| 湖州表层土壤有机质的空间分布及相关性分析 |
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| 引用本文： | 陈江,常艳春,童丽华. 湖州表层土壤有机质的空间分布及相关性分析[J]. 浙江农业学报, 2012, 24(4): 680-685 |
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| 作者姓名： | 陈江 常艳春 童丽华 |
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| 作者单位： | 湖州市环境监测中心站,浙江湖州,313000 |
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| 基金项目： | 环境保护部全国土壤现状调查及污染防治项目，湖州市科技局科研项目《湖州市土壤环境质量信息管理系统研究》 |
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| 摘 要： | 以湖州表层土壤中有机质为研究对象,利用地统计与GIS技术相结合的方法研究该地区土壤中有机质含量的空间分布特征。结果表明,研究区土壤有机质含量呈正态分布,平均值22.3 g.kg-1,变异系数0.44。方差和地统计分析表明,土壤有机质最理想的模型为球状模型,研究区土壤有机质含量空间变异具有各向异性特征,呈中等的空间相关性。结合普通克里格插值法,获得研究区土壤有机质含量的空间分布图。相关性分析表明,土壤有机质含量与总氮含量呈显著相关。
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| 关 键 词： | 土壤有机质 空间分布 相关性 |
Analysis on spatial distribution and correlation of soil organic matter in surface soils of Huzhou |
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| CHEN Jiang , CHANG Yan-chun , TONG Li-hua. Analysis on spatial distribution and correlation of soil organic matter in surface soils of Huzhou[J]. Acta Agriculturae Zhejiangensis, 2012, 24(4): 680-685 |
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| Authors: | CHEN Jiang CHANG Yan-chun TONG Li-hua |
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| Affiliation: | (Huzhou Environmental Monitoring Centre,Huzhou 313000,China) |
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| Abstract: | The spatial distribution character of soil organic matter(SOM) content in surface soils of Huzhou was investigated,utilizing combined method of geostatistical and GIS techniques.Results showed that SOM content followed a normal distribution with arithmetic mean of 22.3 g·kg-1 and variation coefficient of 0.44.Based on the results of ANOVA and geostatistics,the best model for semivariogram of SOM was spherical model.The SOM content exhibited anisotropy and the degree of spatial autocorrelation was moderate.A contour map of SOM content was obtained using ordinary Kriging interpolation.Analysis of correlation showed that the relationship between SOM content and TN content was remarkable. |
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| Keywords: | soil organic matter(SOM) spatial distribution correlation |
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