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采取社会调查、渔获物调查及现场直捕3种方法对1999年4月至2000年5月不同地点的飞云江香鱼在肥育生长、产卵、幼鱼越冬、幼鱼上溯等4个阶段中的香鱼资源进行调查与分析,对飞云江香鱼资源现状以及“浙江珊溪水利枢纽工程”对飞云江香鱼资源的影响进行评估。结果表明,2000年飞云江香鱼为1999年的1/4～1/3,衰退是明显的;2000年上溯的幼香鱼约为1000尾,其资源量已十分稀少,濒临灭绝。其原因主要是由水质污染、酷捕滥捞、采捕鳗苗和采挖河沙造成的。预计洄游型香鱼在水库大坝建成后将在飞云江流域消失,但库区中也有可能出现陆封型香鱼种群。若考虑建造香鱼的人工养殖场,进行香鱼的全人工育苗和养成,可弥补飞云江香鱼自然资源的不足。
Three methods of social investigation, catches investigation and on-site direct catching were used to study the effects of four methods on fattening, spawning, juvenile fish and juvenile fish in different locations from April 1999 to May 2000 Stage of the sweetfish resources to investigate and analyze the current situation of the fragrant fish Feiyun River and the “Zhejiang Sanxi Water Conservancy Project” on the Feiyun River arowana resources assessment. The results showed that in the year of 2000, the ayu fish in Feiyun River ranged from 1/4 to 1/3 in 1999, and the recession was obvious. In the year 2000, the number of juvenile sweetfish was about 1000, its resources are very scarce and endangered. The reason is mainly caused by the pollution of water quality, the catching of fishing, the exploitation of eel seedlings and the excavation of river sand. It is expected that migratory sweetfish will disappear in Feiyunjiang River after the completion of reservoir dam, but there may also be land-seal-type sweetfish population in the reservoir area. If you consider the construction of artificial fish farms, the whole artificial nursery stock raising and development, can make up for the lack of natural resources Feiyun River ayu.