基于TRMM数据与SPI指数的广西地区旱涝演变分析

晏红波, 韦晚秋, 卢献健, 黄俞惠

A study of drought and flood evolution in Guangxi based on TRMM data and SPI drought index

YAN Hongbo, WEI Wanqiu, LU Xianjian, HUANG Yuhui

表3 回归分析法广西降雨旱涝变化趋势

Tab.3 Change trend of rainfall drought and flood in Guangxi by regression analysis

分级标准 变化程度 面积百分比/% θSlope≤-0.01 重度干旱 0.3 -0.01<θSlope≤0 轻度干旱 5.0 0<θSlope≤0.005 正常 64.5 0.005≤<θSlope≤0.01 轻度洪涝 30.0 θSlope>0.01 重度洪涝 0.2