Spatiotemporal distribution and influencing factors of nitrogen and phosphorus in water column of Hanfeng Lake and Gaoyang Lake
LIU Shuang-shuang1,2, YUAN Xing-zhong1, WANG Xiao-feng3, ZHOU Li-lei1,2
1. Research Center for Ecological Restoration and Control of Water Level Fluctuating Zone in the Three Gorges Reservoir Area, School of Architectural and Urban Planning, Chongqing University, Chongqing 400030, China; 2. Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400030, China; 3. Chongqing Key Laboratory of Earth Surface Processes and Environmental Remote Sensing in Three Gorges Reservoir Area, School of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China
Abstract：Considering Hanfeng Lake dam running had the effect on nitrogen and phosphorus nutrient, sampling at multiple site were conducted from November in 2018 to October in 2019. Results showed that TN concentration of Hanfeng Lake ranged from 0.78 to 2.38mg/L, TP concentration ranged from 0.03 to 0.13mg/L; TN concentration of Gaoyang Lake ranged from 0.57 to 2.48mg/L, TP concentration ranged from 0.03 to 0.09mg/L, both of the lakes was on eutrophication. The concentration of nitrogen and phosphorus in Hanfeng Lake was related to water Chla, urban sewage discharge, water entertainment projects, agricultural non-point source pollution, industrial wastewater discharge, and particulate matter carried by surface runoff scouring. The concentration of nitrogen and phosphorus in Gaoyang Lake was not only affected by human production and life, but also cannot be separated from the joint action of soil erosion and water quality of the Yangtze River. The fluctuation of water level and water retention time may be the main influencing factors of the concentration of nitrogen and phosphorus in Gaoyang Lake.
刘双爽, 袁兴中, 王晓锋, 周李磊. 汉丰湖和高阳湖水体氮磷分布及影响因素研究[J]. 中国环境科学, 2021, 41(8): 3749-3757.
LIU Shuang-shuang, YUAN Xing-zhong, WANG Xiao-feng, ZHOU Li-lei. Spatiotemporal distribution and influencing factors of nitrogen and phosphorus in water column of Hanfeng Lake and Gaoyang Lake. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(8): 3749-3757.
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