干旱地区农业研究2012，Vol.30Issue(1)：30-35,6.
县域土壤养分空间变异分析——以蒲城县为例
Analysis on spatial variability of soil nutrients at county level——A case study in Pucheng County
摘要
Abstract
CIS and geostatistical analysis method was used to analyze the spatial variability of four soil nutrients in-cluding organic matter, available nitrogen, available phosphorus and available potassium in Pucheng County. Traditional statistical analysis showed that variation coefficients of four kinds of soil nutrients ranged from 21 % - 80% and were medium in variation intensity. While the result of semi-variance analysis with geostatistics showed that Nugget/Sill of soil available N, P and K ranged from 25 % ~ 75 % and presented moderate spatial dependence; and Nugget/Sill of soil OM was 78% , and presented weak spatial dependence. A spatial distribution map of soil nutrients was exported by adopting Ordinary Kriging Model interpolation, and the characteristics of the spatial distribution of soil nutrients were then ana-lyzed .关键词
地统计学/土壤养分/空间变异Key words
geostatistics/ soil nutrient/ spatial variability分类
农业科技引用本文复制引用
秦占飞,常庆瑞..县域土壤养分空间变异分析——以蒲城县为例[J].干旱地区农业研究,2012,30(1):30-35,6.基金项目
国家自然科学基金(30872073) （30872073）
