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Article
A New Socioeconomic Index for Modelling Land Use and Land Cover Change: A Case Study in Narmada River Basin, India
Yajnaseni Palchoudhuri1
Partha Sarathi Roy2
Vijay K. Srivastava3
AbstractHuman society has been utilising the natural resources from the dawn of its civilisation in varying intensity to improve their living standard. Over the course of time, the extraction of the amenities required for such developmental purpose, affects the resource use pattern and access. This has resulted in a change in the existing land use practices in the region. Thus, socio-economic setting of any region and the land use are interlinked and affect each other. This article presents a new socio-economic index (SEI) to quantify the socio-economic status of any river basin. UNDPs Human Development Index of 1990 has been used and modified to compute the index, in which various aspects of human life are considered and collected from National Survey Samples to reflect on the basins land use scenario. Results of the analysis are presented on Narmada River basin as a case study.
Keywordssocio-economic development, human development index, land use change, human drivers of change, population growth
Journal of Land and Rural Studies3(1) 128
2015 Centre for Rural Studies, LBSNAA
SAGE Publicationssagepub.in/home.nav
DOI: 10.1177/2321024914534051http://lrs.sagepub.com
1 CEPT University, Ahmedabad, India2 UCESS, Hyderabad Central University, Andhra Pradesh, India.3 National Remote Sensing Centre, Hyderabad, Andhra Pradesh, India.
Corresponding author:Yajnaseni Palchoudhuri, CEPT University, Ahmedabad, IndiaE-mail: [email protected], [email protected]
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2 Journal of Land and Rural Studies 3(1)
Introduction
Development deals with improvement of quality of human life and consists of several parameters of the human environment. Some of its major parameters include: economic growth, education, health infrastructure, degree of modernisation, women empowerment, grass root participation in decision making in development level of nutrition, housing quality, distribution of goods and services and access to communication. These parameters are the indicators of the socio-economic development of a region which deals with improving the standard of life. Post-industrialisation, this development along with the rapid population growth has happened unevenly throughout the world. As a result, there is a gradual increase in the unsustainable utilisation of natural resources (Das, 1999).
Land is the major source of Earths natural resources. Human being has evolved themselves to harness these resources very effectively. The rapid depletion of these resources is best reflected in the spatial and temporal variation of land use classes. Thus, the population growth along with the socio-economic development of any region is often identified as the major cause behind its land use dynamics and the environmental change over time. To understand and assess the processes of land use change in developing countries like India, it is crucial to measure the growth in various aspects of socio economy and analyse them with respect to corresponding land use classes. The ISRO-Geosphere Biosphere Programme (IGBP) has undertaken a nationwide land use land-cover dynamics project (since 2007), studying the complex interaction between human and environment on a river basin level. In order to assess the human dimensions of land use change, an attempt is made to generate a robust socio-economic index which can be related with the temporal and spatial land use dynamics of the basin.
A socio-economic index measures the varying parameters of socio-economic development of a region (within any river basin). It identifies the homogeneous (in abstract) social groups that reflect the quality of human life. These parameters can be broadly grouped under the sub-heads of economy, literacy, health and infrastructure. The economy parameter constitutes of all the income based measures and employment source parameters, for example, GDP per capita, Purchasing power parity (PPP), growth of establishments providing employment, percentage of population earning income etc. It has been the key determinant of living standard, defining the extent to which a persons basic needs are met through his ability to consume. The literacy indicator includes factors like literacy rate, Enrolment ratio in the schools or access to education. The health parameters cover the health infrastructure and facilities accessed by the individuals, infant mortality rate and sex ratio. The infrastructural parameter explains the development of the basic facilities needed to sustain human life, for example, the drinking water facilities, access to market and source of employment through road connectivity. All of this information studying the varying aspects of social and economic growth of any region is state-wise collected and organised by the Census and National Survey Samples. It is essential to integrate these socio-economic parameters to generate a robust index in order to understand the status of socio-economic growth and
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Palchoudhuri et al. 3
development of a region. So far, there has been no such positive effort to generate such an index comprising all the aspects of socio economy at a national level. United Nations Development Programs (UNDPs) Human Development Index (HDI), in 1990 is probably the first successful attempt of its kind, classifying the different groups of settlement of the nation according to their human development quotient. As founded by the Pakistani economist Dr Mahbub ul Haq, the Human Development Index has covered almost all aspect of economic, social, cultural, political and emotional well being (Noorbakhsh, 1998). The main components of HDI include a long and healthy life (health parameters), access to education (literacy parameter) and a decent standard of living (income/economy parameter) (HDR, 1990). The calculation of the final human development index value is based on the simple average of these three components. HDI being an aggregate index, it has not provided with the information regarding the contribution or relative importance of its different components. It also does not include the infrastructural indicator of socio-economic growth of a nation, in its calculation. It has not taken into account the development and the availability of the basic amenities like safe drinking water, road construction, access to local market and other household facilities, as an indicator to measure human well being. The availability and access to these basic requirements of living has immense impact on demographic and socio-economic growth of the region, which shapes the land use with time. Since HDI, does not consider the infrastructural parameter of socio-economic development, hence, cannot be used to study and assess the human dimensions of land use change. For a country like India, where the range of socio economic and cultural diversity being extremely high, the HDI value can hardly capture the true essence of growth in human development within the country or a state, that can be used in land use change analysis. These issues of Human development Index have been addressed and modified to generate an integrated socioeconomic index, in order to link the socio-economic growth of a region to its land use change scenario with time.
Human Dimensions of Land Use Change
Most of the land use and land cover changes (modifications and conversions) are triggered by human usage of land (Verburg et al., 1997). The term land use has its origin from the very decision as to how and for what purpose land resources are used by man. Land cover is in a constant state of flux since the time of evolution of Earth. There are certain well defined endogenic and exogenic forces of the Earth and its atmosphere that reforms the features on and within Earths surface and its surroundings at a regular pace. These physical parameters that drive the land cover of any region to change are termed as the direct drivers of change. Thus, the suitability of land for any particular land use/land cover type is foremost, defined by the attributes of physical factors such as soil, climate, topography etc. With the gradual change of these physical factors over time, there has always been a slow but steady change in land cover scenario.
