摘要
为了研究土壤水中盐分离子对其电导率的影响程度。文章采用主成分分析法对影响电导率的盐分离子进行分析。结果表明:土壤水电导率主要受Cl-、SO42-、Na+这3种离子的影响,其次受控于水溶液中的HCO 3-与K+这2种离子;影响土壤水电导率的7种离子之间存在严重的多重共线性,应用主成分回归方法建立的电导率预测模型效果较好。这为进一步研究土壤水盐运移理论提供了一种新思路。
To study influence of the salt ions in soil water on the electrical conductivity,the paper adopts the principal component method to analyze salt ions which affect the electrical conductivity.The results showed that the soil water electrical conductivity are mainly affected by Cl-,SO42-,Na+ ions,secondly affected by HCO3-and K+;7 kinds of salt ions and electrical conductivity have serious multicollinearity,principal component regression method can well predict electrical conductivity.This provides a new way for further study on salt-water movement theory.
出处
《地下水》
2011年第6期7-9,共3页
Ground water
关键词
盐分离子
电导率
土壤水
主成分分析
Salt ions,electrical conductivity,soil water and principal component analysis
