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STUDY OF THE ECOLOGICAL STUDY OF THE ECOLOGICAL IMPACT OF SEWAGE IMPACT OF SEWAGE
IRRIGATED VEGETABLE IRRIGATED VEGETABLE FARMING and sewage fed FARMING and sewage fed aquaculture OF CALCUTTA aquaculture OF CALCUTTA
METROPOLIS USING REMOTE METROPOLIS USING REMOTE SENSING & SENSING & GISGIS
Site No. 1208 West Bengal, India
Ramsar Dr. Nitai KunduSr. Scientist, Institute of Environmental Studies & Wetland Management& Chief Technical Officer, East Kolkata Wetlands Management AuthorityB 4, LA Block, Salt Lake, Sector –III, Kolkata – 700098, India.
INDIAWEST BENGAL
EKW
LOCATION OF EAST KOLKATA WETLANDS
EAST KOLKATA WETLANDS (EKW)
Pisciculture , Agriculture, Vegetable Farming
Using Urban Sewage & Solid Waste
OBJECTIVES
•Creating a spatial database of sewage flow and distribution pattern in the East Kolkata Wetlands in GIS Environment using space borne data and collateral data.
•Monitoring the change in the sewage distribution pattern over the time period, crop growth status in the sewage fed farms and condition of sewage fed fishery ponds using ALOS AVINIR-II data.
•Stimulating long term sustainability of sewage water irrigation with respect to crop and soil.
•Comparative study of Landuse using PAN and LISS III merged data and AVINIR –II data.
CANAL NETWORK OF EKW
PARAN CHAPRASI KHAL
GHOSHER KHAL
DEARA KHAL
BIDYADHARI
BOYNALA KHAL
Sc. City Crossing
KESTOPUR KHAL
EKW BOUNDARY
NalbanNalban
FFC
Ghosher Khal
Paran Chaprasi Khal
Nerinir Khal
Nodor
Deara
Lalkuthi
Kheyadaha
Baidyadhari Part
Kachagheri-Jhaukhali
Sumidgiri
Boynala
Parallel DWF
Bidyadhari
TP-Bajbarantala Link
Kharki-Belekhali
EAST KOLKATA WETLAND CANAL CATCHMENT AREA
• Water Spread in the sewage fed ponds and other ponds are identified.
• Water catchment areas are identified, specially along the canals.
• Plot level boundaries are overlaid on the mouza maps.
• Plot level landuse classes are identified on IKONOS 1mt x 1mt resolution maps.
• PAN LISS III merged data has the resolution of 5.8mt x 5.8mt whereas AVINIR II data has the resolution of 10mt x 10mt.
AGRICULTUREWATERBODYSETTLEMENTPRODUCTIVE FARMINGAGRICULTURE- WATERBODYAGRICULTURE- SETTLEMENTWATERBODY- SETTLEMENTWATERBODY- PRODUCTIVE FARMINGSETTLEMENT - PRODUCTIVE FARMINGAGRICULTURE- WATERBODY-SETTLEMENT
LEGEND
PLOTWISE INFORMATION
Existing land use pattern of East Kolkata Wetland
WaterbodyWaterbody 5,852 ha (fish 5,852 ha (fish farming farming 3,898.70ha)3,898.70ha)--46.82%46.82%
Agriculture LandAgriculture Land 4,718.56ha4,718.56ha--37.75%37.75%
Garbage Disposal Garbage Disposal sitesite
602.78ha602.78ha--4.82%4.82%
Urban Settlement Urban Settlement AreaArea
91.53ha91.53ha--0.73%0.73%
Rural Settlement Rural Settlement AreaArea
1234.99ha1234.99ha--9.88%9.88%
Total AreaTotal Area 12,500ha12,500ha
AVINIR II Data- Dated 09.01.2007
PAN-LISS III Merged Data- Dated 24.02.2006
FULL RESOLUTION IMAGES
PAN-LISS III MERGED
AVINIR II
CLASSIFIED DATA
AVINIR II
PAN- LISS III MERGED
RESULTS
•Spatial database creation of the study area for canals, sewage channels and vegetable farming area is already done using LISS III and PAN merged data.
• Plot level landuse of the study area is delineated using cadastral map and high resolution satellite data. Landuse classes are identified using non supervised technique of classification method.
• Regarding the PAN and LISS III merged data the urban area signature mixing with moist area class. But in AVINIR II data urban signature have identification problem. Thus it appears that identification of urban class signature in both AVINIR-II and LISS-III - PAN merged is not properly identified.
THANK YOU