摘要
以2009年12月和2010年4、8月的全太湖湖滨带水质监测数据为基础,以TN、TP、NH3-N、COD Mn、DO为评价指标,采用水质标识指数评价法对太湖湖滨带水质进行评价。水质指标基本信息显示,NH3-N冬季、春季空间变异较大,TP夏季空间变异较大;单因子标识指数评价结果显示,太湖湖滨带水体水质因子污染风险时空差异显著,TN冬季、春季全区域污染风险均较大,NH3-N冬季和夏季在竺山湾、西部沿岸区域污染风险较大,TP三季在竺山湾、西部沿岸区域污染风险较大;综合标识指数评价结果显示,东太湖、东部沿岸、贡湖区域水质较好,为Ⅲ类水,竺山湾和西部沿岸水体水质最差,为Ⅴ类水,且竺山湾和西部沿岸水体三季均处于重度污染状态。该研究可为太湖湖滨带水环境的生态恢复和标识指数应用的推广提供一定的科学依据。
Based on water quality data of littoral zone of Taihu Lake in december,2009,april and august,2010,the water quality were evaluated with the method of comprehensive water quality identification index,which is computed with the water quality factors of total nitrogen,total phosphorus,ammonia nitrogen,CODMn,dissolved oxygen.The results show that：Based on water quality data of littoral zone of Taihu Lake in december,2009,april and august,2010,the water quality were evaluated with the method of comprehensive water quality identification index,which is computed with the water quality factors of total nitrogen,total phosphorus,ammonia nitrogen,CODMn,dissolved oxygen.The results show that：Basic information on water quality indicators show that the NH3-N have large spatial variability in winter and spring,and the TP have large spatial variability in summer.The evaluation results of water quality using single identification water quality index showed that the contamination risk of water quality factor have significant spatial and temporal difference,the contamination risk of TN was higher than other water quality factors in winter and spring in the whole littoral zone,the contamination risk of NH3-N was higher than other water quality factors in winter and spring in Zhushan Bay and Western coastal Belt.The contamination risk of TP was higher than other water quality factors in three seasons in Zhushan Bay and Western coastal Belt ; the results of comprehensive Identification Index showed that the water quality was better in East Taihu Lake,Eastern costal Belt,Gonghu,and the water classification was Ⅲ,and in Zhushan Bay and Western coastal Belt the water quality was worst,the classification of this areas was Ⅴ,and the water body in these areas was in severe pollution status.The evaluation results provided a scientific basis for ecological restoration of aquatic environment in littoral zone of Taihu Lake.
出处
《中国环境监测》
CAS
CSCD
北大核心
2013年第5期91-97,共7页
Environmental Monitoring in China
基金
国家水体污染控制与治理科技重大专项(2009ZX07101-009)
关键词
水质标识指数
水质评价
湖滨带
太湖
water quality evaluation
water quality identification index
littoral zone
Taihu Lake
