广东深圳大鹏半岛海域秋季渔业资源群落结构分析

Analysis of Community Structure of Fishery Resources in Autumn in the Waters of Dapeng Peninsula,Shenzhen of Guangdong

[目的]研究深圳大鹏半岛海域秋季渔业资源群落结构。[方法]通过分析2015年11月深圳大鹏半岛海域的拖网调查数据,利用多元统计方法对该海域秋季渔业资源群落进行了划分,并比较了各群落的生物多样性、均匀度及优势种等结构特征。[结果]大鹏半岛海域渔业资源资源量略有下降,可将其划分为3个区域,其中位于北部海域的区域资源密度最高,但物种丰富度指数、多样性指数及均匀度指数最低;位于南部海域的区域具有较低的资源密度及较高的物种丰富度指数、多样性指数及均匀度指数;中部海域的区系均处于中间水平。[结论]大鹏半岛海域秋季渔业资源逐渐衰退,应针对各群落特点进行生态修复。研究结果可为大鹏半岛渔业资源的保护和管理提供参考。

[Objective] To study the community structure of fishery resources in autumn in Dapeng Peninsula of Shenzhen.[Method]The data of trawl survey in the waters of Dapeng Peninsula of Shenzhen in November of 2015 were analyzed. The communities of fishery resources in autumn in this sea area were classified by using multivariate statistical method. And the biodiversity,evenness,dominant species and other structure characteristics were various communities were compared.[Result] The amount of fisheries resources in the waters of Dapeng Peninsula slightly declined. The waters of Dapeng Peninsula could be divided into three regions,the northern sea area had the highest density of regional resources,but the species richness index,diversity index and evenness index were minimum. The southern sea area had lower resource density and higher species richness index,diversity index and evenness index. And the central sea area was at the middle level. [Conclusion] The fishery resources in autumn in the waters of Dapeng Peninsula gradually declined,so the ecological restoration should be carried out according to the characteristics of each community.