Title: Spatial Variability of Soil Nutrients Based on ArcGIS Geostatistical Analyst A Case Study in Jianshui County of Yunnan Province
Abstract:By the method of geostatistics combined with GIS,the spatial variability of soil nutrients in Jianshui County of Yunnan Province,such as available nitrogen(AN),organic matter(OM),available phosphorus(...By the method of geostatistics combined with GIS,the spatial variability of soil nutrients in Jianshui County of Yunnan Province,such as available nitrogen(AN),organic matter(OM),available phosphorus(AP),available potassium(AK) and organic matter(OM),were analyzed with ArcGIS geostatistical analyst.Results showed that the variation coefficients of four kinds of soil nutrients ranged from 48% to 82%,and the variation coefficient of AP was largest.Gaussian was the best variation function model to predict AN and OM contents,while exponential model was the best for AP and AK.The Nugget/Sill of AN,AP,AK and OM ranged from 42% to 88.7%.AN and AP presented a moderate spatial dependence.AK and OM presented weak spatial dependence.The ranges of four soil nutrients ranged from 3548.9 m to 7584 m.It was more directly to understand the soil nutrients status of Jianshui County with distribution maps of the nutrients content which were drew by the best interpolation of kriging method.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 1
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