作　　者： ; ; ; ;

机构地区： 华南农业大学资源环境学院

出　　处： 《华南农业大学学报》 2004年第3期22-25,共4页

摘　　要： 应用地统计学,结合地理信息系统(GIS)研究了广州城郊岑村地区农用地土壤表层(0-20 cm)的有机质、碱解N、有效P、速效K等4种养分含量的空间分布特征.结果表明,有机质和碱解N为正态分布,有效P和速效K为对数正态分布;半方差分析的结果表明大部分土壤养分在一定间距内存在空间相关性,且为强烈的空间自相关,用普通克立格法进行最优内插,得养分含量分布图,并分析了各土壤养分的分布状态,此结果可进一步应用于城郊农业生产. Geostatistical methods were used in combination of GIS information analyze the spatial distribution characteristics of organic matter, and available nitrogen, phosphorus and potassium in the 0 - 20 cm layer of Cencun cropfield in Gangzhou suburb. The results indicated that the organic matter, and available nitrogen showed a normal distribution, available phosphorus and potassium with a lognormal distribution; Semi-variance analysis showed that the 4 soil nutrient content were strong correlated in a given spatial range. The distributing maps of soil nutrients were drawn by using Ordinary Kriging, and the distributing results of soil nutrient were analyzed. These results showed further application in exurban agriculture production.

关 键 词： 农用地土壤 土壤养分 空间变异性 地统计学 地理信息系统 广州市 土地利用结构

领　　域： [农业科学] [农业科学]