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1997~2008年京杭大运河扬州段水质状况研究
引用本文:华常春,高桂枝,陈晨.1997~2008年京杭大运河扬州段水质状况研究[J].环境科学与技术,2010,33(12).
作者姓名:华常春  高桂枝  陈晨
基金项目:扬州市科技基础设施建设计划项目,江苏省大学生创新课题编号
摘    要:研究京杭大运河水污染变化趋势及主要影响因子,对于更有效提高京杭大运河水质、更大的发挥其功能、保证南水北调工程具有重要战略意义和长远环境效益。依据1997~2008年京杭大运河扬州市区段水质监测数据,以内梅罗水污染指数为评估指标,采用方差分析方法,对京杭大运河扬州市区段水质现状进行了分析。结果表明:京杭大运河扬州市区段主要污染物是氨氮、挥发酚和石油类;氨氮年均浓度变化趋势较为平缓,在Ⅲ和IV类水质指标间浮动;挥发酚年均浓度变化较为活跃,总体有上升趋势,呈V类水质指标;石油类年均浓度在1998年至2001年间污染较为严重,超标达3倍以上,其它年份浓度维持在0.05mg/L左右;1998~2001年间京杭大运河扬州市区段水质处于污染状态,其余年份较好。该文研究成果为扬州市水资源分配和利用提供了科学依据。

关 键 词:水质状况  内梅罗污染指数  方差分析

Water Quality at the Section of Yangzhou City of the Beijing-Hangzhou Grand Canal in 1997-2008
HUA Chang-chun,GAO Gui-zhi,CHEN Chen.Water Quality at the Section of Yangzhou City of the Beijing-Hangzhou Grand Canal in 1997-2008[J].Environmental Science and Technology,2010,33(12).
Authors:HUA Chang-chun  GAO Gui-zhi  CHEN Chen
Abstract:In order to improve the water quality and make better use of Yangzhou reach of Beijing-Hangzhou Grand Canal,and to guarantee the Project of Water Transfer from South to North,as well as maintain environmental sustainability,the pollution trend and main reasons of the pollution were studied. Based on the analysis of 1997~2008 monitoring data of water quality of Yangzhou reach of the Canal,as well as Nemerow index and variance analysis of the mean square deviation,an analysis was done on the water condition of Yangzhou reach of the Canal. Results indicated that main pollutants of Yangzhou reach were ammonia nitrogen,volatile hydroxybenzene and petroleum. The concentration of ammonia nitrogen was developing smoothly,floating from water quality level III to level IV. Concentration of volatile hydroxybenzene,which was comparatively active,has raised to some extent,and maintained water quality level V. Concentration of petroleum was seriously high during 1998~2001,which was higher than 3 times of the normal concentration. In other years,its concentration maintained near 0. 05mg/L and other kinds of pollutants did not change notably. The reach was severely polluted during 1998 to 2001,while in other years it was lightly polluted. The study would provide scientific reference for the distribution and utilization of water resource in Yangzhou City,Jiangsu Province.
Keywords:condition of water quality  Nemerow index  variance analysis
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