2012年中美两国干旱的对比分析

刘书言,荣艳淑,吕星月,殷雨婷

Comparative Analysis of Drought in China and the United States in 2012

Shuyan LIU,Yanshu RONG,Xingyue LYU,Yuting YIN

表1 标准化降水指数的干旱等级划分标准

Tab.1 The classification standard of drought grades based on standardized precipitation index

等级 类型 SPI 0 无旱 SPI>-0.5 1 轻旱 -1.0<SPI ≤-0.5 2 中旱 -1.5<SPI ≤-1.0 3 重旱 -2.0<SPI ≤-1.5 4 特旱 SPI ≤-2.0