常熟市主要城市湖泊水质及水体富营养化现状评价  

Evaluation of water quality and eutrophication of major urban lakes in Changshu City

作　　者：汪薇 吴超 吴晓东 林贵英 杨久芸 罗璐 WANG Wei;WU Chao;WU Xiao-dong;LIN Gui-ying;YANG Jiu-yun;LUO Lu(College of Urban and Environmental Sciences,Hubei Normal University,Huangshi 435002,Hubei,China)

机构地区：[1]湖北师范大学城市与环境学院,湖北黄石435002

出　　处：《湖北农业科学》2022年第19期47-54,共8页Hubei Agricultural Sciences

基　　金：湖北省教育厅科学技术研究计划项目(Q20182502);湖北省自然科学基金青年项目(2018CFB321)。

摘　　要：为了解江苏省常熟市主要城市湖泊的水质情况,于2018—2019年实地监测了尚湖和昆承湖水质并对其进行评价。结果表明,尚湖和昆承湖的水体透明度(SD)、总氮(TN)浓度、可溶性总氮(TDN)浓度和可溶性总磷(TDP)浓度差异显著(P<0.05),总磷(TP)和溶解性有机碳(DOC)浓度差异极显著(P<0.01)。两个湖泊水质呈较明显的季节变化,尚湖春季和秋季水质优良,夏季和冬季有恶化趋势;昆承湖春季和夏季水质较差,秋季和冬季污染加剧。基于单因子指数评价显示,尚湖和昆承湖主要污染因子相同,均为TN和TP,尚湖全年为Ⅲ类水,昆承湖为劣Ⅴ类水。内梅罗指数范围尚湖为0.50~0.87,全年属于尚清洁,昆承湖为1.37~2.31,全年属于轻度污染;综合营养指数范围尚湖为45.78~49.02,全年为中营养状态,昆承湖为54.31~59.23,全年为轻度富营养状态。The water quality of Shanghu Lake and Kuncheng Lake in Changshu City of Jiangsu Province was monitored and evaluated in 2018—2019 to understand the water quality of major urban lakes.The results showed that the differences of water transparency(SD),total nitrogen(TN),total dissolved nitrogen(TDN)and total dissolved phosphorus(TDP)between the two lakes were significant(P<0.05),and the differences of total phosphorus(TP)and dissolved organic carbon(DOC)between the two lakes were extremely significant(P<0.01).There were obvious seasonal changes of water quality in two lakes,and the water quality of Shanghu Lake was good in spring and autumn,but deteriorated in summer and winter,while that of Kuncheng Lake was poor in spring and summer,and the pollution was aggravated in autumn and winter.Based on single factor index evaluation,the main pollution factors in Shanghu Lake and Kuncheng Lake were the same,both of which were TN and TP,and the water quality of Shanghu Lake all year was class Ⅲ,while Kuncheng Lake was inferior class V.The Nemero index of Shanghu Lake ranged from 0.50 to 0.87,indicating that the lake was relatively clean all year,while that of Kuncheng Lake ranged from 1.37 to 2.31,indicating that the lake was slightly polluted all year.The comprehensive nutrient index of Shanghu Lake ranged from 45.78 to 49.02,indicating a moderate vegetative state all year,while that of Kuncheng Lake ranged from 54.31 to 59.23,indicating a mild eutrophication state all year.

关 键 词：水体富营养化 城市湖泊 尚湖 昆承湖 评价方法 常熟市 

分 类 号：X524[环境科学与工程—环境工程]