Using Rotated EOF to analyze regional character of annual and seasonal rainfall, its shows that the main variation of rainfall in the province is in direction from south to north, and the next for east and west.

• 其后应用旋转主因子分析方法对年、季降水进行区域性分析，结果表明全省降水变化主要以南北向变化为主，东西向为次，同时给出了各季具体的分区?围。