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But with the rise of human civilisation, these direct drivers or natural agents of change are affected indirectly by the human intervention to exploit the natural resources. Thus, the overall land cover change procedure is accelerated. These human interactions of land use change are the indirect drivers of change. They consist of the demographic, economic, socio-cultural and scientific and technological parameters of human dimensions, which alter the direct drivers of change more diffusely (Figure 1).
In recent times, land use and land-cover change is more influenced, as the increasing population needs more space and land to satisfy its demand for food, shelter and energy requirements. In order to meet this demand for better living, humans during the last 50 years have altered and influenced the natural ecosystem to an unprecedented extent (Adamowicz et al., 2005). Different region of the world has responded differently to these needs on the basis of their different socio-cultural and economic structure. The historical development of the region concerned, its cultural and political factors, trade and most importantly the suitability of the land (defined by the natural drivers) have been the major constraints reflected in this competition. This complex interaction among the socio-economic conditions and the suitability of land for the purpose produced the spatial variation of the land use classes.
Furthermore, global demands have always influenced the Economic factors like markets and policies, and have a direct impact on the decision making by land managers through the prices, taxes, subsidies, production and transportation
Relationship between bio-physical, socio-economicdrivers and land use/land cover system
Feed
back
Bio-physicaldrivers
Socio-economicdrivers
Technological change
Operationsequence Feedback
RegionalandglobalchangeBa
ckgr
ound
&
Indi
rect
effe
cts
Globally systemic changeSocialsystems
Landcover
Land usesystem
Landmanagers
Ecologicalsystems
Figure 1: Drivers of Land Use and Land Cover SystemSource: Briassoulis (2008).
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cost, capital flows, investments, trade and technology. The ever increasing market based demands for various land use classes thus lead to an increase of land under market crops and a reduction in subsistence cropland, and intensification of agricultural practices (Lambin et al., 2003). Hence, both rise and decline of a regional population have a large impact on its land use. Many times, land use has changed because of weak policies and institutional enforcement, for example, the widespread illegal logging in Indonesia because of corruption and the devolving of forest management responsibilities to the district level. On the other hand, strong and effective land use policies have resulted in the proper restoration of land. Some of policies that have influenced land use change are state policies to attain self-sufficiency in food, taxation, credits, subsidies; price control in agricultural inputs and outputs; decentralisation; infrastructure support; investments in monitoring natural resources; land consolidation; nationalisation; and international environmental agreements (Lambin et al., 2003). The various sectors of land use change as mentioned earlier are strongly interlinked within the various levels of humanenvironment systems. The human intervention and the natural system of change, follows a vicious cycle, both changing and acting as feedback to change with time.
Socio-economic Driver of Change
Society has utilised the natural resources in many ways in order to improve life for every common man. As the population rises with time, the demand for a better life has increased, magnifying the pressure on natural resources. This has lead to a change in land use practices in the region, for example, increase in built up area, increase in crop land area, change in water bodies, decrease in forest area, barren land and waste land etc. The socio-economic drivers of the land use change are the factors, which drives the change in land use and land cover scenario, at any region over the period of time. These drivers comprise of the different aspects of demography, society, economy, political and institutional factors and processes such as population change, industrial structure and change, technological change, the family, market, various public sector bodies, and the related policies, rules, community organisation and norms.
The main aim of the research lies in the development of an integrated socio-economic entity and to analyse, how the demographic change and socio-economic development of a nation can affect its land use scenario over time. This analysis would help in modelling and projecting future land use changes, enabling the land planners and policy makers for a better land management.
The study was undertaken with following objectives:
l To develop integrated Socio-economic index (SEI) which can act as drivers as land use and land cover change; and
l To determine relationship of socio-economic and demographic drivers with land use dynamics in river basin.
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Study Area
Narmada River Basin
The basin encompasses catchment area of the river Narmada and lies between 20 28 0.97 N to 24 4242.6 N latitude and 68 63.7 E to 81 4616.18 E longitude. It extends over an area of 98,796 Km2. which is nearly 3 per cent of the total geographical area of the country and is home to 21 million people, nearly 80 per cent of whom live in villages. The basin lies in the states of Madhya Pradesh, Chhatisgarh, Gujarat, Maharashtra and Rajasthan. Table 1 gives the number of districts and taluks of each district in each state which falls in Narmada River basin.
Physiographically, the basin can be divided into hilly and plain regions. The hilly regions are forested. The plain regions are located between the hilly tracts and in the lower reaches. This region is fertile thus it is well suited for cultivation. The climate of the basin is humid and tropical. In the cold weather, the mean annual temperature varies from 17.5 to 20C and in the hot weather from 30 to 32.5C. In the upper hilly areas, the annual rainfall is, in general, ranges between 1,400 and 1,650 mm. In the upper plains, the annual rainfall decreases from 1,400 to less than 1,000 mm. In the lower plains the annual rainfall decreases rapidly from 1,000 mm at the eastern and to less than 650 mm representing the most arid part of the Narmada basin.
Agriculture and forest are the main land cover in the basin. The legal forest covers an area of about 32 per cent of the basin while 45 per cent area is under agriculture. Most of the legal forests are highly degraded and the actual dense forest as per Forest Survey of India is about 15 per cent of the basins geographic area. The dense forest is located in the hilly regions of the upper basin dominated by tropical moist tree species. The farmers in the Narmada basin mostly cultivate small plots located on terrains and are traditionally driven by desire to produce for sustenance rather than profit. Table 1 and Figure 2 show the distribution of districts and taluks covered by the basin boundary and the location map of the Narmada basin containing boundary of each district falling within the basin, respectively.
Table 1: Distribution of Taluks in Each District of the State Covered in Narmada River Basin
S. No.Name of the State
Number of Districts in Each State Located in Narmada River Basin
Number of Taluks in Each District in Each State Located
in Narmada River Basin
1 Madhya Pradesh 19 67
2 Chhatisgarh 02 05
3 Gujarat 20 175
4 Maharashtra 07 55
5 Rajasthan 06 29
Total 05 54 331
Source: All India Soil & Landuse Survey (AISLUS) Atlas.
