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    陳爽,陳新軍.氣候變化對東北大西洋漁獲物組成、多樣性和營養級的影響[J].海洋學報,2020,42(10):100-109
    氣候變化對東北大西洋漁獲物組成、多樣性和營養級的影響
    Effects of climate change on catch composition, diversity of catch and mean trophic level in the Northeast Atlantic Ocean
    投稿時間:2018-10-20  修訂日期:2019-01-02
    DOI:10.3969/j.issn.0253-4193.2020.10.010
    中文關鍵詞:  東北大西洋  氣候變化  漁獲物組成  漁獲多樣性  營養級
    英文關鍵詞:Northeast Atlantic Ocean  climate change  catch composition  diversity of catch  mean trophic level
    基金項目:國家自然科學基金項目(NSFC41876141);海洋二號衛星地面應用系統項目(HY2A-HT-YWY-006)。
    作者單位E-mail
    陳爽 上海海洋大學 海洋科學學院,上海 201306  
    陳新軍 上海海洋大學 海洋科學學院,上海 201306
    青島海洋科學與技術試點國家實驗室 海洋漁業科學與食物產出過程功能實驗室,山東 青島 266237
    農業農村部 大洋漁業開發重點實驗室,上海 201306
    國家遠洋漁業工程技術研究中心,上海 201306
    大洋漁業資源可持續開發教育部重點實驗室,上海 201306 
    xjchen@shou.edu.cn 
    摘要點擊次數: 1155
    全文下載次數: 4213
    中文摘要:
          東北大西洋是世界上重要的捕撈海域,氣候變化對該海域捕撈產生了重要的影響。本文基于聯合國糧農組織所提供的1982-2016年東北大西洋漁獲產量數據,對該海域漁獲物組成、多樣性、平均營養級及主成分變化特征進行時間序列上的分析,并結合東北大西洋海域氣候、環境因子,應用廣義可加模型探究漁獲物組成與氣候變化之間的關系。結果顯示:漁獲物多樣性的變化總體上呈下降趨勢,2002-2010年間處于較低水平;平均營養級在2002年之前呈平緩下降的趨勢,2002年之后開始波動上升,相關性分析表明這兩個指標與海域環境因子的變化較為相關。對漁獲物組成進行主成分分析顯示,第一主成份變化的方差解釋率達到35.3%,且與海域氣候、環境因素有較高的相關性,第一主成分變化能夠較好地表征氣候影響下漁獲物組成變化的情況。廣義可加模型分析結果顯示,漁獲物組成變化的影響因素按解釋率由高到低分別為:海表溫度、海平面高度、鹽度、海冰和北大西洋濤動指數。該研究有助于認識氣候變化對海洋漁業資源及其結構組成的影響。
    英文摘要:
          Global climate change has a profound impact on the world fisheries. Recently, the composition of catch in Northeast Atlantic Ocean has changed significantly. Based on the catch data in the Northeast Atlantic Ocean from 1982 to 2016 provided by the United Nations Food and Agricuture Organization, the diversity of catch, mean trophic level and the variation of principal component were analyzed in time series. Finally, combined with climate and environmental factors (sea surface temperature, SST; sea surface salinity, SSS; sea surface height, SSH; Sea Ice Concentration, SIC; North Atlantic Oscillation, NAO; Arctic Oscillation, AO; Atlantic Multidecadal Oscillation, AMO) in the Northeast Atlantic Ocean, the relationship between catches composition and climate change was explored by generalized additive model (GAM). The results showed that the diversity generally presented a declining trend, it was at a relatively low level during 2002 to 2010. The mean trophic level decreased slowly before 2002, then began to rise sharply. The correlation analysis showed that the changes of these two indicators were related to the environmental factors. The principal component analysis of catch composition showed that the variance of the first principal component was 35.3%, and it also has a close relationship with climatic and environmental factors, which could characterize the change of catch structure under the influence of climate. The results of GAM analysis showed that the orders of the contribution to structure change of catches were in sequence of SST, SSH, SSS, SIC and NAO.
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