| 变化环境下洞庭湖换水特征演变分析 |
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| 引用本文： | 史璇,肖伟华,段玮娟,赵志轩,王旭,郝彩莲. 变化环境下洞庭湖换水特征演变分析[J]. 长江流域资源与环境, 2012, 21(Z2): 100-131 |
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| 作者姓名： | 史璇 肖伟华 段玮娟 赵志轩 王旭 郝彩莲 |
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| 作者单位： | （1.东华大学环境科学与工程学院,上海 201620；2.中国水利水电科学研究院水资源所,北京 100038;; 3.流域水循环模拟与调控国家重点实验室,北京 100038；4.湖南省水利水电勘测设计研究总院,湖南 长沙 410007；5.北京科技大学土木与环境工程学院,北京 100083 |
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| 基金项目： | 国家自然科学基金创新研究群体基金项目(50721006) |
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| 摘 要： | 洞庭湖是长江中下游重要的吞吐型湖泊。换水频率和换水量等换水特征是其水文条件的重要表征。下垫面条件变化、水利工程的建设运行等，很大程度上影响了湖泊地形和来水条件等，使洞庭湖换水特征发生很大变化。研究1960s以来洞庭湖换水特征的历史演变，特别对三峡工程后换水量差值进行研究，有助于得到湖泊换水特性的历史演变特征，并对今后湖泊水量控制提供参考。分析了1961～2008年洞庭湖换水频率变化，1990s前换水频率的降低趋势一定程度上表征湖泊的自然衰退趋势，1990s后衰退趋势趋缓；而三峡蓄水运行后与90年代以来的换水量差值为14647亿m3，枯、丰水期分别为4834亿m3和9814亿m3
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| 关 键 词： | 洞庭湖 换水量 换水频率 江湖关系 三峡工程 |
ECOLOGICAL WATER DEMAND OF THE DONGTING LAKE BASED ON RIVER-LAKE WATER EXCHANGE BALANCE |
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| SHI Xuan,XIAO Wei-hua,YAN Deng-hua,DUAN Wei-juan,ZHAO Zhi-xuan,WANG Xu,HAO Cai-lian. ECOLOGICAL WATER DEMAND OF THE DONGTING LAKE BASED ON RIVER-LAKE WATER EXCHANGE BALANCE[J]. Resources and Environment in the Yangtza Basin, 2012, 21(Z2): 100-131 |
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| Authors: | SHI Xuan XIAO Wei-hua YAN Deng-hua DUAN Wei-juan ZHAO Zhi-xuan WANG Xu HAO Cai-lian |
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| Affiliation: | 1,2,3(1.Environmental Science and Engineering Department,Donghua University,Shanghai 201620,China; 2.Water Resources Department,China Institute of Water Resources and Hydropower Research, Beijing 100038,China;3.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,Beijing 100038,China;4.Hunan Hydro & Power Design Institute,Changsha 410007,China; 5.Department of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | The Dongting Lake is the second largest fresh water lake in our country,which is important for taking in sending out water in the middle and lower reaches of the Yangtze River.The change of underlying surface conditions and the application of water conservancy projects influences the geography and coming water conditions,which consequently causes the great changes of exchange water frequency and exchange water amount.Based on the analysis of the change of exchange water frequency from 1961 to 2008,in particular contrasting the exchange water amount of the 1990s and that after the Three Gorges Project operation,the change of the exchange characteristic of the Dongting Lake was studied.By calculating,the exchange water of the Dongting Lake reduced 14647 billion,the amount of dry season was 4834 billion and that of flood season was 9814 billion.As a result,the change of exchange characteristic of the Dongting Lake should be seriously noticed in the process of water conservancy projects. |
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