2011—2021年江门新会区水库水质变化及土地影响的研究  

Study on Water Quality Evaluation of Reservoirs in Xinhui District, Jiangmen from 2011 to 2021 and Land Impact

作　　者：陈文乐[1] CHEN Wenle(Jiangmen Hydrological Branch,Hydrology Bureau of Guangdong Province,Jiangmen 529000,China)

机构地区：[1]广东省水文局江门水文分局,广东江门529000

出　　处：《广东水利水电》2025年第2期32-37,共6页Guangdong Water Resources and Hydropower

基　　金：广东省水利科技创新项目资助(编号:2020-33)。

摘　　要：使用3种指数法以及遥感资料解译评价了江门新会区14座水库2011—2021年水质状况、富营养状态及土地利用类型的影响,以期为水库水资源保护提供依据。数据表明:(1)单因素、综合污染指数、综合营养状态指数分别显示研究区水库水质以Ⅱ~Ⅲ类水为主,水质总体保持很好,水库处于贫营养至中营养;(2)水库重金属,酚类物质常年为Ⅰ类或者未检出,水质变化主要与TN、TP、氮磷比和COD_(Mn)等因素密切相关;(3)崖门水道下游水库的透明度、叶绿素a、溶解氧、Zn、Cu与土地类型存在一定的相关关系。以上结果反映研究的新会区水库群水质总体稳定较好,崖门水道周边的水库受周边工厂污水排放的影响导致水质出现超标,水体营养化有加重趋势。The impact of water quality eutrophication status and land use type of reservoirs in Xinhui District,Jiangmen from 2011 to 2021 was evaluated by using the single factor method,the comprehensive trophic status index method and remote sensing interpretation,in order to provide a basis for the protection of reservoir water resources.The data showed that:①The water quality of the reservoirs in the study area was mainly class II to III,and the water quality was maintained very well,and the reservoir as a whole was in the category of poor trophic to medium nutrition;②The heavy metals and phenolic substances in the reservoir were class I or not detected all year round,and the water quality changes were mainly closely related to TN,TP,nitrogen-phosphorus ratio and CODMn;③There was a certain correlation between the transparency,chlorophyll a,dissolved oxygen,Zn,Cu and land type of the reservoir in the downstream of Yamen waterway.The above results reflect that the water quality of the reservoirs in Xinhui District is generally stable and good,and the water quality of the reservoirs around Yamen Waterway exceeds the standard due to the influence of sewage discharge from surrounding factories,and the nutrient of water bodies has an aggravating trend.

关 键 词：新会 水库水质 时空变化 土地类型 

分 类 号：TV697[水利工程—水利水电工程]