A STUDY ON HYDROLOGICAL AND HYDRAULIC FEATURES OF TRACHIDERMUS FASCIATUS MIGRATION
Trachidermus fasciatus is a Catadromous species. The downstream of Aihe River is a natural habitat of Trachidermusfasciatus along the Yalu River. Generally, the pattern of hydrology and hydraulic has important impact on the life cycle of diadromous species, eg, spawning, overwinter, and feeding. The paper analyzes the hydrological and hydraulic features during the period which the young fish migrate upstream for feeding and adult fish migrate into sea for reproduction. According to the research, there is a regular process of discharge swelling and falling, which lasts for a relatively long period of time under both annual and inter-annual hydrologic condition. During swelling period, the daily average discharge varies frequently while being generally stable and lasts for more than 40 days and the average flow velocity is 0.4-0.6m/s; during falling period, the change of daily average discharge is smaller and the period with relatively stable water flow lasts about 30 days, the average flow velocity is about 0.4m/s.
Trachidermus fasciatus migration fish eco-hydraulics hydraulic features
Dongsheng Wang Xiuying Wang
China Institute of Water Resources and Hydropower Research, Beijing 100038, China
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
562-567
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）