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《Journal of Guizhou University(Natural Sciences)》 2018-06
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Comparative Study of Spatial Interpolation Method of Tobacco-land Soil Thickness in Bijie Based on GIS

FU Delong;WU Xuemei;TAO Peijie;ZHANG Fugui;CAO Tingmao;Bijie Branch of Guizhou Provincial Tobacco Corporation;College of Mechanical Engineering,Guizhou University;  
Based on the statistical analysis module of geographic information system-ArcMap,respectively,492 samples of tobacco fields in Bijie were interpolated by inverse distance weight,spline function and ordinary Kriging,and the interpolation accuracy was evaluated by using cross validation method.The results show that the ordinary Kriging has the best interpolation accuracy for tillage depth,plough pan and cultivable soil layer.For tillage depth and cultivable soil layer,the interpolation accuracy of spline function is better than that of inverse distance weight;for plough pan,the interpolation accuracy of inverse distance weight is better than that of spline function.The results of ordinary kriging interpolation show that,The indexes of tobacco-land soil thickness of Hezhang county and Weining county are deeper.The soil thickness of Qixingguan county,Dafang county,Dafang county and Qianxi county junction are shallower.
【Fund】: 中国烟草总公司贵州省公司科技项目(中烟黔科[2016]6号-201613);; 贵州省烟草公司毕节市公司科技项目(201652050024140);; 贵州省科技计划项目(黔科合支撑[2017]2595)
【CateGory Index】: S572;S151.9
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