2019年秋冬季长荡湖渔获物资源调查

江苏省淡水水产研究所于2019年丰水期和枯水期对长荡湖渔业资源进行监测,以期掌握长荡湖渔业资源现状。3个监测点位共监测到渔获物30种,其中鱼类21种,龟鳖目1种,虾类3种,蟹类1种,螺类4种。鲤科种类最多,鱼类群落中,刀鲚(湖鲚)的数量最多,约占渔获物81.5%。鳙、鲢产量巨大,在渔获物产量中占有绝对优势,合计约75.9%。长荡湖鱼类生物多样性较低,目前的鱼类群落结构物种丰富度较低。需根据鱼类群落结构及时空分布特点对增殖放流工作进行调整,重塑生态环境,实现渔业资源的可持续利用,以促进长荡湖生态文明建设。

The fishery resources of Changdang lake in autumn and winter 2019

In order to understand the current situation of fishery resources of ChangdangLake, the fishery resources monitoring of Changdang Lake was conducted during the high and low water periods of 2019.30 species including 21 species of fish, one Testudinate, 3 species of shrimp, 1 kind of crab and 4 species of snails were obtained from three sampling sites. In the composition of catches, the species of Cyprinidaewas the most, while Coilianasus had the highest number, accounting for 81.5% of all catches. The yield of bighead and silver carp was huge, occupying an absolute advantage in the catch yield, about 75.9% in total. In present, the biodiversity, such as the species richness of fish in Changdang Lake is very low. The measures of enhancement and release should be adjusted for reshaping the ecological environment, realising the sustainable utilization of fishery resources, and promoting the construction of ecological civilization of Changdang Lake according to the characteristics of fish community structure and temporal and spatial distributionchara cteristics.