影响土壤斥水性的污灌水质主成分分析  

Analysis of principal components of wastewater affecting soil water repellency

作　　者：陈俊英[1,2,3] 张智韬[1] Leionid Gillerman 汪志农[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [3]中国科学院水利部水土保持研究所,陕西杨凌712100 [4]本古里安大学杰克比.布劳斯坦沙漠研究所,以色列思德博克84990

出　　处：《排灌机械工程学报》2013年第5期434-439,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：中国博士后科学基金资助项目(20110491700);武汉大学水资源与水电工程科学国家重点实验室开放基金资助项目(2010B070);西北农林科技大学人才专项资金资助项目(2009)

摘　　要：为了探明不同污灌水质对土壤斥水性的影响,研究采用12种不同污染程度的生活污水对以色列3种类型的5种斥水土壤进行斥水性测定分析,通过对非均质条件下测定的土壤斥水持续时间进行标准化处理,并对12种污水中的9种独立水质指标进行主成分分析,计算污水水质综合指标,分析不同污水水质综合指标和不同主成分分量与土壤斥水性持续时间的关系.研究结果表明:黏性土和壤土的斥水持续时间与综合水质指标F值呈线性正相关关系,即土壤斥水持续时间随水质污染程度的增大而增大;砂质土壤的斥水持续时间与F值不具有统计学意义,即土壤斥水持续时间不受水质污染程度的影响.经多元回归分析得出,水质中的2个主成分分量与黏性土和壤土的土壤斥水性都呈正相关关系,而且第一主成分对土壤斥水性的影响大于第二主成分.In order to identify the effect of irrigation wastewater quality on soil water repellency,the repellency of five oils samples,which belong to three types of water-repellent soils collected in Israel,was measured for the domestic sewage with 12 different degrees of water pollution.The measured water drop penetration time（WDPT） on the heterogeneity soils was normalized,and the principal components analysis（PCA） was conducted for the nine individual water quality indices in those sewages.Subsequently,the aggregative index（F） of sewage quality was calculated,and the relationship of WDPT to F and individual water quality indices was analyzed.The results showed that there was a positive correlation between WDPT and F for clay and loamy soils,i.e.WDPT rises with increasing F;for sandy soils,however,there was no significant correlation,i.e.WDPT is not affected by degree of water pollution.The results of multiple linear regression showed that there was a significant positive correlation between WDPT and two principal components for clay and loamy soils.Furthermore,the influence of the first principal component was more dominated than the second one.

关 键 词：污水 灌溉 土壤斥水性 主成分分析 多元回归 水质指标 

分 类 号：S277.9[农业科学—农业水土工程] S152.7[农业科学—农业工程]