[1]汪翠英,杨勤科,郭伟玲,等.区域水土流失研究中降雨量空间插值方法选取[J].水土保持研究,2008,15(02):88-91.
　WANG Cui-ying,YANG Qin-ke,GUO Wei-ling,et al.Selection of the Spatial Interpolation Methods for Precipitation in the Regional Soil Erosion[J].Research of Soil and Water Conservation,2008,15(02):88-91.
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区域水土流失研究中降雨量空间插值方法选取

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 15 期数: 2008年02期 页码: 88-91 栏目: 出版日期: 2008-04-20
Title:
Selection of the Spatial Interpolation Methods for Precipitation in the Regional Soil Erosion
作者:
汪翠英1,2, 杨勤科1,2, 郭伟玲1,2, 姚志宏1,2, 李文凤1,2
1. 中国科学院水利部水土保持研究所, 陕西, 杨陵, 712100;
2. 西北农林科技大学资源环境学院, 陕西, 杨陵, 712100
Author(s):
WANG Cui-ying1,2, YANG Qin-ke1,2, GUO Wei-ling1,2, YAO Zhi-hong1,2, LI Wen-feng1,2
1. Institute of Soil and Water Conservation, Chinese Academy of Sciences And Ministry of Water Resources, Yangling, Shanxi 712100, China;
2. College of Resources and Environment, Northwestern A & F University, Yangling, Shanxi 712100, China
关键词:
普通克里格法; 距离反比法; 降雨
Keywords:
inverse distance weighted; Universal Kriging; precipitation
分类号:
S157
摘要:
在区域水土流失模型研究中,空间插值可提供每个计算栅格的气象要素资料.考虑到研究区域降雨与高程相关性很弱.不宜采用梯度距离反比法(GIDS),故采用距离反比法(IDW)和普通克里格法(Kriging),对延安示范区及其周围共50个站点2000-2003年的5-10月逐月降雨量进行插值.交叉验证结果表明:对2种插值方法,二者经过对数变换后平均相对误差(MRE)为8.30%和7.67%,分别比原始数据插值后的MRE下降了23.17%和23.50%,说明插值精度得到了提升,对研究区域某一年逐月降水的插值Kriging方法比IDW方法更加精确.
Abstract:
Every cell’s climatic information can be used by interpolation method when researching district soil erosion model,it is important to compare the results obtained using alternative methods applied to each data set.In this study,two methods for spatial interpolation of precipitation data were compared using 2003 year six months precipitation from the Yah,an demonstration area was interpolated using inverse distance weighted(IDW) and Universal Kriging methods.Corresponding cross-validation test show that a log-transformation improves the accuracy,by a log-transformation the value of MRE is 8.30% and 7.67% in the methods of IDW and Kriging respectively that is lower 23.17% and 23.50~ than the result of original data.In addition,the method of GIDS can not be used in the study.Universal Kriging method is more accurate in predictions than IDW in this area.

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相似文献/References:

[1]刘鹏,张万昌.考虑数据变换的泾河流域月降雨空间插值[J].水土保持研究,2008,15(04):1.
　LIU Peng,ZHANG Wan-chang.The Month Precipitation in Jinghe River Basin Considering Data-transformation[J].Research of Soil and Water Conservation,2008,15(02):1.

备注/Memo

收稿日期:2007-10-30;改回日期:。
基金项目:国家重点基础研究发展计划"973计划"项目(2007CB407204),"十一五"国家科技支撑计划项目(2006BAD09805);黄委会治黄专项(2004SZ01-04)
作者简介:汪翠英(1982- ),女,在读硕士,主要从事GIS在水土保持中的应用研宄.
通讯作者:杨勤科(1962- ).男.研究员,博士.主要从事区域水土流失和GIS应用研究.E-mail:qkyang@ms.iswc.ac.cn
通讯作者:杨勤科(1962- ).男.研究员,博士.主要从事区域水土流失和GIS应用研究.E-mail:qkyang@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01