土壤背景值数据差异的来源分析及土壤类型对背景值的影响

本文阐述了在我国共８６０多个土壤样品、４１种土类中的４８种元素背景值调查研究中，元素含量差异的来源并估计了各部分来源的差异所占比例；同时采用单因素方差分析法，研究了土壤类型对４８种元素背景值的影响。结果表明，土壤背景值数据的伯差主要来源于样品本身固有的差异；常量元素的采样偏差大于分析测试过程产生的偏差；而微量元素的分析测试偏差大于采样偏差。

The contribution of difference on the element background values in soils and the analysis of variance of single factor on soil groups.

This peper described the origin and proportion of the differences of tea element concentrations on the study of element background values in Chinese soil, most of the difference on the dement background values was generated from the poperties of soils by themselves; the sampling deviation was more than the deviation produced in the procedures of analysis for common elements in soils, and for trace elements, the deviation of analysis was more than the sampling deviation. The analysis of variance of single factor for determining whether the differential of the element concentrations in diverse great soil groups is significance or not has shawn that the differential of the concentrations of 38 elements in soils are greater, expecially, Na, Ca, Mg, and I, this means that the differential of the backgroundvalues of these elements is great remarkable significance, when the values are expressed by soil groups, but, the differential of the background values expressed by soil groups for the rare elements such as Ge, Zr, Ag, La, Nd, Tb are not significance.