论文部分内容阅读
在过去的25年中(1965～1990),世界捕捞渔业产量稳步增长。增长过程可分为三个阶段:上升流区和近岸渔业资源的开发带来60年代捕捞产量的增长;70年代产量的增加是由于秘鲁鳀鱼资源开发的结果;浅海中上层鱼类的开发使得80年代的捕捞产量继续保持缓慢增长势头。世界渔获物的大部分来自洲际大陆架(水深浅于200米的区域。通常都在小于50米水深的水域)。而其中的大部分来自北半球基础生产力高的海区、近北极区和上升流区。
Over the past 25 years (1965-1990), the world’s capture fisheries have seen steady growth. The growth process can be divided into three stages: the development of catchments in the upwelling areas and nearshore fisheries led to an increase in catch production in the 1960s; the increase in output in the 1970s was due to the exploitation of Peruvian anchovy resources; the development of upper-level fish in the shallow sea The fishing production in the 1980s continued its slow growth momentum. Much of the world’s catch comes from the intercontinental shelf (water depths of less than 200 meters, usually in waters less than 50 meters deep). Much of this comes from the highly productive sea areas in the northern hemisphere, the Near Arctic and upwelling areas.