Keetch-Byram干旱指数
Keetch-Byram drought index
LAS环境干旱
the LAS environment drought
Palmer干旱指数
palmer drought severity index
半干旱半湿润地区
Semi-arid and semi-humid region
Semi-arid and Semi-humid Area
semid-arid and semi-humid watershed
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
半干旱草原微景观区
semiarid grassland landscape area