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基于GAM模型的阿拉伯海鲐鱼渔场分布与环境关系

杨胜龙*,范秀梅,伍玉梅,周为峰,王斐,吴祖立,张忭忭,樊伟   

  1. (中国水产科学研究院东海水产研究所, 农业农村部远洋与极地渔业创新重点实验室, 中国水产科学研究院渔业资源与遥感信息技术重点开放实验室, 上海 200090)
  • 出版日期:2019-08-10 发布日期:2019-08-10

The relationship between the fishing ground of mackerel (Scomber australasicus) in Arabian Sea and the environment based on GAM model.

YANG Sheng-long*, FAN Xiu-mei, WU Yu-mei, ZHOU Wei-feng, WANG Fei, WU Zu-li, ZHANG Bian-bian, FAN Wei   

  1. (Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture and Rural Affairs; East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Key and Open Laboratory of Remote Sensing Information Technology in Fishing Resource, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China).
  • Online:2019-08-10 Published:2019-08-10

摘要: 基于2016—2017年中国印度洋围拖网生产数据以及同期的海表温度、叶绿素、表层海流和海面高度数据,采用广义加性模型(Generalized Additive Model, GAM)建立了围网单位捕捞努力量渔获量(catch per unit effort, CPUE)对海洋环境的非线性响应模型,分析了阿拉伯海鲐鱼(Scomber australasicus)渔场分布与海洋环境关系。结果表明:空间因子和环境因子对阿拉伯海鲐鱼渔场有显著影响,GAM模型的方差解释率为30.1%;印度洋季风对鲐鱼CPUE影响大,鲐鱼CPUE在印度洋东北季风高,在夏季季风低;全年阿拉伯海鲐鱼围网渔场主要分布在60°E、13°N—15°N斜向椭圆区域;模型表明,鲐鱼渔场适宜海表温度为26~28 ℃,叶绿素浓度0.2~0.5 mg·m-3,海面高度0.2~0.4 m;影响鲐鱼渔场的因子按重要性依次为海面高度、经纬度、海表温度和叶绿素浓度。

关键词: 日本落叶松, 土壤微生物, 土壤养分, 土壤酶活性, 典范对应分析

Abstract: The relationship between mackerel (Scomber australasicus) catch per unit effort (CPUE) and sea surface environmental factors of the Arabian Sea were evaluated by using general additive model (GAM) based on the satellitebased oceanographic data of sea surface temperature, sea surface chlorophyll-a concentration, sea surface current  and sea surface height  as well as purse seine catch data of Chinese fishing boats from 2016 to 2017. The results showed that the percentage of deviance explained by GAM was 30.1%. The fishing grounds were affected by the Indian Ocean monsoon. The CPUE of mackerel was higher in winter monsoon and lower in summer monsoon. The CPUE of mackerel mainly located in 65°E and 13-15°N. The optimum sea surface temperature was 26-28 ℃. The appropriate chlorophyll concentration range and sea surface height were 0.2-0.5 mg·m-3  and 0.2-0.4 m, respectively. The relative importance of the several variables affecting the CPUE of mackerel was in the order of sea surface height, longitude and latitude, sea surface temperature, and chlorophyll concentration.

Key words: Larix kaempferi , soil microorganism, soil nutrient, soil enzyme activity, CCA.