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-  2003 

黄土高原小流域土壤养分的空间分布格局-Kriging插值分析

DOI: 10.11821/yj2003030014

Keywords: 黄土高原,土壤养分,土壤有机质,Kriging插值

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Abstract:

摘要： 本文应用Kriging空间内插法,分析了黄土高原大南沟流域土壤有机质以及全N、全P、有效N和有效P等4种养分含量的空间分布格局。结果表明:土壤有机质呈现出坡上部低于坡下部的规律,其含量低于05%所占的面积最大,以耕地分布的区域为主,较高含量(06～08%)则分布在农果间作地和林地的区域;土壤全N的分布格局与土壤有机质具有相似性,只是坡下部的全N含量高于坡上部的趋势较为明显;土壤全P含量相差较小为138%,不同全P含量的空间分布面积基本相等;有效N和有效P并未表现出土地利用和景观位置控制的分布格局,有效P的空间分布较有效N更为复杂。

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