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Fig
ure
2: L
ocat
ion
Map
of t
he N
arm
ada
Riv
er B
asin
Sou
rce:
All
Indi
a So
il &
Lan
duse
Sur
vey
(AIS
LUS)
Atla
s.
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Table 2: Selected Socio Economic Parameters for Narmada River Basin
Human Development Factors (UNDP,1990)
Modified HDI (UNDP)
Socio-economic Factors (Narmada basin) Sources
Income Economy Number of establishments India Statistics website, State Reports pdfs, Census of India website
Number of working population
Education Education Literacy rates (%)
Health Health Medical facilities (number)
Sex Ratio(per 1000 males)
Infrastructure Drinking water facility (population having drinking water)
Road length (km)
Source: Data analysis by authors.
Methodology
United Nations Development Program in 1990 has identified parameters that has defined the socio-economic conditions of a nation and developed indices indicating the human development and assessing the longevity of human life and their survival strategy. Some of these parameters can be classified into (i) long and healthy lifelife expectancy and medical facilities; (ii) knowledgeliteracy; (iii) safe and decent livingdrinking water facility; (iv) gender equalitysex ratio; (v) economynumber of establishment and total number of working population in these establishments and (vi) infrastructureroad and transportation facility.
l Selection of Socio-economic parameters On the basis of the UNDPS Human Development Programme, the effort
has been made to look for those parameters, which explain the three basic aspects of Socio Economy of the basin, that is, income, education and health. Since Narmada River basin covers, parts of five different states, as a result the economy within the basin will vary widely.
The selection criterion has been decided on the basis of the level of analysis, the availability of data at that scale of analysis uniform for all states within the basin, and the optimum significance of the selected ones with respect to the context.
In view of the earlier said criterion, the various socio-economic parameters of Narmada River basin has been selected which are as follows (Table 2):
Selected parameters for Narmada SEI: Health facility: District-wise health facility collected including the number
of hospitals, dispensaries, community health centres and primary health centres;
Literacy rate: District-wise number of literates in percentage was recorded;
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Drinking water facility: District-wise number of population benefited by drinking water facilities and measured with respect to number of population for the 3 time frames;
Sex ratio: District-wise ratio of number of female population per thousand male populations was recorded for the 3 time frames;
Number of establishments: Recorded district-wise number of both agricultural and non-agricultural establishments that provide employment to the inhabitants of the region;
Working population: District-wise number of population employed in the above mentioned establishments; and
Road: Road connectivity is an important aspect of development as it connects the villages to taluks to districts head quarters to different taluks and district, enabling local populations to move from one place to other for their needs. District wise total road length was recorded for the period of the present study.
Data for all 5 states, within the Narmada River basin, have been collected from different sources at district level to ensure a greater variability of socio economy prevailing there.
l Development of An Integrated Socio-Economic index (SEI) for the basin at district level
The selected parameters for socio-economic development of Narmada River basin at district level have been collected from various earlier mentioned Government sources for three census years of 1981, 1991 and 2001 at an interval of 10 years.
The following procedure has been followed for computing an integrated socio-economic index for the basin at the district level of analysis:
Calculation of the selected parameters for the year 1985, 1995 and 2005, on the basis of the collected input data for the census years of 1981,1991 and 2001 using linear progression.
Organisation of the three time frame data (1985, 1995 and 2005) for all the five states covering Narmada basin in tabular format.
Calculation of SUB INDEX for each socio-economic parameter using the formula:
Sub-index (For any parameter) = (Actual valueMinimum value)/(Maximum valueMinimum value)
Where, Minimum value = 0 Maximum value = Maximum value of the parameter within the set of
districts located within a river basin. Actual value = the value that correspond to a particular district. Calculation of Socio-Economic Index (SEI) from the SUB INDICES
values of the selected parameters, using the linear integration approach:
SEI = ([{(SI-1*a-1)} + {(SI-2* a-2)} + {(SI-7 * a-7)}]/ (sum of the weights))*100
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Where, SI-1 to SI-7 = Sub index (1 to 7), a -1 to a -7 = Weightage of each parameter derived from the correlation analysis amongst the parameters as shown in Table 3.
l Organising SEI for three time period in Narmada River basin at taluk level
The organised district level socio-economic data for Narmada River basin (Table 4) is appended to the district boundary of the basin for its spatial representation, using the join function in arcmap. Figures 3 and 4 illustrate the visual representation of the output district-wise SEI map in thematic and vector format, respectively.
Conversion of the vector layer of Narmada district having three time appended SEI values from polygon to point feature data, using polygon to point conversion in arcmap as shown in Figure 5.
Using the Spatial Interpolation technique, TIN in Arcmap, the district-wise socio-economic data are converted into raster format, separately for each year.
The output raster TIN (Figure 6) is further analysed for the spatial redistribution of SEI data at taluk level of analysis, using the Narmada taluk Boundary.
The Output raster SEI (Figure 7) for three time period is used as an input raster, of the SEI value source, in the zonal statistics table computation, where a zone represent one taluk in the basin. The zonal statistic table has been used to extract the mean value for SEI, within a taluk area (zone) and append the same with the taluk boundary layer, on the basis of taluk name as shown in Figure 8.
l Organisation of Population Data at taluk level of analysis Taluk-wise population data are collected at each Census year of 1981, 1991
and 2001 from the Census of India website and has been used as the base data for the calculation of population data of 1985, 1995 and 2005, using the following exponential formula of growth (Census of India):
Input data: Population of 1981, 1991 and 2001, Population Decadal Growth Rate (19811991, 19912001 and
20012011 Formula: (for example) Population of 1982 = Population of 1981* log(e) {power(Growth
rate 19811991/year)} Population of 1983 = Population of 1982 * log(e) {power(Growth
rate 19811991/year)} Population of 1985 = Population of 1984* log(e) {power(Growth
rate 19811991/year)} [where log(e) has a constant value of 2.17828]
In a similar procedure, population for 1995 and 2005 is also calculated from population 1991 and 2001 and their respective growth rates. Table 5 shows the
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Tab
le 3
: Cal
cula
tion
of W
eigh
tage
for
the
Nar
mad
a So
cio-
econ
omic
Par
amet
ers-
2005
Esta
blis
hmen
tW
okin
g Po
pula
tion
Lite
racy
R
ate
Hea
lth
Faci
lity
Sex
Rat
ioD
rink
ing
Wat
er F
acili
tyR
oad
Leng
th
Esta
blis
hmen
t1
Wok
ing
popu
latio
n0.
