摘要
依据2015年5月、10月岱山岛水域渔业资源调查资料,研究岱山岛水域鱼类密度的时空分布,分析优势种、生物多样性等因素对鱼类分布的影响。结果表明:春季渔业资源生物3类23种,秋季3类21种。秋季的平均渔业资源重量密度和渔业资源尾数密度都明显小于春季。秋季的平均渔业资源尾数密度则是春季的1.6倍,春季的平均渔业资源重量密度为秋季平均重量密度的2.0倍。春季和秋季优势种均是东海沿岸常见种类。调查海域渔业资源生物多样性指数、丰度指数和均匀度分布水平偏低。
Based on the data from two oceanographic censuses in the Daishan Island waters in May and October of 2015,this paper discussed the spatial-temporal distribution of fish density involved in some impact factors such as advantages,as well as diversity.The results showed that there were23 kinds of 3 species in spring and 21 kinds of 3 species in autumn.The average weight and species density of fishery resources of spring were significantly higher than autumn.The mean spring fishery resources weight density was 1.6 times than autumn,and the mean fishery resources weight density of spring was 2.0 times than autumn.The dominant species of spring and autumn were common types of the East China Sea.The biodiversity 、abundance and the evenness index distribution were all low.
出处
《现代农业科技》
2016年第14期252-254,共3页
Modern Agricultural Science and Technology
基金
浙江省省级科技专项计划项目(2015C32001)
浙江省自然科学基金项目(LQ14B070002)
浙江省省属科研院所扶持专项(2016F30023)
