石家庄平原区地下水硝酸盐氮空间插值方法研究

——基于四种方法的比较

打开文本图片集

中图分类号：P641；X523 文献标识码：A 文章编号：2097-5465（2025）06-0076-09

Abstract：ThisstudyutilizednitratedatafromgroundwaterintheShijiazhuangPlainareafortheyearO22.Fourinterpolation methodsinspatialanalysis—kriging，InverseDistanceWeighting，Splinemethod，andTrendSurfaceAnalysis—wereapliedA comparativeanalysisof thesemethodswasconductedtoselectthemostappropriateone，andtoanalyzethespatialdistribution characteristicsofnitrate.TheresultsindicatedthattheInverseDistanceWeightingmethodachievedthebest interpolation performanceatapowerof4，theSpline methodperformedbestataweightof1，andtheTrendSurfaceAnalysismethodyielded optimalresultsatanorderof6.TheInverseDistanceWeightingmethoddemonstratedthehighestaccuracy，whereastheTrend SurfaceAnalysismethodshowedthelowestacuracy.TheInverseDistanceWeighting methodwasfoundtobetercapture thespatial variationcharacteristicsofnitrateinthegroundwateroftheShijiazhuangPlainarea.Nitratenitrogeninthegroundwaterofthe ShijiazhuangPlainareainO2exhibitedapateofhigherconcentrationsinthewestandlowerconcentrationsintheastAreas withrelativelyhighconcentrations ereprimarilyZhaoxianCounty，ChanganDistrict，andXinhuaDistrict.Theprimarypolution sourceswereidentifiedasagriculturalactivities，aswellashumanactivitiessuchasindustrialsewage，domesticwasteandaure.

Keywords：Shijiazhuangplainarea；interpolationmethods；nitratenitrogen；spatial distributioncharacteristi

0 引言

硝酸盐是氮在地下水中的主要存在形式，是广泛存在的污染物，目前地下水的硝酸盐污染已成为全球范围的环境问题，会对人体健康以及生态环境产生严重影响。（剩余9760字）