Ecological influence of dam construction and river-lake connectivity on migration fish habitat in the Yangtze River basin, China
Ecological influence of dam construction and river-lake connectivity on migration fish habitat in the Yangtze River basin, China
复制标题
长江流域大坝建设和河湖连通对洄游鱼类栖息地的生态影响
DOI：
10.1016/j.proenv.2010.10.207
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Yang, Zhifeng
中科院分区：
文献类型：
--
作者：
Yi, Yujun;Yang, Zhifeng
由于水坝和障碍物的阻碍，栖息地碎片化严重影响了水生动物群。许多洄游鱼类的产卵场所丧失，生长繁殖受到影响。湖泊相连的长江是中国最重要的淡水渔业区。长江四大鲤鱼（YFMCS）是该地区最典型的洄游鱼类。它们在河流中繁殖，在湖泊中生长。长江与洞庭湖之间的支流是这些鱼类洄游的通道。由于修建水坝和障碍物，一些原来的通道不再使用。截至目前，江湖之间仅存在4条航道，即俗称“三出口”的宋磁口、太平口、大池口和城陵矶入口。通过三个出口的引水量（DWV）和引水百分比（PDW）反映了长江与洞庭湖之间的关系。本文讨论了大坝建设引起的河湖关系变化以及对洄游鱼类的影响。分析了长江中游及洞庭湖的DWV与鱼苗产量的关系、PDW与YFMCS占鱼类总渔获量的百分比、监利站鲤鱼鱼苗的DWV和通量、DWV与YFMCS的产量。结果表明，长江上修建的堤坝和屏障威胁到了该地区的一些鱼类，特别是洄游鱼类。河湖的连通程度决定了迁徙鱼类的生长和繁殖，YFMCS的产量随着DWV的增加而增加，水利工程对鱼类的繁殖有重要影响。为了减少水电工程对生态的影响，水库管理尤其是产卵季节应结合生态需求。
Habitat fragment owning to obstruct of dams and barriers badly affect the aquatic faunas. Many spawning sites of migration fishes are lost, and their growth and reproduction are affected. The Yangtze River with connected lakes is the most important fresh water fishery area in China. The Yangtze's four major carp species (YFMCS) are the most typical migration fish lived in this area. They reproduce in river and grow in lake. Distributaries lies between the Yangtze River and Dongting Lake are the passages for these migration fishes. Due to the construction of dams and barriers, some original passages were out of use. Up to now, only four channels exist between the river and lake, there are Songcikou, Taipingkou and Ouchikou normally called “three outlets”, and Chenglingji inlet. Diverted Water Volume (DWV) and the Percentage of Diverted Water (PDW) through the three outlets reflect the relationship between the Yangtze River and the Dongting Lake.The variation of river-lake relation caused by dam construction, and the effect on migration fishes are discussed in this paper. The relationship of DWV and fry output in middle reach of the Yangtze river and the Dongting Lake, PDW and the percentage of the YFMCS in a total catch of fish, DWV and flux of carp fry at the Jianli station, DWV and yield of the YFMCS were analyzed. The results show that dams and barriers constructed on the Yangtze River threaten some fish species in this area, especially the migration fishes. The connectivity degree of river and lake decide the growth and reproduction of emigration fishes, the yield of the YFMCS increase by the DWV increase, and hydraulic project have important influence on reproduction of fishes. In order to reduce the ecological influence of hydropower projects, reservoir management especially in spawning season should integrate ecological demand.
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影响因子：
2.4
作者：
J. Santos;M. T. Ferreira;A. Pinheiro;J. Bochechas
通讯作者：
J. Santos;M. T. Ferreira;A. Pinheiro;J. Bochechas
DOI：
--
发表时间：
1993-02
期刊：
--
影响因子：
--
作者：
G. Sanchez-Sierra
通讯作者：
G. Sanchez-Sierra
影响因子：
10.1
作者：
Keesing, F
通讯作者：
Keesing, F
影响因子：
1.4
作者：
T. Koel
通讯作者：
T. Koel
影响因子：
2.2
作者：
Garcia, Alex;Jorde, Klaus;Parra, Oscar
通讯作者：
Parra, Oscar