不同下垫面条件对南方灌区氮磷污染排放的影响

张丽华 代俊峰 莫磊鑫 苏毅捷 曾鸿鹄

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节水灌溉 ›› 2018 ›› (2) : 66-70.
水环境与水资源

不同下垫面条件对南方灌区氮磷污染排放的影响

  • 张丽华1 ,代俊峰1,2 ,莫磊鑫1 ,苏毅捷1 ,曾鸿鹄1,2
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Effects of Different Underlying Conditions on Nitrogen and Phosphorus Pollution Load in Small Watershed of Lijiang River

  • ZHANG Li-hua1 ,DAI Jun-feng1,2 ,MO Lei-xin1 ,SU Yi-jie1 ,ZENG Hong-hu1,2
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摘要

摘要:以漓江流域上游青狮潭灌区金龟河试区为研究对象,开展野外原位试验,在研究区域内选取农田、鱼塘、果树、养殖业等4种典型的下垫面,在这些下垫面处选取支渠(河流)断面,对支渠断面的水质进行监测。利用主成分分析法确定出氨氮、总氮、总磷为灌区小流域影响河流水质的显著污染指标,应用单因素方差分析法(ANOVA)及其最小显著性差异(LSD)多重比较法,对4种下垫面间的污染物排放差异进行分析。单因素方差分析结果表明,氨氮和总氮在这四种下垫面组间差异最大;而总磷相对小一点,氨氮和总氮显著性水平分别为0和0.145。多重比较的结果表明这四种下垫面之间的均值差异均不同,不同的下垫面对污染指标的贡献率也不同,其中,养殖业下垫面与其他下垫面差异较大,其污染物贡献量最高,造成的水环境影响最大。

Abstract

In this study,four typical underlying surfaces,including the farmland,fish pond,fruit tree and livestock breeding in Jingu river experimental district of Qingshitan irrigation area in Lijiang River,were selected to carry out the site test. The sections of branch canals located in the inlets and outlets of these underlying surfaces were selected to monitor the water quality of the canal section. The principal component analysis showed that ammonia nitrogen,total nitrogen and total phosphorus greatly affected the river water quality. The singlefactor variance analysis method ( ANOVA) and its least significant difference ( LSD) were used to determine the differences in pollutant emissions between the underlying surfaces. The results of ANOVA showed that the difference between ammonia nitrogen and total nitrogen was the largest among the four underlying groups. The significant levels of ammonia and nitrogen were 0 and 0.145,respectively. The results of multiple comparisons showed that the difference between the four underlying surfaces was different,and the contribution rate of the different underlying surface was different; the difference between the livestock breeding and other underlying surface was different,and the livestock breeding was a main contributor for the water environment pollutant.

关键词

漓江 / 下垫面 / 氮磷 / 主成分 / 单因素方差分析

Key words

Lijiang river / underlying surface / nitrogen and phosphorus / principal component / single factor analysis of variance

基金

国家自然科学基金项目( 51569007) ; 广西自然科学基金项目( 2015GXNSFCA139004) ; 国际岩溶研究中心国际合作项目开放课题 ( KDL201601) ; 广西高等学校高水平创新团队项目( 002401013001) 。

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张丽华 代俊峰 莫磊鑫 苏毅捷 曾鸿鹄. 不同下垫面条件对南方灌区氮磷污染排放的影响[J].节水灌溉, 2018(2): 66-70
ZHANG Li-hua, DAI Jun-feng, MO Lei-xin, SU Yi-jie, ZENG Hong-hu. Effects of Different Underlying Conditions on Nitrogen and Phosphorus Pollution Load in Small Watershed of Lijiang River[J].Water Saving Irrigation, 2018(2): 66-70

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