›› 2012, Vol. 24 ›› Issue (4): 0-685.

• 论文 •    

湖州表层土壤有机质的空间分布及相关性分析

陈江,常艳春,童丽华   

  1. 湖州市环境监测中心站,浙江 湖州 313000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-07-25 发布日期:2012-07-25

Analysis on spatial distribution and correlation of soil organic matter in surface soils of Huzhou

CHEN Jiang;CHANG Yan-chun;TONG Li-hua   

  1. Huzhou Environmental Monitoring Centre, Huzhou 313000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-07-25 Published:2012-07-25

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。

关键词: 土壤有机质, 空间分布, 相关性

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.

Key words: soil organic matter(SOM), spatial distribution, correlation