渭河底泥有机质的空间分布及与其他污染物相关性  

Spatial distribution of organic matter and the correlational study of pollutions of Weihe River

作　　者：任朝亮[1] 宋进喜[1] 王珍[1] 于芳[1] 

机构地区：[1]西北大学城市与环境学院,西安710127

出　　处：《干旱区资源与环境》2014年第3期123-128,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金(51079123);教育部留学科研启动基金(教外司留[2010]1174);教育部新世纪优秀人才支持计划项目(NCET-11-1045)资助

摘　　要：通过对渭河干流5个研究点河水中的总氮、总磷、悬浮物、酸碱度和底泥中的有机质、重金属(Cd、Pb、Zn和Cu)的含量进行测定,采用空间统计分析法和Pearson相关系数法对数据进行处理。结果表明:底泥中有机质含量在5个研究点中临潼最大(6.61g/kg)、草滩最小(2.26g/kg),呈现为临潼>咸阳>眉县>华县>草滩;有机质空间特征为水平方向上呈"波浪型"分布,垂直方向上河流上游大部分为上层大于下层,下游情况相反;水质指标总氮、总磷、悬浮物、酸碱度及底泥中重金属Cd、Pb和Zn和底泥中有机质含量具有较好的相关性,关系最为密切的是悬浮物(0.743)和重金属Cd(0.802)。Taking five study points of Weihe River main stream as samples,the total nitrogen,total phosphorus,suspended matter,power of hydrogen in river water and organic matter and the content of heavy metals（Cd、Pb、Zn and Cu） in sediment of Weihe River were measured.Through the space statistical analysis and Pearson correlation coefficient method,this text also made spatial analysis of organic matter and correlation analysis between other pollutants and organic matter.The results showed that organic matter of sediment in five study points appeared as： LintongXianyang MeixianHuaxianCaotan,Lintong ＇s maximum（6.61g/kg） and Caotan ＇s minimum（2.26g/kg）;The distribution of organic matter in sediment could be regarded as ＂ Wavy type＂ in the horizontal direction,and in the vertical direction it was relatively complex,in the upstream regions that in the upper layer was greater than that in the lower,contrary to the condition in the downstream regions;Organic matter of sediment had significant correlation with total nitrogen,total phosphorus,suspended matter,pH value,and had significant correlation with Cd,Pb and Zn,and had the most closely related to the suspended matter（0.743） and Cd（0.802）.

关 键 词：底泥有机质 空间分布 相关性 水质指标 重金属 

分 类 号：S522[农业科学—作物学]