摘要
本文对山西255个土壤样品(A层)中的12种微量元素含量与土壤颗粒(1.0~0.01mm和0.01~0.001mm)含量分别进行相关分析,结果表明,上述绝大多数元素的含量与土壤颗粒含量之间呈显著相关性。同时将12种元素的含量分别与上述两组土壤颗粒含量进行回归分析,得出各元素的推算模型。以此模型,即根据1.0~0.01mm或0.01~0.001mm土壤颗粒含量,推算出土壤元素的含量。经验证,其推算结果与元素的实测值基本一致。
The relationship between content of 12 trace elements in 255 soil samples(A-layer)and size of grain in soil(1.0~0.01 mm and 0.01~0.001 mm)of Shanxi province are deter-mined by correlation analysis.It shows that the contents of trace elements are markedly cor-related with size of grain in soil.The calculation models for every element are established,also with regression analysis,according to this model,the contents can be calculated fromthe content of grain size in soil of 1.0~0.01 mm or 0.01~0.001 mm.The calculation re-sults are consistent with those of the experiment.
基金
国家"七五"科技攻关重点研究项目
关键词
土壤粒度
微量元素
相关分析
回归分析
土壤
size of grain in soil,trace element,correlation analysis,regression analysis