基于综合遥感指数的松嫩平原西部草地退化及其对干旱的响应

刘文慧, 李欣烨, 李晓燕

Grassland degradation and its response to drought in the western Songnen Plain based on comprehensive remote sensing index

LIU Wenhui, LI Xinye, LI Xiaoyan

表1 基于SPEI指数的干旱分级

Tab.1 Drought classification based on SPEI

SPEI >-0.5 (-1,-0.5] (-1.5,-1] (-2,-1.5) ≤-2 分级 无旱 轻度干旱 中度干旱 重度干旱 极度干旱