agriculture drought disaster
Agriculture drought event
Agricultural drought index
atmospheric drought index
colligation drought index
Composite Drought Index
comprehensive meteorological drought index
daily dynamics drought index
drought index
抗旱指数
干旱指数
旱灾指数
干旱指标
干旱等级
干燥度指数
干燥度
动态监测
drought index reconstruction
flood and drought index
integrated drought index
integrated meteorological drought index
Keetch-Byram drought index