941
Lite
racy
rat
e0.
340.
291
Hea
lth fa
cilit
y0.
340.
380.
191
Sex
ratio
0.56
0.60
0.40
0.10
1
Dri
nkin
g w
ater
faci
lity
0.80
0.86
0.29
0.63
0.52
1
Roa
d le
ngth
0.40
0.39
0.18
0.58
0.14
0.68
1
Tot
al3.
392.
511.
061.
310.
670.
681
10.6
2
Wei
ghta
ge0.
320.
240.
100.
120.
060.
060.
094
Sou
rce:
Dat
a an
alys
is b
y au
thor
s.
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Tab
le 4
: Com
puta
tion
of S
EI fo
r N
arm
ada
Riv
er B
asin
in 2
005
DIS
T_1
Tot
al
Esta
blis
hmen
t (N
umbe
r)
Fina
l Su
b In
dex
(1)
Tot
al
Wor
king
Pe
rson
s (N
umbe
r)
Fina
l Su
b In
dex
(2)
Lite
racy
R
ate
(%)
Fina
l Su
b In
dex
(3)
Tot
al
Hea
lth
Faci
lity
(Num
ber)
Fina
l Su
b In
dex
(4)
SEX
R
atio
(p
er
1000
)
Fina
l Su
b In
dex
(5)
Popu
latio
n H
avin
g Fa
cilit
y of
Wat
er
(Num
ber)
Fina
l Su
b In
dex
(6)
Leng
th
of R
oads
(k
ms)
Fina
l Su
b In
dex
(7)
SEI_
20
05
(%)
Ahm
adab
ad
3700
08.0
01.
00
9951
99.0
0 1.
00
81.8
40.
92
331.
00
0.48
89
0.00
0.
86
5473
085.
03
1.00
39
42.0
0 0.
29
85.1
4 Su
rat
2939
77.0
0 0.
79
8917
18.0
0 0.
90
79.2
5 0.
89
696.
00
1.00
80
8.60
0.
78
5229
625.
58
0.96
43
13.0
0 0.
32
81.7
6 N
ashi
k 14
3645
.00
0.39
44
8245
.00
0.45
80
.22
0.91
66
1.00
0.
95
922.
80
0.89
50
1651
8.81
0.
92
1363
5.00
1.
00
64.6
5 V
adod
ara
1800
21.0
00.
49
4430
19.0
0 0.
45
74.4
0 0.
84
557.
00
0.80
92
1.40
0.
89
3746
203.
87
0.68
41
80.0
0 0.
31
57.1
5 Sa
bar
Kan
tha
2196
72.0
0 0.
59
3609
92.0
0 0.
36
70.6
1 0.
80
493.
00
0.71
93
9.80
0.
91
2159
375.
38
0.39
44
43.0
0 0.
33
55.5
0 R
ajko
t 19
7320
.00
0.53
37
6747
.00
0.38
77
.80
0.88
39
0.00
0.
56
923.
60
0.89
30
5328
4.79
0.
56
4349
.00
0.32
53
.82
Mah
esan
a 21
4720
.00
0.58
41
2971
.00
0.41
78
.39
0.88
30
5.00
0.
44
917.
40
0.89
18
9938
5.69
0.35
22
26.0
0 0.
16
51.9
0 K
heda
21
6611
.00
0.59
35
7350
.00
0.36
76
.61
0.86
35
4.00
0.
51
922.
60
0.89
20
8297
3.06
0.
38
2497
.00
0.18
51
.84
Jalg
aon
1231
45.0
0 0.
33
2285
89.0
0 0.
23
80.7
6 0.
91
493.
00
0.71
93
1.60
0.
90
3701
033.
110.
68
9705
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0.71
50
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Bhav
naga
r 12
7659
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0.35
32
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0.33
74
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0.85
41
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60
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20
0.90
23
0571
7.12
0.
42
4233
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0.31
45
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Bana
s K
anth
a 14
2843
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0.39
26
0564
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0.26
55
.60
0.63
49
9.00
0.
72
928.
40
0.90
25
2878
9.34
0.
46
4283
.00
0.31
45
.16
Juna
gadh
12
7422
.00
0.34
23
6222
.00
0.24
71
.77
0.81
45
8.00
0.
66
953.
00
0.92
24
3372
7.07
0.
44
3734
.00
0.27
44
.02
Am
rava
ti 11
0881
.00
0.30
16
3445
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0.16
88
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0.99
38
8.00
0.
56
940.
80
0.91
26
2100
3.58
0.
48
6222
.00
0.46
43
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Jam
naga
r 11
2638
.00
0.30
29
3678
.00
0.30
70
.22
0.79
31
2.00
0.
45
937.
80
0.91
18
2587
5.20
0.
33
3530
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0.26
40
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Indo
re
1192
96.0
0 0.
32
3311
84.0
0 0.
33
78.2
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88
140.
00
0.20
91
4.40
0.
89
2717
344.
23
0.50
14
72.6
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11
39.2
1 Ja
balp
ur
9787
3.00
0.
26
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91.0
0 0.
33
80.8
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91
214.
00
0.31
91
0.00
0.
88
2173
968.
10
0.40
16
12.2
0 0.
12
38.3
7 Bu
ldan
a 72
877.
00
0.20
10
5930
.00
0.11
81
.91
0.92
32
4.00
0.
47
946.
00
0.92
22
3909
1.56
0.41
41
97.0
0 0.
31
35.0
5 Su
rend
rana
gar
9418
3.00
0.
25
1949
96.0
0 0.
20
64.8
9 0.
73
238.
00
0.34
92
5.20
0.
