西北太平洋海洋净初级生产力与柔鱼资源量变动关系的研究

发布时间：2019-04-12 12:08

【摘要】：海洋初级生产力在海洋生态中扮演重要角色,其变化影响了海洋渔业的潜在产量。本文根据2004-2013年中国鱿钓组提供的西北太平洋柔鱼(Ommastrephes bartramii)捕捞数据和海洋遥感净初级生产力数据,研究了柔鱼冬春生西部群体资源量变动与净初级生产力的关系。结果发现,柔鱼渔场范围内净初级生产力在经度方向上呈明显的季节性变化,冬春季低,夏秋季高。捕捞月份7-11月对应的适宜净初级生产力范围分别为500~700mg/(m~2·d)(以碳计),500~800mg/(m~2·d),500~1 000mg/(m~2·d),500~800mg/(m~2·d)和300~500mg/(m~2·d),最适净初级生产力分别为700mg/(m~2·d),600mg/(m~2·d),700mg/(m~2·d),600mg/(m~2·d)和400mg/(m~2·d)。7-11各月最适净初级生产力平均纬度与捕捞努力量纬度重心呈显著正相关关系(P0.05),说明了捕捞努力量位置在渔场中不是随机分布,可能受最适净初级生产力的纬度分布的影响。柔鱼年间资源丰度与各年3月份净初级生产力以及7-11月份平均净初级生产力大小显著正相关(P0.05)。推测每年柔鱼资源量大小可能是由3月份产卵场海域和7-11月捕捞月份渔场净初级生产力水平交互作用的结果。研究表明,异常环境条件(厄尔尼诺和拉尼娜事件)对柔鱼产卵场和渔场的净初级生产力具有显著影响,但调控机制不同。
[Abstract]:Marine primary productivity plays an important role in marine ecology, and its changes affect the potential production of marine fisheries. Based on the (Ommastrephes bartramii) fishing data and ocean remote sensing net primary productivity data from 2004 to 2013 provided by Chinese squid fishing group, the relationship between the variation of population resources and net primary productivity in winter and spring in the western part of the Chinese squid fishing group was studied. The results showed that the net primary productivity in the range of soft fish fishing ground showed obvious seasonal variation in the longitude direction, which was low in winter and spring and high in summer and autumn. The suitable ranges of net primary productivity for July to November were 500~700mg/ (m2 路d) (in carbon), 500~800mg/ (m2 路d), 500 000mg/ (m2 路d), 500~800mg/ (m2 路d) and 300~500mg/ (m2 路d), respectively. The optimum net primary productivity was 700mg/ (m2 路d), 600mg/ (m2 路d), 700mg/) (m2 路d), respectively). 600mg/ (m2 路d) and 400mg/ (m2 路d). 7 / 11) showed a significant positive correlation between the mean latitude of the optimum net primary productivity and the center of gravity of the fishing effort (P0.05). The results show that the position of fishing effort is not randomly distributed in the fishing ground and may be affected by the latitude distribution of the optimum net primary productivity. There was a significant positive correlation between the annual resource abundance and the net primary productivity in March and the average net primary productivity in July-November (P0.05). It is suggested that the annual amount of soft fish resources may be the result of the interaction between the net primary productivity level of the fishing ground in July-November and the sea area of the spawning ground in March. The results show that abnormal environmental conditions (El Ni 帽 o and La Nina events) have significant effects on the net primary productivity of the spawning and fishing grounds, but the regulatory mechanisms are different.
【作者单位】：上海海洋大学海洋科学学院;远洋渔业协同创新中心;上海海洋大学国家远洋渔业工程技术研究中心;上海海洋大学大洋渔业资源可持续开发省部共建教育部重点实验室;
【基金】：国家863计划(2012AA092303) 国家科技支撑计划(2013BAD13B01) 上海海洋大学研究生创新能力培养——优秀研究生论文培育计划
【分类号】：S932.4

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