【作者】 张导； 张琰； 宋学宏； 朱江；

【Author】 ZHANG Dao~1 ZHANG Yan~1 SONG Xue-hong~2 ZHU Jiang~2 (1.Suzhou Agricultural Products Quality and Environmental Monitoring Station,Suzhou 215006,China;2.School of Basic Medicine and Biological Sciences,Suzhou University,Suzhou 215123.)

【机构】 苏州市农产品质量与环境监测站； 苏州大学基础医学与生物科学学院；

【摘要】 在跟踪监测东太湖水环境质量基础上,对苏州环太湖15个乡镇或街道农业面源污染源进行面上调查、实地调查。综合国内外尤其是太湖地区研究成果,进行农业面源污染评价与分析。结果表明:（1）东太湖水域TN、TP、COD_Mn和Chl-a的平均值分别为0.817mg/L、0.074mg/L、4.054mg/L和0.0176mg/L,属轻度富营养化湖泊,其中,TP可能是蓝藻暴发的限制因子。（2）各类污染源对苏州环太湖农业面源污染贡献大小依次为:生活污水>>种植业>水产养殖业>畜禽养殖业。本研究提出了苏州环太湖农业面源污染的控制对策,为实现我国制定的2010年太湖达中等营养水平及主要出入湖河流达到GB3838-88中Ⅱ类水质的保护目标提供基本思路。更多还原

【Abstract】 Based on the monitoring of water quality in East Taihu Lake,the broad investigation and on-the-spot investigation on the agricultural non-point source pollution were carried out in 15 townships and towns around Lake Taihu in Suzhou city,and the agricultural non-point source pollution was assessed and analyzed by taking together other research results about Taihu Lake.The results showed that:（1） the average values for TN,TP,COD_Mn,and Chl-a in water of East Taihu Lake were 0.817mg/L,0.074mg/L,4.054mg/L,and 0.0176mg/L,respectively,indicating a low eutrophication level in the lake,and TP content was probably a limiting factor for outbreaks of blue-green algae;（2） The pollution sources were listed as follows in the order of importance based upon their contribution to the agricultural non-point source pollution around Lake Taihu: municipal waste water>>crop-plantation>aquaculture>livestock and poultry raising.Some strategies for controlling agricultural non-point source pollution around Lake Taihu were proposed in this study,which may provide clues to realize the goal of making Lake Taihu to be moderate under eutrophic conditions by 2010,and making the major rivers meet the classⅡwater quality criteria under China National Standard GB3838-88.更多还原