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本文对湖南省澧水流域各种降水量值进行了空间变异性初步研究，介绍和探讨了其研究方法和步骤，制作了半变异函数图，揭示了降水量的空间结构性－方向性和相关距离，在此基础上给出了一个应用实例－应用Ｋｒｉｇｅ法进行流域面平均雨量的最优估计．
In this paper, a preliminary study on the spatial variability of various precipitation values in the Huangshui River Basin in Hunan Province is presented. The research methods and steps are introduced and explored. Semi-variogram is made and the spatial structure of precipitation is revealed - On the basis of this, an application example is given - the best estimate of mean rainfall in basin by Krige method.