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引用本文:夏玉宝,王华,何新辰,袁伟皓,曾一川,闫怀宇,张晓兰,涂予新.太湖流域典型滨湖河网水动力与水质时空异质性.湖泊科学,2021,33(4):1100-1111. DOI:10.18307/2021.0412
Xia Yubao,Wang Hua,He Xinchen,Yuan Weihao,Zeng Yichuan,Yan Huaiyu,Zhang Xiaolan,Tu Yuxin.Spatiotemporal heterogeneity of hydrodynamic forces and water quality in typical lakeside river networks in Taihu Basin. J. Lake Sci.2021,33(4):1100-1111. DOI:10.18307/2021.0412
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太湖流域典型滨湖河网水动力与水质时空异质性
夏玉宝1,2, 王华1,2, 何新辰1,2, 袁伟皓1,2, 曾一川1,2, 闫怀宇1,2, 张晓兰1,2, 涂予新1,2
1.河海大学环境学院, 南京 210098;2.河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 南京 210098
摘要:
基于中国太湖梅梁湾东部的无锡市滨湖区河网29个监测点在丰水期、平水期和枯水期的流速和水质监测数据,将河网分为梁溪河、曹王泾、骂蠡港、城市河网南区以及城市河网北区5个区域,对流速和典型水质指标的时空异质性进行分析,结合主成分分析和相关性分析,得到各区域水动力与水质现状及其成因.结果显示:梁溪河和曹王泾的水质条件和水动力条件较好,多数水质因子与流速表现出了强相关性;骂蠡港的水质和流速区域变化明显,表现弱相关性;城市河网北区和南区的流速较缓,河道污染负荷较大,流速与水质因子之间的相关性较低.通过在滨湖河网开展流速和水质的野外监测,分析流速对于河网水环境的实际效果,验证不同水质指标与流速之间的响应关系,为滨湖河网区水质保护和科学的水污染治理技术提供基础支撑.
关键词:  河网  水动力  流速  营养盐  时空异质性  太湖  梅梁湾
DOI:10.18307/2021.0412
分类号:
基金项目:国家自然科学基金项目(51779075)和中央高校基本科研业务费项目(2017ZX07203002-01)联合资助.
Spatiotemporal heterogeneity of hydrodynamic forces and water quality in typical lakeside river networks in Taihu Basin
Xia Yubao1,2, Wang Hua1,2, He Xinchen1,2, Yuan Weihao1,2, Zeng Yichuan1,2, Yan Huaiyu1,2, Zhang Xiaolan1,2, Tu Yuxin1,2
1.College of Environment, Hohai University, Nanjing 210098, P. R. China;2.Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, P. R. China
Abstract:
Based on the flow velocity and water quality monitoring data in three periods: flood season, dry season and normal season from 29 river network monitoring stations in Wuxi Binhu region, which is located in eastern part of Meiliang Bay, Lake Taihu in China, the river network can be divided into five regions. After analyzing the spatial and temporal heterogeneity of flow velocity and the typical water quality indexes and combining the principal component and correlation analysis, the current situation and causes of different regional hydrodynamic and water quality can be understood. The results show that the water quality and hydrodynamic conditions in Liangxi River and Caowangjing River are good, and most of the water quality factors show strong correlation with the flow rate. The regional variation of water quality and flow velocity in Mali Port is obvious, showing weak correlation. In the north and south of the urban river network, the flow rate is slow, the river pollution load is heavy, and the correlation between the flow rate and water quality factors is low. Through the field monitoring of flow velocity and water quality in the Binhu River network, the actual effects of flow velocity on the water environment of the river network can be analyzed, and the response relationship between different water quality indexes and flow velocity have been verified, which provides basic support for the water quality protection and scientific water pollution treatment technology in the Binhu River network area. Thus, it is of great significance to improve the water ecological environment.
Key words:  River network  hydrodynamic  velocity  nutrient  spatiotemporal heterogeneity  Lake Taihu  Meiliang Bay
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