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三峡水库运行后对洞庭湖防洪和生态的思考
引用本文:童潜明. 三峡水库运行后对洞庭湖防洪和生态的思考[J]. 国土资源科技管理, 2002, 19(3): 1-6
作者姓名:童潜明
作者单位:湖南省国土资源厅,湖南长沙,410007
摘    要:三峡水库运行后,对洞庭湖区的显著作用:一是泥沙源将大幅度减少;二是降低了防洪压力;三是三峡水库听内下泄量的增减对湖区生态环境有利亦有弊。阉实的资料论证了三峡水库运行后,洞庭湖将成为饥型湖泊,而未淤积湖内的泥沙将转移淤积到城陵矾至汉口河段,使江水、湖水顶托加剧,从而产生断的变化。此外,建议恢复嘉鱼县九宫湖-樊口这条一万年前的古长江河道,作为三峡水库的配套工程。

关 键 词:三峡水库 洞庭湖 泥沙淤积 构造沉降 湿地 生态 古长江河道 防洪
文章编号:1009-4210(2002)03-0001-06
修稿时间:2001-12-31

Management of Land Reflections on Flood Control and Ecology of Dongting Lake After Operation of the Three Great Gorges Reservior
TONG Qian-ming. Management of Land Reflections on Flood Control and Ecology of Dongting Lake After Operation of the Three Great Gorges Reservior[J]. Scientific and Technological Management of Land and Resources, 2002, 19(3): 1-6
Authors:TONG Qian-ming
Abstract:Three effects on Dongting Lake will b e prominent after the operation of th e Three Great Gorges Reservior,that is,firstly,greatly reduce the source of silt,le ngthening the life of the lake;secon dly,decrease the pressure of flood c ontrol while exerting a limited effect on catastrophic floods;finally,the annual increase or decrease of the reservior' s downflow will have both advantange s and dis-advantages for the eco -environment of the lake.With abundant materials the author demonstrates that after t he operation of the reservior Dongting Lake will be a starved lake.Meanwhile,silt not deposited in the lake will be transferred to the reach es from Chenglingji to Hankou,leading to new changes.The p aper also suggests the recovery of an cient course of Changjiang River fro m Jiugonghu to Fankou as an auxiliary project with the Thre e Great Gorges Reservior.
Keywords:the Three Great Gorges Reservior  Do ngting Lake  silt deposit  structur e subside  flood control  wetland  e cology  ancient course of Changjiang River
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