太湖流域“零点”行动的环境效果分析  

Environmental Effects of "Zero" Actions in Taihu Basin

作　　者：黄文钰[1] 杨桂山[1] 许朋柱[1] 

机构地区：[1]中国科学院南京地理与湖泊研究所,南京210008

出　　处：《湖泊科学》2002年第1期67-71,共5页Journal of Lake Sciences

基　　金：中国科学院区域 (Ⅳ - 990 5 );中国科学院知识创新项目 (KZCX2 - 311);国家自然科学重点基金 (4 98310 70 );中国典型流域湖沼系统资源环境动态过程及优化管理特别支持项目共同资助

摘　　要：太湖流域点源污染治理的“零点”行动对减轻太湖及流域水质的污染具有积极的作用 .削减COD量占入湖COD总量的 19.1% ,1998年主要入湖河道COD监测浓度年平均值比1997年平均值下降 2 6 .7% ,1998年太湖湖水COD年平均浓度比 1997年的平均浓度下降了 2 1.2 % ,这在一定的程度上遏制了太湖水质恶化的趋势 .但若从根本上改善太湖水质 ,尚需结合流域地区内其它污染治理措施 。Since the 1960s, the water pollution is pricked up in Taihu Lake. The water quality is decreased about one degree per 10 years, 70% of the rivers and lakes are polluted, and 80% of river water quality can not fit the need of national quality standard of Class Ⅲ of surface water. At present, the whole lake' water is eutrophication, and part of the lake is heavy eutrophication. The 'Zero' actions have good effect on lightening the water pollution in Taihu Lake, and keep within limits the water quality decreasing in some degree. The COD concentration of input rivers was decreased 26.7% averagely from the year of 1997 to 1998. Among the input rivers, the river of COD concentration maximum decrease was at Wutangqiao, -39.6%; the river of COD concentration minimum decrease was at Hexi, -1.8%. Otherwise, comparison with COD concentrations of input rivers in July, 1998, and 1997, the average total decrease was -14.8%. In 1998, the decrease was -39.8% in September, -31.9% in November, and -20.5% in December, respectively. The COD quantity from watershed to Taihu Lake was decreased by 19.1%. The average COD concentration in Taihu Lake was decreased by 21.2%. After the 'Zero' actions, in the year of 1999 and 2000, the water qualities in Taihu Lake are deteriorated again. Thus, to control the water quality radically, other countermeasures are needed except 'Zero' actions.

关 键 词：“零点”行动 水环境 太湖流域 点源污染 水质 治理 COD监测 

分 类 号：X524[环境科学与工程—环境工程] P343.3[天文地球—水文科学]