Nutrient status of overlying water and sediment of West Lake, Hangzhou, China
Qingjun Fang,
Yadong Tang,
Jiying Zhu,
Huan Liao,
Xiaopei Du,
Guoliang Bai,
Hang Yang,
Zhenbin Wu,
Yi Zhang
Affiliations
Qingjun Fang
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
Yadong Tang
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
Jiying Zhu
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
Huan Liao
School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China
Xiaopei Du
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
Guoliang Bai
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
Hang Yang
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China; Corresponding authors at: State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Zhenbin Wu
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
Yi Zhang
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding authors at: State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
A comprehensive investigation of the physicochemical properties of overlying water and sediments in Hangzhou West Lake, China was conducted. A wide range of crucial physical parameters were analyzed, revealing significant spatial and seasonal differences. Total nitrogen (TN), total phosphorus (TP), and chemical oxygen demand (COD) concentrations in overlying water met the Class III limits (TN ≤2 mg/L, TP ≤0.2 mg/L, COD ≤20 mg/L) of the Environmental Quality Standard for Surface Waters (GB3838–2002), indicating relatively good overall water quality. However, concerns were raised regarding potential eutrophication, particularly evident during summer with explosive chlorophyll-a growth in certain lake areas like WH (266 mg/L) and XLH (239 mg/L). Lakes receiving direct diversion showed lower TN and TP versus non-diverted lakes. This research provides valuable insight into the complex nutrient dynamics and conditions of West Lake, improving understanding of lake ecosystem management and sustainable conservation strategies.
