李志斌, 陈佑启, 姚艳敏, 石淑芹. 吉林省中部平原区土壤有效态中微量元素的空间变异特征[J]. 中国生态农业学报(中英文), 2007, 15(4): 30-35.
引用本文: 李志斌, 陈佑启, 姚艳敏, 石淑芹. 吉林省中部平原区土壤有效态中微量元素的空间变异特征[J]. 中国生态农业学报(中英文), 2007, 15(4): 30-35.
LI Zhi-Bin, CHEN You-Qi, YAO Yan-Min, SHI Shu -Qin. Spatial variation of available soil medium- and micro-element in Jilin middle plain[J]. Chinese Journal of Eco-Agriculture, 2007, 15(4): 30-35.
Citation: LI Zhi-Bin, CHEN You-Qi, YAO Yan-Min, SHI Shu -Qin. Spatial variation of available soil medium- and micro-element in Jilin middle plain[J]. Chinese Journal of Eco-Agriculture, 2007, 15(4): 30-35.

吉林省中部平原区土壤有效态中微量元素的空间变异特征

Spatial variation of available soil medium- and micro-element in Jilin middle plain

  • 摘要: 运用地统计学方法结合GIS技术研究了吉林省中部平原农业区土壤中微量元素的空间分布特征,通过对数转化、域法处理和Box-Cox转化3种数据处理方法 对土壤有效钙、有效 镁、有效硼、有效铜和有效锌进行了正态分布性检验。结果表明,Box-Cox转化成功地使有效钙、有效镁、有效铜、有效锌含量数据更好地服从正态分布,而域法处理能使有效硼含量数据更好地服从正态分布,削弱了异常值的影响。应用地统计学分析方法进行了半方差函数 的计算和最适合模型的拟合,得出各元素最好的理论模型,并绘制了各养分元素的空间分布 图。半方差分析的结果显示,各元素具有中等空间相关性。

     

    Abstract: Spatial distribution of soil medium- and micro-element in the middle plain of Jilin Province were investigated using geostatistics and geographic information system (GIS)techniques. With various processing methods, including logarithmic transformation, outlier exclusion and Box-Cox transformation, available Ca, Mg, B, Cu, and Zn contents were evaluated with normal distribution tests.The result shows that Box-Cox transformation is effective in achieving normal distribution data sets for available Ca, Mg, Cu, and Zn, while outlier exclusion is effective for available B weakening effect by outliers. Geostatistical analysis including calculation of experimental variograms and model fitting were conducted, and the distribution patterns of the soil nutrient elements plotted. Semivariogram analysis shows that the soil nutrient elements are moderately spatially correlative within a given range.

     

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