极限干旱历时  critical drought duration

极限水文干旱历时  critical hydrologic drought duration

干旱时间  dry time

干旱时空分布  drought spatial distribution

干旱时期  Droughty period; Period of Drought

[干]旱  drouth; Drought

D政府间干旱和发展管理局  IGAD

Keetch-Byram干旱指数  Keetch-Byram drought index

K干旱指数  K drought index

LAS环境干旱  the LAS environment drought

Palmer干旱指数  palmer drought severity index

S-1干旱监测  drought monitoring

S干旱指数  S drought index

半干旱  Productivity; semi-arid; semiarid; Semiaird; Semi-arid area; Semi-arid Region; Semiard; seeding period; Arid; Hunshandake

半干旱半湿润  semi-dry and semi-humid

半干旱半湿润地区  Semi-arid and semi-humid region; semid-arid and semi-humid watershed; Semi-arid and Semi-humid Area

半干旱半湿润流域  semi-humid and semi-arid catchment

半干旱半湿润气候区  Semiarid and subhumid climatic region

半干旱草地  semi-arid grasslands