三峡水库蓄水前后库区及周边区域降水变化及其影响因素

胡艳茹, 梁丽娇, 何立平, 许文锋, 刘正学, 兰波

Precipitation change and its influencing factors in the Three Gorges Reservoir area and its surrounding areas before and after impoundment

HU Yanru, LIANG Lijiao, HE Liping, XU Wenfeng, LIU Zhengxue, LAN Bo

表3 各区域降水的多元线性回归曲线

Tab. 3 Multiple linear regression curve of precipitation in each region

多元线性回归方程 Sig. R2 F MAPE（%） 西北部 y = - 7.026 x 1 + 71.006 x 2 - 30.520 x 3 - 133.991 x 4 + 4173.559 0.088 0.298 2.329 11.46 腹地 y = 9.573 x 1 + 54.892 x 2 + 70.162 x 3 - 57.042 x 4 + 2641.253 0.072 0.313 2.503 10.30 南部 y = - 2.048 x 1 + 52.975 x 2 + 68.659 x 3 - 12.702 x 4 + 1637.222 0.030 0.373 3.276 8.07