滹沱河忻州段水质时空变化及影响因子评价与分析

作者	单位
赵鹏宇	忻州师范学院旅游管理系, 山西忻州 034000
步秀芹	广西壮族自治区环境保护科学研究院, 广西南宁 530000
崔嫱	忻州师范学院旅游管理系, 山西忻州 034000
刘秀丽	忻州师范学院地理系, 山西忻州 034000
徐学选*	中国科学院水利部水土保持研究所, 陕西杨凌 712100

通讯作者:徐学选* 中国科学院水利部水土保持研究所, 陕西杨凌 712100

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中文摘要:

运用综合污染指数法探讨滹沱河忻州段水质时空变化规律及关键影响因子。结果表明:在时间序列上,劣Ⅴ类河长比例总体呈先波动(1993—2003年),再波动上升(2004—2008年),最后快速下降趋势(2009—2011年);综合污染指数从高到低依次为丰水期2.15、平水期1.75、枯水期1.28,4项水质指标综合污染指数从高到低依次为DO、COD_Mn、挥发酚、氨氮。空间上,界河铺-济胜桥段指数最高,水质最差,出境段面南庄水质最好,下茹越、西留属、崞阳桥断面介于上述两者之间。为此,将滹沱河分为污染控制区、综合改善区与生态恢复区进行分段管理。工业废水排放量、污水处理能力、GDP、人口数量是水质的主要影响因子,相关系数分别为0.882、0.905、0.919和0.809。

英文摘要:

This paper employs the comprehensive method of pollution index to investigate the temporal and spatial variation of water quality and its key affecting factors in XinZhouHutuo river basin. It is proved that on the time series, the wrose V river length showed a particular tendency which waved firstly (1993—2003), then rose unstably (2004—2008) and finally declined rapidly (2009—2011). The comprehensive pollution indexes from high to low were wet period 2.15, flat-water period 1.75 and dry season 1.28. And the comprehensive pollution indexes of the water quality indicators from high to low were DO, CODmn, Volatile penal and ammonia nitrogen. On the spatial distribution, the comprehensive pollution index of Jiehe Shop-Qisheng Bridge was the highest and its water quality was the worst while Nanzhuang in the exit kept the best. The water quality of Xiaruyue Xiliushu and Guoyang Bridge lay in themiddle.So Hutuo River can be divided into three zones to be managed it in subsection (the pollution cantrol zone, comprehensive improvement zone and ecological restoration zone). The key factors that impact on the water quality include the industrial water, sewage treatment capacity, GDP and population. The correlation indexes were 0.882, 0.905, 0.919 and 0.809.

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