90
1537
676.
330.
28
3511
.00
0.26
34
.14
Bhar
uch
9404
8.00
0.
25
1868
53.0
0 0.
19
78.2
9 0.
88
204.
00
0.29
91
9.40
0.
89
1391
599.
49
0.25
27
38.0
0 0.
20
34.1
1 G
andh
inag
ar
9363
4.00
0.
25
2161
30.0
0 0.
22
77.7
1 0.
88
205.
00
0.29
90
3.20
0.
87
1375
094.
75
0.25
19
70.0
0 0.
14
34.0
7 Pa
nch
Mah
als
6592
3.00
0.
18
1052
72.0
0 0.
11
66.2
5 0.
75
478.
00
0.69
93
9.60
0.
91
2094
037.
40
0.38
22
74.0
0 0.
17
33.8
5 S
ourc
e: D
ata
anal
ysis
by
auth
ors.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Fig
ure
3: D
istr
ict-
wis
e So
cio-
econ
omic
Cla
sses
(20
05)
Sou
rce:
Dat
a an
alys
is b
y au
thor
s.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Fig
ure
4: D
istr
ict-
wis
e Sp
atia
l Dis
trib
utio
n of
SEI
(19
85, 1
995
and
2005
)
Sou
rce:
Dat
a an
alys
is b
y au
thor
s.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Fig
ure
5: S
EI a
s Po
int
Laye
r (1
985,
199
5 an
d 20
05)
Sou
rce:
Dat
a an
alys
is b
y au
thor
s.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
16 Journal of Land and Rural Studies 3(1)
calculation and organisation of taluk-wise population data within the basin as part of the analysis. The output population data is then attached to the spatial database of taluk boundary and rasterised to generate the population thematic raster of 1985, 1995 and 2005 (Figure 9).
l Correlation of socio-economic and demographic drivers with land use categories of the basin for three time period.
In order to analyse the relation between the human drivers and land use dynamics, it is required to organise the temporal changes in both the land use categories and the drivers database on the same level, so as to identify the sequences of changes. For the purpose, the land use changes for all categories are incorporated in the taluk layer along with its respective driver database, for all three time periods separately, so that we can get the distribution of change in various land use categories along with their driver values in each taluk.
In Arcmap, Union function has been used to bring the land use data at the same base with the driver data, so that, the change in the land use area for a particular class with respect to the change in the driver data for a particular taluk can be well recognised (Figure 10).
Impact of the drivers on the land use categories can be assessed with the help of Correlation Matrix, which is built on the land use database for three years separately (Table 6). A correlation Matrix is an array of row and column, having the correlation values, which depicts the strength of relation among different variables of land use categories and its drivers. A correlation value (denoted by r) ranges from 1 to +1. A high value of r whether positive or negative, shows a higher dependency among two variables, which means with a slight change in the first variable, there will be a significant change in the second one and vice versa. On the other hand, when the value of r will be more near to the zero, it depicts a lower strength of relation between the two variables. The sign of r indicates the direction of relationship; + means that with the increase in independent variable, the dependent variable increases; means that with increase in independent variable, the dependent variable decreases.
Figure 6: SEI as TIN (2005)Source: Data analysis by authors.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Palchoudhuri et al. 17
Figure 7: SEI Raster (1985, 1995, and 2005)Source: Data analysis by authors.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Fig
ure
8: S
patia
l Rep
rese
ntat
ion
of T
aluk
-wis
e SE
I Dat
a (1
985,
199
5, a
nd 2
005)
Sou
rce:
Dat
a an
alys
is b
y au
thor
s.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
(Tab
le 5
Con
tinue
d)
Tab
le 5
: Org
anis
atio
n of
Tal
uk-w
ise
Popu
latio
n (1
985,
199
5, a
nd 2
005)
in N
arm
ada
Riv
er B
asin
TA
LUK
PO
P_81
PO
P_
1991
PO
P_
2001
A
rea
19
81
Gro
wth
ra
te
(91
2001
)
Gro
wth
ra
te
(81
91)
Gro
wth
ra
te
(01
06)
Gro
wth
ra
te
per
yr
(200
191
)
Gro
wth
ra
te
per
yr
(91
81)
Gro
wth
ra
te
per
yr
(200
120
06)
Log(
e)
Pop
20
05
Log(
e)
Pop
1995
Lo
g(e)
Po
p 19
85
Ahm
adab
ad
City
25
3092
0 32
8069
2 42
2004
8 60
0 26
.61
24.2
5 16
0.
0266
1 0.
0242
5 0.
016
1.01
2534
44
3564
4 1.
0209
33
3564
136
1.01
9059
27
2945
2
Dah
egam
18
3633
21
4321
25
0253
62
0.2
26.6
1 24
.25
16
0.02
661
0.02
425
0.01
6 1.
0125
34
2630
38 1
.020
933
2328
37.8
1.
0190
59 1
9803
7.6
Das
kroi
27
8107
30
8214
45
9183
69
8.4
26.6
1 24
.25
16
0.02
661
0.02
425
0.01
6 1.
0125
34
4826
42 1
.020
933
3348
43
1019
059
2999
22.4
Dha
ndhu
ka
2137
48
2521
83
4346
62 2
682.
9 26
.61
24.2
5 16
0.
0266
1 0.
0242
5 0.
016
1.01
2534
45
6868
.2 1
.020
933
2739
711.
0190
59 2
3051
4.9
Dho
lka
2610
92
3073
43
2148
36 1
692.
1 26
.61
24.2
5 16
0.
0266
1 0.
0242
5 0.
016
1.01
2534
22
5811
.6 1
.020
933
3338
96.7
1.
0190
59 2
8157
2.7
Sana
nd
1373
46
1615
25
1933
35
790.
7 26
.61
24.2
5 16
0.
0266
1 0.
0242
5 0.
016
1.01
2534
20
3212
.2 1
.020
933
1754
80.4
1.
0190
59 1
4811
9.8
Vir
amga
m
2709
48
2775
34
1724
00 1
714.
1 26
.61
24.2
5 16
0.
0266
1 0.
0242
5 0.
