Title: Research on Soil Nitrogen and Phosphorus Spatial Variability in Hilly Area under Village Scale
Abstract:Statistical methods and GIS technology were used for the analysis of the spatial variability,to reveal the spatial variability of soil alkali-hydrolysable nitrogen,rapidly available phosphorus under t...Statistical methods and GIS technology were used for the analysis of the spatial variability,to reveal the spatial variability of soil alkali-hydrolysable nitrogen,rapidly available phosphorus under the village scale.The results indicated:In the village scale,soil alkali-hydrolysable nitrogen,rapidly available phosphorus content has moderate variability.The coefficients of variation were 40.27% and 64.21%.Soil alkali-hydrolysis nitrogen semi-variance function optimal theory model for Gauss models,and had a strong spatial correlation,C0/(C0+C)value was 14.5%,the spatial correlation distance was 61 m.Rapidly available phosphorus in exponential model to simulate the best,with a moderate degree of spatial correlation,C0/(C0+C)value was 45.0%,the spatial correlation distance was 47 m.The soil alkali-hydrolysable nitrogen in east-west direction on exhibit anisotropic,and terrain showed good consistency.Soil rapidly available phosphorus in the East,North and South direction had obvious characteristics,exhibiting anisotropy.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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