Aleš Vávra - Spatial Assessment of Phenological Observation on the Vysoké Pole Experimental Site

This presentation is co-financed by the European Social Fund and the state budget of the Czech Republic

Spatial Assessment of Phenological Observation on the Vysoké Pole Experimental Site

Aleš VÁVRA

Second InDOG Doctoral Conference, 14th October – 17th October 2013, Olomouc

Theory About phenology Phenology mapping Spatial aspect of phenology

Case study Data collection in experimental area Phenological observation Spatial processing of data

Introduction


Phenology is the study of periodic cycle of plants life events and how these are influenced by seasonal and interannual variations of climate.

Phenological phase of plants - Phenological phases (phenophase) is well recognizable and annually recurring state of the development of plants.

We can observe several phenophases in the growing season on each plant.

Phenology is part of the bioclimatology.

Phenology


Growing season - Timeframe in which the good climatic conditions (enough heat, plenty of rainfall) allow progress of the major life functions of plants.

Usually lasts from March to November. (it depends on location and conditions)

The most important phenological phases (at a wood plants):

Bud burst - Inflorence emergency First leaves - Beginning of flowering Yellowing of leaves - End of flowering Leaves fallen - Fruit ripennes

(vegetative) (generative)

Phenological observation


The results can be applied in:

Agriculture and forestry – research of vegetation cycles and determination of their time of sowing, harvesting, yields

Climate models and predictions – creation of phenological models and comparison with climate models

Human health – important for determining the onset, duration and location of pollen situations

Applications of phenological observations


Phenological mapping can express spatial aspect of data from observation

Phenological observations are in direct relation to climatic influences - phenological maps can be compared with climate maps

Based on phenological map, we can predict future phenologic development

Several methods of phenological mapping, depend on: amount of observed phenological data spatial arrangement of input data scale of mapping

Phenological mapping


Focused on comprehensive approach to phenological mapping of the landscape

Practically verify integration of several methods of data collection for the study of landscape

Processing and modelling with receive data and creation of time series datasets and maps

Activities: Activity 1 - Small format photography Activity 2 - Continuous monitoring of abiotic factors using sensor

networks Activity 3 - Phenological and landscape mapping Activity 4 - GIS modelling and data processing

Aims of case study


Experimental site is the location of the Vysoké Pole village. The location lies at an altitude of 423 m, about 7 km northwest of the town Valašské Klobouky (Zlín Region).

Site is using for research and study purposes, several methods of monitoring of landscape are using in this area

Experimental site Vysoké Pole


Acquisition of perpendicular or oblique images with high spatial resolution in the visible and near-infrared part of the spectrum (0.5 to 0.9 µm)

Using of two UAV devices - DRONE model PIXY and six-multirotor system Hexakopter XL

Outputs Photos of the area

in visible and near infrared part of the spectra were takenfrom April to October

Activity 1 - Small format photography



Using of sensors, data loggers and wireless sensor networks in the field

Important for calibration and verification of remote imagery and phenological mapping

Using of static multispectral camera for continuous sensing of amount of biomass

Outputs Time series datasets and trends of selected abiotic factors

(temperature, precipitation, soil moisture) Support data for verification and correlation with

phenological data Amount of biomass in different parts of growing season

Activity 2 - Continuous monitoring of abiotic factors using sensor networks


Temperature senzor (Hobo)

Senzors of soil moisture(Decagon EC 5 and VIRRIB)

Rain gauge

Control box interface

device SPAD-502 Multispectral camera image


Overall landscape mapping for determination of current state and assessment of sustainability

Phenological landscape mapping in area that focuses on comparing the seasonal development of selected plant communities at selected sites

Outputs Current land use map in the scale 1:10 000, including the

determination of the dominant species and evaluation of the degree of environmental stability index

Phenological time series mapping of selected plant species, including photodocumentation Beech, Pine, Hawthorn, Blackthorn, Elder, Oak and Wild Cherry

Activity 3 - Phenological and landscape mapping


26. 6.End of flower. (100%)

17. 7. Beg. of fructification 10%

10. 8.Fruit ripennes 10%




Creation of DEM and DTM, several characteristic of experimetnal site

Activity 4 - GIS modelling and data processing

Elevation Aspect

Slope Solar irradiation


Processing of data from small-format photography, NDVI and biomass


may june

august sept.

Vegetation index NDVI


Processing of data from phenological observation

Estimation of the onset of phenophase (end of flowering) for pine



Processing of data from phenological observation

Average deviation of onset of selected phenophases for oak



Practical testing of methods of data collection in the field Buying and testing new devices and software for data

collection and processing Educational benefit - involving students in research and

practical exercises Cooperation with other organization and use the results

for the practical development of the area Gaining experience for future projects and research

Benefits of case study

This presentation is co-financed by the European Social Fund and the state budget of the Czech Republic

Thank you for attention

Aleš VÁVRA, 15. 10. 2013 KGI UP [email protected]