Agricultural Drought in Slovakia: An Impact Assessment NDVI and Satellite Based Data

This book gives an insight into the evaluation of drought in Slovakia and provides an assessment of Normalized Difference Vegetation Index (NDVI) as a method suitable for an evaluation of drought in agricultural land. Dry seasons in the time series from 1960 to 2014 were determined according to the monthly Palmer Drought Severity Index (PDSI). The field research was carried out on 12 sites including western Slovakia, Prešov, Trnava and Nitra regions. Data collected from satellite imagery, climate data analyses and drought indices was analysed to determine the value of NDVI as an evaluation tool.

1. Introduction/motivation

2.  State of the art

2.1           Agroclimatic regionalization

2.2           Agriculture and Climate change impacts in Slovakia

2.2.1         Air temperature and potential evapotranspiration

2.2.2         Precipitation

2.2.3         Drought climatology

2.2.4         Impact of drought on agriculture

2.3               Overview of drought assessment methods often used in agricultural landscape

2.3.1         Station based drought assessment

2.3.2         Satellite based assessment

2.3.3         Combined station/satellite based drought assessment

3. Material and methods

3.1          Climate data analyses and drought indices

3.2          Field crops data analyses

3.3          Satellite data

3.4 NDVI and PDSI methodology

4 .  Results

4.1          Evaluation of relationships between NDVI and PDSI

4.1.1 Impacts on crop yield forecasts

4.1.2 Practical use

4.1.3 Potential of applied methods

4.2          Results as the base for adaptation strategies in agriculture in Slovakia

5.     Conclusion

References