Agricultural drought monitoring based on vegetation health index in East Java Indonesia using MODIS Satellite Data

摘要

Agriculture is among the most vulnerable of all sectors to drought.Droughts cause serious effects on the agricultural sector due to its heavy dependence on rainfall.In the present work,we use the Vegetation Health Index(VHI)of MODIS Data as drought indices to monitoring the drought over East Java,Indonesia.VHI is computed based on the vegetation index and land surface temperature which are very important satellite products for drought monitoring with remote sensing.VHI describes vegetation health from the combination of TCI VCI.Based on VHI monitoring drought area distribution increase 3.69% in period 2017-2018.The highest distribution of drought area occurs in July to October.Average distribution of drought area is 22.24% in 2017,and 25.93% in 2018 from total wide 1.174,586 km~2 of paddy field area.Based on VHI value in 2017 to 2018 the drought maps in agricultural area of East Java were dominated by moderate drought.