降雨空间插值方法在东江流域的比较运用  

Application and Comparison of Rainfall Spatial Interpolation Methods on Dongjiang River Basin

作　　者：何艳虎[1,2] 林凯荣[1,2] 

机构地区：[1]中国水利水电科学研究院,北京100044 [2]中山大学地理科学与规划学院,广东广州510275

出　　处：《水力发电》2010年第10期7-9,共3页Water Power

基　　金：中国水利水电科学研究院开放基金项目(IWHR02009003);国家自然科学基金资助项目(50809078);中央高校基本科研业务费专项基金资助项目(3161395)

摘　　要：利用东江流域46个站点的已知实测降雨量,运用基于ArcGIS的三种空间插值方法(IDW、Spline、Krige)选取不同数目雨量站对东江流域降雨量进行空间插值并检验插值结果的优劣。结果表明:三种插值方法的插值结果基本能反映流域降雨量的空间分布特征,IDW法更适合东江流域的降雨量空间插值;东江流域的降雨空间插值受已知降雨量站点数目大小影响,各站点降雨量空间插值精度因插值方法的选择而异。Three spatial interpolation methods （IDW, Spline and Krige） based on ArcGIS were used to study the rainfall in Dongjiang River basin, and the interpolation results were compared with the measured rainfall by 46 measuring stations in basin. The comparisons show that three interpolations can basically reflect the spatial distribution of precipitation and the IDW method is more suitable for Dong, jiang River basin, the interpolations are affected by the number of measuring stations which are used for interpolation and the accuracy for each measuring station diflers due to the choice of different interpolation method.

关 键 词：空间插值 降雨量 比较 东江 

分 类 号：O241.3[理学—计算数学] P426.613[理学—数学]