摘要
长江葛洲坝和三峡水利枢纽兴建后,中华鲟无法洄游到金沙江产卵栖息地,其繁殖受到较大影响。实地调查发现,中华鲟在葛洲坝下游建立了两个新的产卵繁殖地。为了研究适于中华鲟产卵繁殖的水深、流速、底质等条件,利用中华鲟繁殖期上下游水文站的实测水文和河道地形资料建立了河道水力模拟模型,并利用所建立的模型分析了中华鲟产卵地的水力条件,确定了产卵繁殖地水力条件与上游水利工程下泄流量之间的量化关系。中华鲟的产卵繁殖时间正好与三峡工程汛末蓄水时间一致,因此,研究成果为三峡水库蓄水和中华鲟的保护提供了科学依据。
After construction of Gezhouba and Three Gorges hydro-projects,the Chinese Sturgeon（Acipenser Sinensis Gray） can not migrate to its spawning habitat in upstream Jinsha River and its breeding is severely influenced.Field investigation discovered that the Chinese Sturgeon had established 2 new spawning and breeding zones in the downstream of Gezhouba hydro-project.In order to study the hydraulic condition suitable to the Chinese Sturgeon spawning and breeding,including water depth,flow velocity and bottom material etc.,a river channel hydraulic simulation model is established by the measured hydrological data of 2 hydrological stations in the upstream and downstream and bottom landform data.The hydraulic conditions at the spawning and breeding zones are analyzed by the model.The quantitative relation between the hydraulic condition of the spawning-breeding zones and discharge from the upstream projects is determined.Because the spawning and breeding time of Chinese Sturgeon is consistent with the impoundment time of Three Gorges Reservoir,so the study provides a scientific base for the reservoir impoundment and the Chinese Sturgeon protection.
出处
《人民长江》
北大核心
2013年第13期84-89,共6页
Yangtze River
基金
国家海洋局南海分局局长基金项目(1302)
国家海洋局海洋公益性项目(201105024)
国家自然科学基金青年项目(50909064)
