【作者】 胡忠玲； 沈冰；

【Author】 Hu Zhongling;Shen Bing;Key Lab of Northwest Water Resources and Environment Ecology,Xi’an University of Technology;

【机构】 西安理工大学西北水资源与环境生态教育部重点实验室；

【摘要】 本研究采用反距离加权法(1DW)、样条函数法(Spline)、普通克里金(Kriging)插值方法对岔巴沟流域13个观测站点1959～1989年年降水量进行空间插值分析,得出3种插值方法均能反映出岔巴沟流域多年降水空间分布格局(降雨量从西南到东北减少),进一步用交叉验证法得出3种插值方法的精度较接近,精度高低顺序为:Spline>Kriging>IDW。更多还原

【Abstract】 In this study,average annual precipitation data of the last 31 years from 1959 to 1989 at 13 observation stations in Chabagou basin was analyzed with the methods of Inverse distance weight tension.Spline,Ordinary Kriging.The results indicate that all the three interpolators can generally reflect the spatial distribution of precipitation of Chahagou basin(rainfall decrease from southwest to northeast).Futher conclusion obtained by cross-validation is that the accuracy of interpolation methods is close and in the order of:Spline>Kriging>IDW.更多还原