Save reservoirs of humid subtropical cities from eutrophication threat

Liu, Meijie1; Lei, Xiaoyu1; Zhou, Yanyan1; Gao, Jingsi2; Zhou, Yun1; Wang, Linlin3; Zhu, Jia2; Mao, Xian-zhong1

2021-08-01

10.1007/s11356-021-15560-4

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH   影响因子和分区

0944-1344

1614-7499

Reservoir water is the most important freshwater resource for many cities, especially in densely populated humid subtropical areas. Economic growth, population increase, and urbanization have been putting reservoir water of Shenzhen (China), a humid subtropical city, under severe threat of eutrophication and water supply shortage. In this study, we focused on an upstream reservoir of Shenzhen and established a 3-dimensional hydrodynamic-ecological model to investigate the water dynamics and nutrient budget. Tributaries to the reservoir were identified as the greatest contributors to nitrogen and phosphorus loads. Zones with weak flows and high nutrient concentration have high risks of causing blooms. Several mitigation measures were proposed, including improving flow by adding additional water exit locations in the reservoir, reducing nutrients in tributaries, and enhancing algal predation, and were evaluated with the established model. The strategies combining hydrodynamic improvement and phosphorus reduction were suggested to decision makers and government managers for short-term management. However, for future water safety, excessive nitrogen is a potential danger. This study provides a modeling framework that can be applied to anthropogenic-influenced reservoirs elsewhere.

Reservoir Eutrophication Nutrient budget Mitigation strategy Ecological model

SCI

英语

其他

National Natural Science Foundation of China[42076150] ; Shenzhen Science and Technology Innovation Program of China["JCYJ20160608165926763","KJYY20180206180737010","6020320003K"] ; Dedicated Fund for Promoting High-Quality Economic Development in Guangdong Province of China (Marine Economic Development Project)[GDOE[2019]A45]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000680791700006

SPRINGER HEIDELBERG

ENVIRONMENT/ECOLOGY

Web of Science

1.Tsinghua Univ, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China
2.Shenzhen Polytech, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen 518055, Guangdong, Peoples R China

Liu, Meijie,Lei, Xiaoyu,Zhou, Yanyan,et al. Save reservoirs of humid subtropical cities from eutrophication threat[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2021.

Liu, Meijie.,Lei, Xiaoyu.,Zhou, Yanyan.,Gao, Jingsi.,Zhou, Yun.,...&Mao, Xian-zhong.(2021).Save reservoirs of humid subtropical cities from eutrophication threat.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.

Liu, Meijie,et al."Save reservoirs of humid subtropical cities from eutrophication threat".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021).