排灌机械工程学报
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排灌机械工程学报  2014, Vol. 32 Issue (6): 487-493    DOI: 10.3969/j.issn.1674-8530.13.0171
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葛洲坝大江泄流对中华鲟产卵场空间分布特征的影响
王煜1, 戴会超1,2, 毛劲乔2, 彭秀华3
1.三峡大学水利与环境学院, 湖北 宜昌 443002; 2.河海大学水利水电学院, 江苏 南京 210098; 3.国电大渡河流域水电开发有限公司库坝管理中心, 四川 乐山 614900
Effect of Gezhouba Dajiang discharge on space distribution features of Chinese sturgeon spawning grounds
Wang Yu1, Dai Huichao1,2, Mao Jingqiao2, Peng Xiuhua3
1.College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, Hubei 443002, China; 2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 3.The Dam & Reservoir Ma-nagement Center of Guodian Dadu River Basin Hydropower Development Co. Ltd., Leshan, Sichuan 614900, China
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摘要 葛洲坝的修建阻隔了中华鲟上溯到上游产卵场的洄游通道,使其被迫在葛洲坝坝下4 km范围内形成新的产卵场,葛洲坝泄流对中华鲟产卵场的空间分布造成了一定影响.为了探明葛洲坝小出库流量且仅开启大江电厂发电泄流状况下,大江电厂发电泄流量的改变对坝下中华鲟产卵场产卵栖息适合度以及产卵场空间分布特性的影响,在构建中华鲟产卵场三维水动力数学模型及栖息地评价模型的基础上,对葛洲坝大江不同发电泄流量及不同机组泄流量工况下中华鲟产卵栖息地空间分布特征进行深入分析.结果表明,大江电厂单机泄流量增量小于200 m3/s时,可增加坝下中华鲟产卵栖息地适宜值,有利于中华鲟产卵繁殖;增加大江各机组的发电泄流量对坝下中华鲟产卵场空间分布具有一定的影响,各机组流量增量小于200 m3/s时,中华鲟产卵场面积增大,产卵场位置自右岸向左岸扩展,中华鲟获得更为广阔的产卵空间.
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王煜
戴会超
毛劲乔
彭秀华
关键词中华鲟   葛洲坝   空间分布特性   水生态   数值模拟     
Abstract: Gezhouba dam building blocks the migration route of the Chinese sturgeon, forcing to form new spawning grounds under the gezhouba dam 4 km range, therefore, Gezhouba discharge would affect the spatial distribution of the Chinese sturgeon spawning grounds. For studying the effect of Dajiang power plant discharge variation on the spatial distribution characteristics of Chinese sturgeon spawning habitat suitability under the condition of Gezhouba small discharge, a deep analysis and research was made on the basis of 3D hydrodynamic mathematical model and spawning habitat evaluation model of Chinese sturgeon spawning grounds. Results show that the increasing of Dajiang power plant unit discharge by within 200 m3/s can increase the Chinese sturgeon spawning habitat suitable values, which is beneficial to promote Chinese sturgeon naturally reproduce. The increase of each unit discharge in Dajiang power has a certain impact on spatial distribution of the Chinese sturgeon spawning grounds. When each unit flow increases less than 200 m3/s, the area of Chinese sturgeon spawning grounds would enlarge, and spawning location would expand from the right bank to the left bank, while Chinese sturgeon would get broader spawning space. The conclusion can provide reference for the ecological benefits of Gezhouba units under increasing capacity operation. 
Key wordsChinese sturgeon   Gezhouba   space distribution characteristics   water ecology   numerical simulation   
收稿日期: 2013-07-30;
基金资助:

国家973计划项目(2012CB417006);三峡大学人才科研启动基金资助项目(KJ2012B031)

通讯作者: 王煜(1976—),女,贵州榕江人,副教授,博士(wangyuhoney@163.com),主要从事水生态及环境研究.   
作者简介: 戴会超(1965—),男,河北保定人,教授,博士生导师(dai_huichao@263.net),主要从事水利水电工程运行和调控研究.
引用本文:   
王煜,戴会超,等. 葛洲坝大江泄流对中华鲟产卵场空间分布特征的影响[J]. 排灌机械工程学报, 2014, 32(6): 487-493.
WANG Yu-,DAI Hui-Chao-, et al. Effect of Gezhouba Dajiang discharge on space distribution features of Chinese sturgeon spawning grounds[J]. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(6): 487-493.
 
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