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于2010年6月和8月采用底拖网对长兴岛周边海域的渔业资源进行了调查。结果表明:该海域有游泳动物38种,其中鱼类21种,虾类7种,蟹类6种,头足类4种;6月优势种为焦氏舌鳎、口虾蛄、日本蟳、长蛸、许氏平鲉和大泷六线鱼,8月优势种为矛尾鰕虎鱼、口虾蛄、黄鮟鱇、日本蟳、焦氏舌鳎、葛氏长臂虾、斑纹鰤子鱼和细纹鰤子鱼。生物多样性评价结果表明,物种多样性指数从1992年的2.53降到现在的1.83,渔业资源群落结构发生了较大变化,种类减少,种的均衡性变差。
In June and August 2010, the bottom trawling network was used to investigate the fishery resources in the waters around Changxing Island. The results showed that there were 38 species of swimming animals in this area, including 21 species of fish, 7 species of shrimps, 6 species of crabs and 4 species of cephalopods. The dominant species of June were Leucanthemum gigas, Long 蛸, Xu flat 鲉 and Otaki six-wire fish, August dominant species of lagomorph goby, mouth shrimp 蛄, 鮟 鮟 鱇, Japanese 蟳, tongue 鳎 Giao, Ge long prawn, striped 鰤子 fish And fine-grained clam fish. The result of biodiversity assessment shows that the index of species diversity has dropped from 2.53 in 1992 to 1.83 now, and the community structure of fishery resources has undergone great changes, the species has decreased, and the species balance has worsened.