016
1.01
2534
18
1207
.7 1
.020
933
3015
12.3
1.
0190
59 2
9220
1.9
Am
reli
1762
33
1982
32
2175
01
838.
5 6.
45
14.9
7 16
0.
0064
5 0.
0149
7 0.
016
1.01
2534
22
8612
.8 1
.005
034
2022
54
1.01
1723
184
643.
3
Babr
a 91
911
1078
09
1229
83
793.
1 6.
45
14.9
7 16
0.
0064
5 0.
0149
7 0.
016
1.01
2534
12
9266
1.0
0503
4 10
9996
.4
1.01
1723
962
97.2
2
Dha
ri M
ahal
12
6581
14
4232
13
6253
109
22
6.45
14
.97
16
0.00
645
0.01
497
0.01
6 1.
0125
34
1432
14 1
.005
034
1471
58.4
1.
0117
23 1
3262
1.8
Jafa
raba
d M
ahal
59
153
7364
1 90
732
355.
6 6.
45
14.9
7 16
0.
0064
5 0.
0149
7 0.
016
1.01
2534
95
367.
36 1
.005
034
7513
5.12
1.
0117
23 6
1975
.93
Kha
mbh
a M
ahal
46
556
5304
5 84
529
407.
5 6.
45
14.9
7 16
0.
0064
5 0.
0149
7 0.
016
1.01
2534
88
847.
46 1
.005
034
5412
1.25
1.
0117
23 4
8777
.77
Kod
inar
13
8970
16
5795
19
8181
53
6.8
6.45
14
.97
16
0.00
645
0.01
497
0.01
6 1.
0125
34
2083
05.8
1.0
0503
4 16
9158
.9
1.01
1723
14
5602
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
(Tab
le 5
Con
tinue
d)
TA
LUK
PO
P_81
PO
P_
1991
PO
P_
2001
A
rea
19
81
Gro
wth
ra
te
(91
2001
)
Gro
wth
ra
te
(81
91)
Gro
wth
ra
te
(01
06)
Gro
wth
ra
te
per
yr
(200
191
)
Gro
wth
ra
te
per
yr
(91
81)
Gro
wth
ra
te
per
yr
(200
120
06)
Log(
e)
Pop
20
05
Log(
e)
Pop
1995
Lo
g(e)
Po
p 19
85
Kun
kava
wa
Dia
15
3092
14
8538
15
7770
83
9.2
6.45
14
97
16
0.00
645
0.01
497
0.01
6 1.
0125
34
1658
30.2
1.0
0503
4 15
1551
.7
1.01
1723
160
397.
9
Lath
i D
amna
gar
1004
87
1193
04
1321
39
632.
8 6.
45
14.9
7 16
0.
0064
5 0.
0149
7 0.
016
1.01
2534
13
8889
.8 1
.005
034
1217
24.6
1.
0117
23 1
0528
2.5
Lilia
Mah
al
5384
6 62
646
6072
2 39
5 6.
45
14.9
7 16
0.
0064
5 0.
0149
7 0.
016
1.01
2534
63
824.
19 1
.005
034
6391
7.04
1.
0117
23 5
6415
.66
Raj
ula
1322
68
1601
77
1456
28
850
6.45
14
.97
16
0.00
645
0.01
497
0.01
6 1.
0125
34
1530
67.9
1.0
0503
4 16
3426
.9
1.01
1723
138
580.
2
Dan
ta
1018
45
1314
76
1733
66
860.
4 26
.31
30.8
7 16
0.
0263
1 0.
0308
7 0.
016
1.01
2534
18
2223
1.0
2069
4 14
2701
.8
1.02
4325
112
121.
8
Dha
nera
14
2288
19
1633
18
1174
118
8.5
26.3
1 30
.87
16
0.02
631
0.03
087
0.01
6 1.
0125
34
1904
29.9
1.0
2069
4 20
7995
.2
1.02
4325
156
645.
7
Dis
a 26
0532
35
2040
45
8303
148
1.5
26.3
1 30
.87
16
0.02
631
0.03
087
0.01
6 1.
0125
34
4817
17 1
.020
694
3820
98.3
1.
0243
25 2
8682
1.3
Diy
odar
14
5075
19
0077
14
6393
101
1.5
26.3
1 30
.87
16
0.02
631
0.03
087
0.01
6 1.
0125
34
1538
72 1
.020
694
2063
06.4
1.
0243
25
1597
14
Kan
krej
23
875
1463
72
1853
52
795.
5 26
.31
30.8
7 16
0.
0263
1 0.
0308
7 0.
016
1.01
2534
19
4821
.4 1
.020
694
1588
69.7
1.
0243
25 2
6284
.13
Pala
npur
30
7683
39
7437
38
0707
147
3.1
26.3
1 30
.87
16
0.02
631
0.03
087
0.01
6 1.
0125
34
4001
56.7
1.0
2069
4 43
1371
.4
1.02
4325
338
730.
1
Rad
hanp
ur
8117
4 94
669
1201
77
595.
7 26
.31
30.8
7 16
0.
0263
1 0.
0308
7 0.
016
1.01
2534
12
6316
.7 1
.020
694
1027
52.1
1.02
4325
893
64.9
5
Sou
rce:
Dat
a an
alys
is b
y au
thor
s.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Palchoudhuri et al. 21
Figure 9: Population Raster (1985, 1995, and 2005)Source: Data analysis by authors.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Fig
ure
10: U
nion
of L
ULC
with
Dri
ver
Dat
abas
e (2
005)
Sou
rce:
Dat
a an
alys
is b
y au
thor
s.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Palchoudhuri et al. 23
Result and Discussion
For Narmada River basin, the significant socio-economic factors are the economic factors and the drinking water facilities, followed by the health facilities and the road connectivity, as shown in Table 3. The correlation values have validated the authentication of the socio-economic model, chosen for the computation of socio-economic index for the basin.
