| 长山群岛海洋渔业资源的平均营养级变化特征 |
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| 引用本文： | 孙才志,曹威威,肖春柳.长山群岛海洋渔业资源的平均营养级变化特征[J].海洋通报,2019,38(1):87-95. |
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| 作者姓名： | 孙才志 曹威威 肖春柳 |
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| 作者单位： | 辽宁师范大学 海洋经济与可持续发展研究中心,辽宁 大连 116029;辽宁师范大学 城市与环境学院,辽宁 大连 116029;辽宁师范大学 城市与环境学院,辽宁 大连 116029;海南大学 热带农林学院,海南 儋州 571737;辽宁师范大学 城市与环境学院,辽宁 大连,116029 |
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| 基金项目： | 教育部人文社会科学重点研究基地重大课题 （16JJD790021） |
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| 摘 要： | 根据长山群岛 1965-2016 年渔业统计资料，分析长山群岛海域主要捕捞渔获物产量、平均营养级 （Mean trophic level， MTL）、渔业均衡指数 （Fishing in balance index，FiB） 年际变化，探讨其海洋渔业资源利用状况，并利用小波分析方法研究52年来渔获物 MTL 周期变化特征。研究表明： （1） 长山群岛捕捞产量、MTL 和 FiB 指数呈阶段性变化； （2） 长山群岛渔业资源开发经历初期开发、扩张捕捞、过度捕捞、资源破坏等四个阶段，渔业资源环境正在逐渐恶化；（3） 受人类捕捞活动影响，MTL 在 15~19 年和 24~34 年两种时间尺度下呈周期波动，30 年为第一主周期，17 年为第二主周期。长山群岛渔业资源破坏日益严重，未来几年平均营养级将呈下降趋势。为防止渔业资源进一步衰退，应加强捕捞活动管理力度，落实海洋渔业资源保护制度；完善预警机制，构建海洋渔业资源监测系统；同时应积极调整长山群岛渔业产业结构，提高资源产出效率.
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| 关 键 词： | 海洋渔业资源 平均营养级(MTL) 渔业均衡指数(FiB) 小波分析 长山群岛 |
| 收稿时间： | 2018/9/3 0:00:00 |
| 修稿时间： | 2018/9/28 0:00:00 |
Characteristics of variation in mean trophic level of marine fishery resources in Changshan Archipelago |
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| SUN Cai-zhi,CAO Wei-wei and XIAO Chun-liu.Characteristics of variation in mean trophic level of marine fishery resources in Changshan Archipelago[J].Marine Science Bulletin,2019,38(1):87-95. |
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| Authors: | SUN Cai-zhi CAO Wei-wei and XIAO Chun-liu |
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| Institution: | Center for Studies of Marine Economy and Sustainable Development, Liaoning Normal University, Dalian 116029, China;College of Urban and Environment, Liaoning Normal University, Dalian 116029, China,College of Urban and Environment, Liaoning Normal University, Dalian 116029, China;Institute of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China and College of Urban and Environment, Liaoning Normal University, Dalian 116029, China |
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| Abstract: | This study analyzed the interannual variation in the catch, mean trophic level (MTL) and fishing in balance index (FiB) of captured species, discussed the utilization of marine fishery resources in the waters of the Changshan Archipelago using its fishery statistics from 1965 to 2016. The Periodic variation characteristics of the MTL of catches during the past 52 years were studied by wavelet analysis method. The results showed that: (1) the catch, MTL and FiB of the Changshan Archipelago changed at different stages. (2) The exploitation of fishery resources has gone through four stages: initial exploitation, expansionary fishing, overfishing and resource destruction, and the resources and environment are getting worse. (3) Affected by human fishing activities, the MTL of catch fluctuates periodically at 15~19 years and 24~34 years of time scales which 30 years is the first main period and 17 years is the second main period. At present, the damage of fishery resources in Changshan Archipelago is becoming more and more serious, and the MTL will decline over the next few years. In order to prevent further decline of fishery resources, the government should strengthen management of fishing activities and implement marine fishery resources protection system. The early warning mechanism and the monitoring system of marine fishery resources should be constructed and improved. At the same time, the fishery industry structure of the Changshan Archipelago should be adjusted actively to improve the efficiency of resource output. |
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| Keywords: | marine fishery resources mean trophic level fishing in balance index wavelet analysis Changshan Archipelago |
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