【作者】 李晶晶； 李俊； 黄晓荣； 奚圆圆；

【Author】 LI Jingjing;LI Jun;HUANG Xiaorong;XI Yuanyuan;College of Hydraulic and Hydroelectric Engineering,Sichuan University;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University;

【机构】 四川大学水利水电学院； 四川大学水力学与山区河流开发保护国家重点实验室；

【摘要】 为了搞清楚在地下水水质评价中如何正确选择插值方法,本文以四川德阳某地区的38个地下水样本点为例,采用反距离权重法、样条函数法、克里金法三种插值方法对各样本中的2个化验项目即氯离子和铁离子进行了空间插值,并选择交叉验证法验证插值效果。两种离子的插值结果都显示:克里金法的插值效果最好,它可依据地下水流向确定相应的权重值。由此得出在地下水水质评价中,空间插值方法首选为克里金插值法。更多还原

【Abstract】 To understand how to choose the interpolation method in the Groundwater Quality Evaluation,the paper setting 38 groundwater samples points in an area of Deyang as example,interpose two laboratory project—chlorine ions and iron ions for each of the sample using the inverse distance weighting method,splines and Kriging interpolation methods,and select the cross-validation method to validate the three interpolation effect.Interpolation results of the two ions are displayed that the effect of Kriging is best,which can determine the corresponding weight value on the basis of groundwater flow.It follows that in the groundwater quality evaluation,the best spatial interpolation method is Kriging method.更多还原