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The effect of luring fish is one of the key factors affecting fish passing efficiency in the entrance area of fish-passing facilities. Proposed a new optimization idea of side-channel drop-flow to lure fish. The upstream water was replenished to the area outside the fishway entrance as drop-flow. With the help of auxiliary facilities such as cantilever plate, the attractive flow was formed in the horizontal orientation. Take the fishway project of Shaping I Hydropower Station as example, a large scale physical model was established to demonstrate and optimize the scheme, and the flow pattern near the entrance of the fish-passing facility were analyzed, and the possibility of attracting fish was discussed. The experimental results show that the one-dop scheme is favorable for attracting the migratory fish in the horizontal orientation, with the flow velocity of 0.3-0.5 m/s, and the information of flow pattern is rich in the entrance area, which is suitable for fish aggregation.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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