Identify the seasonal differences in water quality and pollution sources between river-connected and gate-controlled lakes in the Yangtze River basin

文献类型： 外文期刊

第一作者： Bai, Yang

作者： Bai, Yang;Zou, Binchun;Ma, Zhifei;Xu, Jinying;Wang, Yinuo;Wu, Daishe;Zhu, Jie;Li, Liangzhong

作者机构：

关键词： River-connected lakes; Gate-controlled lakes; Water quality; Pollution sources; Seasonal variation

期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：4.9； 五年影响因子：5.6 ）

ISSN： 0025-326X

年卷期： 2024 年 206 卷

页码：

收录情况： SCI

摘要： The river-connected Dongting Lake (DT) and Poyang Lake (PY), and the gate-controlled Taihu Lake (TH) and Chaohu Lake (CH) are the four important lakes in the Yangtze River Basin. The comprehensive Water Quality Index (WQI), the Eutrophication Integrated Index (TLI(Sigma)), and the Positive Matrix Factorization (PMF) model were employed to evaluate water quality and the contribution of pollution sources for these lakes. The results show that WQI for all lakes indicated generally good water quality, with DT scoring 73.52-86.18, the highest among them. During the wet season, the eutrophication degree of river-connected lake was medium, and that of gate-controlled lakes was high. The surface runoff and agricultural non-point sources are the main pollution sources for both types of lakes, but their impact is more pronounced in gate-controlled lakes during the wet season. The study provides evidence support for scientific understanding of water quality problems and management strategies in these areas.

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