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捕捞努力量过量已给渔业生产带来了严重的后果,一是造成资源衰减,对持续捕捞量直接构成威胁。由于鱼类分布区域的局限性,种群数量和组成的变化在很大程度上取决于捕捞强度。捕捞过度,使某些资源群体濒临枯竭,其资源量少,繁殖能力低的,通常首先被破坏。近几年来,高经济价值的品种在渔获物中占的比重日益减少。二是导致了经济上的低效益。随着每个增加的单位捕捞量,总渔
The excessive fishing effort has had serious consequences for fishery production. One is the decay of resources and the direct threat to the quantity of persistent catches. Due to the limitations of the fish distribution area, changes in population numbers and composition are strongly dependent on fishing intensity. Excessive fishing, some of the resource groups on the brink of depletion, its small amount of resources, low reproductive capacity, usually the first to be destroyed. In recent years, the species with high economic value have been decreasing their share in catches. Second, it leads to economic inefficiencies. With each additional unit catch, the total catch