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南大洋有鳍鱼类渔业平均营养级的长期变动

朱国平1,2,3,4**   

  1. 1上海海洋大学海洋科学学院, 上海 201306; 2国家远洋渔业工程技术研究中心, 上海 201306; 3大洋渔业资源可持续开发省部共建教育部重点实验室, 上海 201306; 4远洋渔业协同创新中心, 上海 201306)
  • 出版日期:2014-06-10 发布日期:2014-06-10

Long-term changes in the mean trophic level of the finfish fishery in the Southern Ocean.

ZHU Guo-ping1,2,3,4**   

  1. (1College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China; 2National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China; 3The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China; 4Collaborative Innovation Center for National Distantwater Fisheries, Shanghai 201306, China)
  • Online:2014-06-10 Published:2014-06-10

摘要:

利用南极海洋生物资源养护委员会(CCAMLR)提供的数据,结合Fishbase所提供的相关鱼种营养级,分析了1970—2009年南大洋有鳍鱼类渔业的平均营养级(TL-i)变动情况。结果表明:南大洋有鳍鱼类渔业TL-i趋势较为明显,可分为1970—1991、1992—2009年两个阶段;1970—1991年,TL-i处于较低的水平(3.23~3.60),整体上呈下降趋势;1992—2009年,TL-i明显处于一个较高的水平(3.82~4.02);渔获平均渐进体长的变化趋势与平均营养级基本上保持一致;1970年的渔业均衡指数(FiB)最高,1997年之后FiB指数基本上处于稳定状态。
 

关键词: 飞播林, 碳密度, 马尾松, 分配特征

Abstract:

Based on the data provided by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) and the relevant information on the trophic level of selected fish species from Fishbase (www.fishbase.org), this paper analyzed the temporal fluctuation on the mean trophic level (TL-i) of the finfish fishery in the Southern Ocean from 1970 to 2009. The results indicated that two stages were observed in the TL-i of the finfish fishery in the Southern Ocean, i.e., the TL-i had a decreasing trend with a lower level (3.23-3.60) from 1970 to 1991; however, the TL-i (3.82-4.02) were at a higher level from 1992 to 2009. The mean asymptotic length of catch had a similar trend to the mean trophic level. The fishinginbalance (FiB) index was the highest in 1970 and maintained at a stable level after 1997.

 

Key words: Pinus massoniana, carbon density, distribution characteristics, aerially seeded plantation