Table 6: Correlation Analysis between Land Use Classes and Corresponding Driver Database (1985, 1995, and 2005)
2005 Forest
(1) Sp. Veg
(2) Water Body(3)
Built Up (4) Cropland(S)
Waste Land(6)
Fallow Land(7)
rain05 0.215 0.036 0.127 0.002 0.103 0.114 0.028
temp05 0.367 0.038 0.078 0.055 0.117 0.052 0.023
ele 0.520 0.120 0.136 0.105 0.080 0.129 0.159
slope% 0.505 0.290 0.091 0.137 0.227 0.071 0.012
sd 0.192 0.183 0.149 0.092 0.173 0.067 0.059
pop05 0.065 0.073 0.010 0.837 0.194 0.042 0.097
sei05 0.277 0.223 0.047 0.094 0.010 0.009 0.022
drainge05 0.527 0.233 0.590 0.056 0.556 0.352 0.423
1995
rain95 0.327 0.009 0.202 0.063 0.144 0.210 0.151
temp95 0.388 0.017 0.119 0.092 0.243 0.113 0.138
ele 0.515 0.039 0.196 0.136 0.242 0.161 0.130
slope% 0.506 0.213 0.112 0.149 0.037 0.106 0.248
sd 0.197 0.061 0.194 0.107 0.014 0.051 0.194
pop95 0.073 0.022 0.020 0.883 0.196 0.047 0.066
sei95 0.185 0.127 0.026 0.132 0.119 0.004 0.195
drng95 0.437 0.141 0.079 0.019 0.454 0.081 0.175
1985
rain85 0.296 0.035 0.159 0.034 0.216 0.273 0.252
temp85 0.334 0.003 0.074 0.089 0.310 0.109 0.173
ele 0.497 0.093 0.197 0.131 0.295 0.178 0.229
slope% 0.522 0.142 0.116 0.141 0.072 0.093 0.250
sd 0.217 0.050 0.172 0.111 0.123 0.084 0.055
pop85 0.078 0.080 0.033 0.824 0.251 0.078 0.087
sei85 0.034 0.038 0.046 0.073 0.036 0.099 0.041
drng85 0.320 0.028 0.028 0.019 0.402 0.020 0.343
Source: Data analysis by authors.
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
24 Journal of Land and Rural Studies 3(1)
According to the output socio-economic index map of Narmada basin, the highest index value within the basin is found in the regions of Ahmadabad and Surat of Gujarat and Nasik of Maharashtra and the lowest socio economy is found in the Dangs district of Gujarat, because of the existing tribal community (Figure 11).
Similar to the socio-economic factors, the demographic factor has also followed the same trend of change over time, as evaluated from the population data. The highest value for total population per district of the Narmada basin is found in the Ahmadabad and Nasik district of Gujarat and Maharashtra and the Dangs being the lowest, as shown in Figure 12.
Since land resources have been used for human benefit since ages, population and socio-economic growth of a human community have strong impact on the land use dynamics. With increased population, there would be the demand for more land for agriculture or looking for fuel wood or timber. Larger numbers of
Figure 11: Graphical Representation of District-wise Socio-economic Index of Narmada River Basin, 2005.
Source: Data analysis by authors.
Figure 12: Graphical Representation of District-wise Total Population of Narmada River Basin, 2005.
Source: Data analysis by authors.
0102030405060708090
SEI 2005 (%)
Rajna
ndgao
n
Bana
s Kan
tha
Sabar
Kanth
a
Ahma
daba
dRa
jkot
Porba
ndar
Amrel
i
Khed
a
Vado
daraSu
ratVa
lsad
Ratla
mJha
bua
Indor
e
East-
Nima
r
Raise
nHa
rda
Jabalp
ur
Mand
laSe
oni
Nand
urbar
Jalgao
nAk
ola
Nashi
kSir
ohi
Dung
arpur
Chitta
urgarh
TOTAL POPULATION 2005
01000000200000030000004000000500000060000007000000
Rajna
ndan
gaon
Bana
s Kan
tha
Saba
r Kan
tha
Ahmad
abad
Rajko
t
Porban
dar
Amreli
Khed
a
Vado
daraSu
rat
Valsa
d
Ratla
mJha
bua
Indor
e
East-
Nim
ar
Raise
n
Harda
Jabalp
ur
Man
dlaSe
oni
Nan
durbar
Jalgaon
Akola
Nashik
Siroh
i
Dung
arpu
r
Chittau
rgarh
at Dehli University Library System on July 18, 2015lrs.sagepub.comDownloaded from
Palchoudhuri et al. 25
people would also ensure that more labourers would be available, forcing wages down and making activities that need labour, such as agriculture, more profitable. An effect in the same direction may occur if the demand for agricultural products expands because of the growing number of people who need to be fed (Contreras-Hermosella, 2000; Panayotou, 1995). In the Table 6, the relation between various drivers (both human and physical) with the land use categories prevailing over Narmada basin, at a scale of 250,000, has been shown. Looking to its history of economy, over a period of 20 years, Narmada basin has grown as a prominent agricultural economy. This is because of development of extensive irrigation facilities induced by the Narmada River dam. Thus, the major changes in land use classes that have taken place from 1985 to 2005, is mainly found in crop land, built up area and forested areas. As evident from the Table 6, the highlighted values refer to those drivers which are having a significant level of impact on the corresponding land use category. The level of significance depends on the level of analysis of the concerned data which in case of Narmada were 331 (number of taluks) and the spatial scale of data analysis were 250,000 scale. Depending on the level of analysis, which is referred to as unit of freedom, the threshold of correlation significance is determined. According to this threshold, the values of correlation coefficient (r) are highlighted in the table, which represent the significant drivers for a class in a particular year. The land use change measurement depends on the spatial scale of analysis, thus higher the spatial scale, larger the areas of land use change can be detected and measured. Since the scale of analysis considered for Narmada basin is at 2,50,000 for its whole areal coverage, thus the correlation values (Table 6), the drivers are having with the land use change though significant but are not very high (for example, the relation SEI is having with the land use classes in 1995 and 2005).
