FLOW AND UPSTREAM MIGRATING BEHAVIOR OF LEUCISCUS HAKONENSIS AT EACH POOL OF POOL-AND-WEIR FISHWAY ACCOMPANYING DISCHARGE CHANGE
FLOW AND UPSTREAM MIGRATING BEHAVIOR OF LEUCISCUS HAKONENSIS AT EACH POOL OF POOL-AND-WEIR FISHWAY ACCOMPANYING DISCHARGE CHANGE
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塘堰鱼道各池箱根雅罗鱼的流量及上游洄游行为随流量变化
DOI：
10.2208/prohe.51.1291
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Hiroyasu Kobayashi
中科院分区：
文献类型：
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作者：
Atsushi Namihira;M. Goto;Hiroyasu Kobayashi
采用全尺寸水工模型，在伴随流量变化的池型和堰型鱼道的3个池中进行了哈konensis的流量结构测量和上游迁移行为观察。主要结果如下：1)池型和堰型鱼道中鱼类上游洄游的适宜流动条件是上游侧壁上方的水流沿壁向池底倾斜。2)在急流时，最上层池的主流流速比其他池大，因此，对于该池中的白鲑来说，不仅上游迁移的难度更大，而且在固定的地方也更难以停留。
Measurement of flow structure and observation of upstream migrating behavior of Leuciscus hakonensis at 3 pools of the pool and weir type fishway accompanying discharge change were conducted, using a full-size hydraulic model. Main results are shown as follows ; 1) Suitable flow condition for upstream migration of fishes in the pool and weir type fishway is that the flow over upstream side wall is plunging to the bottom of pool along the wall. 2) The flow velocity of the main current in the uppermost pool is larger than that of other pools at plunging flow, therefore, for the Leuciscus hakonensis in this pool, it is more difficult not only to migrate upstream but also to stay in an fixed place.