Variation Characteristics of Water Environmental Capacity in Poyang Lake under the Scheduling of Three Gorges Reservoir

作     者：OU Ming-liang1,2,ZHOU Wen-bin2,3,HU Chun-hua2,3 1.College of Civil and Environment Engineering,East China Institute of Technology,Fuzhou 344000,China 2.Key Laboratory of Environment and Resource Utilization in Poyang Lake,Ministry of Education,Nanchang 330031,China 3.Institute of Environmental and Chemical Engineering,Nanchang University,Nanchang 330031,China 

出 版 物：《Meteorological and Environmental Research》 (气象与环境研究（英文版）)

年 卷 期：2011年第2卷第3期

页      面：46-48,52页

学科分类：12[管理学] 1204[管理学-公共管理] 081504[工学-水利水电工程] 083305[工学-城乡生态环境与基础设施规划] 08[工学] 0815[工学-水利工程] 0833[工学-城乡规划学] 

基　　金：Supported by National Key Project of Water Pollution Control and Management (2008zx07526-008-03) International Science and Technology Cooperation Project (2006DFB91920) National Key Technology R & D Program in the 11th Five-year Plan of China (2007BAB23CO2) National Natural Science Foundation of China (40672159) Technical Assistance Project of China's Economic Reform Implementation (TCC5jxspyhzxh09-03) 

主　　题：Three Gorges Project Poyang Lake Water environmental capacity China 

摘      要：[Objective] The aim was to study the variation characteristics of water environmental capacity in Poyang Lake under the scheduling of Three Gorges Reservoir.[Method] Choosing chemical oxygen demand (COD),total nitrogen (TN) and total phosphorus (TP) as the control indexes of pollutants in Poyang Lake,the variation characteristics of water environmental capacity in Poyang Lake under the scheduling of Three Gorges Reservoir were analyzed based on the water environment mathematical models of organic compounds and nutrients.[Result] After the operation of Three Gorges Project,high water level in Poyang Lake lasted for a long time in flood season when Three Gorges Reservoir increased discharge volume,while water level went down obviously with the accelerating of recession flow when reservoir decreased discharge volume to store water,so Three Gorges Project had obvious effects on the hydrological regime of Poyang *** 2009,when Three Gorges Reservoir stored water,the water environmental capacity of COD,TN and TP in Poyang Lake in October decreased by 14.0%,15.4% and 15.4% compared with those before operation,while they increased by 3.64%,4.88% and 4.88% in August when reservoir discharged water to prevent flood.[Conclusion] The study could provide scientific foundation for the water pollution control and water environment management of lakes.