Simulation of the preventive effect of ecological water replenishment on hydrophobia in Xiaofu River wetlands
JIA Rui-peng1, LI Gui-qiu2, DOU Ming1,2, WANG Cai3, LI Jia1
1. School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China; 2. College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China; 3. Nantong Branch of the Hydrology and Water Resources Survey Bureau of Jiangsu Province, Nantong 226000, China
Abstract：To determine impacts of ecological restoration on the Xiaofu River wetland, a two-dimensional water environment mathematical model based on the MIKE21 model was constructed, and the eutrophication hazard index H was used to assess water bloom prevention effects under eight different ecological restoration scenarios. The results from analyzing lake hydrodynamics and water quality evolution characteristics show that the model simulation error was smaller than 20%, and the determination coefficient for COD, ammonia nitrogen, total phosphorus, and total nitrogen was 0.8, 0.95, 0.94, 0.87 and 0.81, respectively. Under the same replenished water amount, a short-term water replenishment had superior effects, while under different water supply conditions, the large recharge water supply effect was better. Furthermore, under the same water supply conditions, the multi-point water supply was superior. An optimal ecological recharge scenario was the Option B8 which is a simultaneous upstream and downstream recharged with a total of 2 million m3 of water in 20 intervals.
贾瑞鹏, 李桂秋, 窦明, 王偲, 李佳. 生态补水对孝妇河湿地水华的预防效果模拟[J]. 中国环境科学, 2024, 44(1): 121-131.
JIA Rui-peng, LI Gui-qiu, DOU Ming, WANG Cai, LI Jia. Simulation of the preventive effect of ecological water replenishment on hydrophobia in Xiaofu River wetlands. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(1): 121-131.
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