焉耆盆地农田排渠水质变化及其空间分布  

Change of Water Quality and Its Spatial Distribution of Agricultural Drainages in Yanqi Basin

作　　者：赵婷[1] 周孝德[1] 郭梦京[1] 陈勇民 吴巍[1] 

机构地区：[1]西安理工大学西北旱区生态水利工程国家重点实验室,西安710048 [2]新疆环境保护科学研究院,乌鲁木齐830000

出　　处：《灌溉排水学报》2015年第9期66-71,共6页Journal of Irrigation and Drainage

基　　金：国家重点基础研究发展计划(973)项目(2012CB723201)

摘　　要：以焉耆盆地内的26条农田排渠为研究对象,选取CODCr、BOD5、矿化度等8项水质指标,采用因子分析和聚类分析对各个排渠的水质进行评价,并对排渠水体污染程度进行分类,在此基础上确定出对博斯腾湖咸化贡献大的农田排渠。结果表明,各排渠水质污染的主导因子是矿化度、硫酸盐、氯化物;本布图南干排、团结总干排、东大罕干排、黄水总干排综合污染程度高且是以矿化度等盐类污染为主要污染物;通过聚类分析可将农田排渠水体污染分为3类(综合污染程度高;综合污染度中等;综合污染度低);对博斯腾湖咸化贡献大的农田排渠是黄水总干排、团结总干排和解放一渠,应着重控制。With 26 agriculture drainage ditches in Yanqi Basin as materials,8kinds of water quality indexes（CODCr,BOD5,salinity,et al）were selected in order to evaluate water quality of agriculture drainage ditches using factor analysis and cluster analysis,and the water pollution degree was classified,then the drainages which had high salt pollution and great contribution to Bosten lake salinity were determined.The results showed the dominant factors of water pollution in each drainage were salinity,sulfate and chloride;The comprehensive pollution degrees were high in South channel,Tuanjie main channel,Dongdahan channel and Huangshui main channel,whose main pollutant were salinity pollution indicators;Drainage pollution degrees were divided into 3categories by cluster analysis（the comprehensive pollution degree was high,the comprehensive pollution was medium and the comprehensive pollution was low）;The drainage ditches,which had great contributions to Bosten lake salinity,were Huangshui main channel,Tuanjie main channel and Jiefang channel,so a comprehensive environmental management strategy should be strengthened in this agriculture drainages.

关 键 词：水质咸化 农田排渠 因子分析 聚类分析 博斯腾湖 

分 类 号：X824[环境科学与工程—环境工程]