摘要
湖泊流域水质差异是由流域中不同斑块个体受自然作用和人类活动影响的结果。采用单因子指数法和地表水环境质量定性评价方法对荆州长湖流域北湖库区(庙湖)和南湖库区(海子湖)水体水质现状进行了评价和分析。结果表明:荆州长湖流域水污染物质量浓度随水期变化明显,丰水期水质状况最佳,枯水期最差;长湖流域海子湖水质总体优于庙湖水质;各监测点化学需氧量(COD)和氨氮(NH-N)浓度在枯水期、丰水期、平水期存在显著差异(P <0.05),总磷(TP)浓度总体上无明显差异(P> 0.05)。工业、生活等点源污水,以耕地和鱼塘养殖为主的农业非点源以及天然降水量和径流量是影响水质的主要因素。
Differences in water quality in lake watershed are the consequence of the influences of nature and human activities on individual patches of the watershed. The single factor index method and the qualitative evaluation method of surface water environmental quality were used to evaluate and analyze the current status of water quality in the North Lake reservoir area(Miao Lake) and the south Lake reservoir area(Haizi Lake) in Changhu Lake watershed in Jingzhou. The results showed that: the concentration of water pollutants changes obviously with the water season. The water quality is the best in the wet season, and the worst in the dry season;The water quality is generally betterin Haizi Lake than in Miao Lake.The mean concentrations of COD and NH-N at each monitoring point are significantly different in the dry season, the wet season, and the flat water season(P<0.05). There was no significant difference in the mean concentration of total phosphorus(P>0.05). Industrial, domestic and other point source sewage, agricultural non-point sources such as farmland and fish pond aquaculture, and natural precipitation and run off water are the main factors affecting water quality.
作者
冯威
刘松
杨立群
周溪滢
任艳玲
周鑫
孙文
FENG Wei;LIU Song;YANG Li-qun;ZHOU Xi-ying;REN Yan-ling;ZHOU Xin;SUN Wen(Jinan Ecological and Cultural Tourism District Branch of Jingzhou Municipal Ecological Environment Bureau,Jingzhou 434000,Hubei,China;Jingzhou Ecological Environment Monitoring Center of Hubei Provincial Ecological Environment Department,Jingzhou 434000,Hubei,China;S hashi District branch of Jingzhou Municipal Ecological Environment Bureau,Jingzhou 434000,China,Hubei;S chool of Arts,Southwest University,Chongqing 400700,Sichuan,China;College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,Gandu,China)
出处
《湿地科学与管理》
2022年第5期37-40,共4页
Wetland Science & Management
基金
荆州市科技创新智库2021年度立项课题(JZCXZK202111)项目资助。
关键词
水质评价
特征分析
长湖流域
Water quality assessment
Influencing factors
Changhu watershed