It is also evident from the table, that there is a difference in the drivers of change for a particular class from year to year. For example, the socio-economic driver is an important agent of change for some of the classes in 1995 and 2005, but in 1985, it has no impact on the land use change for any class. Similarly, the population growth is affecting the classes like settlement and cropland the most rather than any other land use class. The most affected land use categories like the forest, built up and agriculture have been largely impacted by the human drivers of population, socio economy and drainage parameters (including both natural and canal drainage), especially after the construction of Narmada dam on the river. The Narmada River dam, has developed the irrigational facilities, leading to an increase in crop area, and has ensured the availability of drinking water facilities, to the remote areas. It has become the source of employment, for the power plant set ups, thus improving the socio economy of the basin. Henceforth, in a period of 20 years, the socio economy condition of the basin has improved due to the various social and economic developmental aspects, along with a steady rise in population, which has acted as a feedback in changing the land use scenarios, for the betterment of human life.
Following the data analysis, it can be said that humans and their ever increasing needs, has a significant relation with the land cover change over time. This is where, it brings the term land use, which means, human utilisation of land. It
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26 Journal of Land and Rural Studies 3(1)
is quiet tough to assess the land use change over time and predict for the future, without considering the human drivers as the agent of land use change. Land use change hence, is associated with population growth, global market enhancement, technological innovation and rural developmental policy. Opportunities and constraints for new land uses are thus created by markets and policies. Land cover changes are mostly driven by the peoples response to these opportunities and constraints (Lambin et al., 2003). Sometimes, the population growth also induces certain technological progress and institutional changes that contribute to reduced pressures on forests. It may result in agricultural intensification by increasing the soil fertility using various agricultural techniques instead of agricultural areal expansion. In response to the global market, there is also a gradual shift to cash crops on the existing fields and an expansion of agriculture into more fragile, marginal areas. At more local levels, population density is determined by road connectivity, soil fertility, employment opportunities, infrastructural availability and access to markets. Several studies show that population growth in any forested and sparsely populated areas occurs in response to road construction, available high-quality soils, and growing demand for agricultural products (Angelsen and Kaimowitz, 1999). This implies that these factors inevitably lead to an increase in population and constantly modifying the land use and land cover scenarios of the region in response to their needs.
In social science studies, the variables are always correlated and interdependent. Thus, in order to derive a composite index of socio-economic parameters using any statistical technique, special care is to be taken on the nature of analysis, availability of the data and objective and scale of analysis. A nations development in terms of social and economic growth can be categorised in broad sectors of health, economy and communication. The growth in each sector further depends on several correlated variables. For a large scale analysis of regional socio-economic growth of each sector, it is essential to identify the key variables, accountable for most of the variations in the socio-economic patterns of the region (Adhikari, 2006). Since the scale of analysis in Narmada basin case study is as small as 250,000, thus contributions of the variables are considered with respect to their weightage they are having on the socio-economic condition of the basin. The Australian Bureau of Statistics in their Socio-Economic Index for Areas (SEIFA) has identified the Principal Component Analysis as an important technique of dimension reduction. It has enabled them to summarise the whole set of inter-dependent variables in each sector into a manageable form without much loss of original information. Their main objective was to find a few set of key variables which can account for most of the variation in the growth of a particular socio-economic sector. This technique of dimension reduction is significantly important in the large scale evaluation of socio-economic growth at any local or regional level. Depending upon the purpose of summarising variables and how the variables group together, one or more of the principal components are used to create the final index (Adhikari, 2006). On the other hand, the New Zealand SEI depends more on the concept of Return to Human Capital model of social stratification (Davis et al., 1997). It follows a fundamental relationship between cultural resources (education) and access
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Palchoudhuri et al. 27
to material reward (income) and this relation is mediated through occupational structure. The NZSEI, identified three variables of age, income and education to derive a value for occupational socio-economic status. Each value of the status is an optimally weighed combination of income and education corrected for age based on the assumption of the model.
The main purpose of this research work was to derive a relationship between the land use change of any region and its socio-economic growth represented by socio-economic index values. The socio-economic growth of any region depends largely on the overall development of human life, expanding human capabilities and enlarging their choices to live full and creative lives (Fukuda-Parr, 2003). The people are the beneficiaries of such a development and the courses of the change that it brings on the land cover to make it more resourceful for their use. Thus, in order to assess the socio-economic growth of the river basin in true sense and to analyse how it affects its land use land cover scenario with time, UNDPs Human Development Index is considered as a mean to derive the socio-economic index for the Narmada basin. With the use of four basic sectors of development, that is, economy, health, education and infrastructure, the index is computed, the value of which relates well to the corresponding land use scenario of the region. This type of socio-economic Index suits best for the small scale study of overall social and economic development of a river basin affecting the land use dynamics of the region. The major sensitivity of such indices lies in the arbitrariness and unavailability of the data records as well as the uncertainty of the fact which variable is more crucial for the growth of a particular sector of socio economy.
Conclusion
In this article we presented a study on land use dynamics in relation to the impact of selected socio-economic conditions and demographic conditions prevailing in the Narmada River basin.
In general, development can be viewed as a multi-dimensional phenomenon, which defines the existing land use scenarios over the region. Here in this study, a composite index of development is constructed in the name of socio-economic index using four broadly accepted components: (i) economic production and economic condition or in other words level of economic development; (ii) basic needs to survive; (iii) health and health-related services and (iv) communication.
The values of the index support the general socio-economic conditions prevailing over the concerned states covering the basin. The factors, which are found out to be more important for the overall development process in Narmada, relate to basic needs like education, employment opportunities and facilities like safe drinking water, Health care infrastructure, etc. Temporal development in the socio-economic status along with population growth has a direct impact on the change of land use classes like agriculture, forestry and human settlement, as it is evident from the correlation analysis. Thus, it can be concluded that to assess the dynamicity of land use classes over time and to predict them for future, its
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essential to consider the human drivers along with the physical ones and organise them according to the scale of analysis, in order to select the significant agent of change for a particular land use class.
AcknowledgementsThe present study as been carried out as part of ISRO Geosphere Biosphere Programme (IGBP) on land- use/land cover dynamics in Indian river basins and impact of human drivers thereof.
The authors are thankful to Director, IIRS for all necessary support and to Dr Kanchan Chopra for reviewing the article and providing valuable suggestions.
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