江汉平原典型县域土壤养分空间分布研究
Spatial distribution of soil nutrients characteristics in Jianghan plain county
江汉平原是我国的重要粮食生产基地，本文以位于江汉平原西北腹地的沙洋县为研究区域，利用GPS定位，2007年秋在该县主要农业用地采集土样657个，分析了有机质、全氮、有效磷和速效钾的含量，应用传统统计学和地统计方法对数据进行了分析，结果表明，研究区域土壤肥力中等偏上，通过半方差函数分析，土壤有机质、全氮、有效磷存在中等空间相关性，速效钾空间相关性较弱；通过Kriging插值，制作了该县土壤主要养分空间分布图，结果表明区域内有机质和全氮有一定的相关性，呈大斑块分布；而有效磷和速效钾趋向于中小斑块变异，空间分布较破碎。
657 soil samples (GPS used for recording sample location) were collected in Shayang, located in the hinterland of northwest Jianghan plain, in 2007. OM, TN, AP and Ak contents were measured. The spatial pattern of the data were analyzed using both tradintional descriptive statistics and geo-statistics. The semi-variograms of geostatistics analysis indicated OM, TN and AP had moderate spatial autocorrelations, but AK had weak spatial autocorrelations. Maps of spatial distribution of soil nutrients were producing using kriging interpolation method, the result indicated OM and TN in the region has some relevance, were characterized by large-patch distribution. However, AP and AK were characterized by small and medium patch distribution.
贺立源、杨勇
农业基础科学环境科学基础理论农业科学研究
土壤养分空间分布江汉平原克里格
Soil NutrientsSpatial distributionJianghan plainKriging
贺立源,杨勇.江汉平原典型县域土壤养分空间分布研究[EB/OL].(2011-05-10)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/201105-236.点此复制
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