Role and Protection of Dongting Lake

作     者：刘晓群 徐超 Xiaoqun LIU;Chao XU

作者机构：湖南省洞庭湖水利工程管理局湖南长沙410007 湖南省水利水电勘测设计研究总院湖南长沙410007 

基　　金：Supported by National Natural Science Foundation of China(51479215)~~ 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2014年第15卷第12期

页      码：2220-2225页

摘      要：Water and sediment in four-inlet river system and the water level at Chenglingji reflect the current relationship between Yangtze River and Dongting Lake. Since the flow in four-inlet river system is reduced gradually, the lake water level is also reduced, resulting in shrunk lake area, channelized lake, narrowed channel and reduced rfve beach. Facing the changed relationship the River and the Lake after the utilization of Three Gorges Project, the Chenglingji control engineering at the outlet of Dongting Lake and the dredging of four-inlet river system are car- ried out. Thus the roles of flood control （1.67x101~ m3） and water amount regulation （2.3~101~ m3） of Dongting Lake are fully played. The Dongting Lake plays compen- sating and scheduling roles in the flood control and water storage of the Three Gorges Reservoir. It can reduce a volume of 4.0x109 m3 of excess flood around Chenglingji. In addition, it can also provide a water supply of 5 000 m3/s to the lower reaches of Yangtze River during the dry season for about 30 d. The Dongt- ing Lake plays an important role in the stabilization of ecological environment in the watershed, the regional water resources security and the protection of Dongting Lake and Yangtze River.

主 题 词：Dongting Lake Compensation and scheduling Role Protection 

学科分类：082802[082802] 08[工学] 0828[工学-建筑类] 

D　O　I：10.3969/j.issn.1009-4229.2014.12.040

馆 藏 号：203158621...