华北地区降水量的小波分析

由于华北各地区受气候影响不同，不同地区的降雨变化也有很大差异，因此为全面分析华北地区的未来水资源量的变化趋势，本文将华北地区划分为6个代表区域，利用小波分析方法研究了华北地区降水分布的特征和年代际变化，在此基础上，对今后几年华北降雨的演变趋势怍一初步的探讨和估计。这对掌握华北地区水资源量的演变规律是一个有益的探索。

Wavelet Analysis on the Precipitation in North China

Owing to the difference among the climate influences on the different regions, the water resource volume in north China varies greatly. In order to study the future trend of precipitation in north China, on the classifying of the 25 primary experimental stations into 6 representative sub-regions, this paper probed into in different period and different scale of the regions, then put forward and analyzed the evolvement trend of precipitation several years from now on in north China. The results shown that the 10-year scale periodicity signals of precipitation are apparent in Southeast and Beijing-Tianjin-Tangshon sub-regions with relative rich water resources and the 1-year scale periodicity signals are remarkable in the Northeast and West subregions with relative scarce water resources, which will result in different precipitation situations in the various parts of the North China. Thus this paper is an instructive search for mastering the evolvement law of precipitation in north China.