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

图7 2000—2020年松嫩平原西部干旱频率空间分布

Fig.7 Spatial distribution of drought frequency in western Songnen Plain during 2000—2020