应用非平衡产量模型对卡塔尔渔业的分析

Application of a Non-Equilibrium Surplus-Production Model on Qatar Fishery Data

剩余产量模型是鱼类种群动力学的主要模型之一。本文应用 1个非平衡产量模型分析了卡塔尔渔业。结果表明当前鱼类生物量是最大持续产量时生物量的 1/4,当前捕捞死亡率是最大持续产量时捕捞死亡率的 2倍。经估算最大持续产量是 782 6t( 80 %置信区间为 6767～ 7993t) ,最佳捕捞努力量是 2 4 8艘船 ( 80 %置信区间为 2 2 5～ 2 86艘 )。

Surplus production models are among the main models for fish population dynamics. This paper applies a non-equilibrium production model to the fishery of Qatar.The results show that the current fish biomass is only a quarter of the biomass corresponding to the maximum sustainable yield. The current fishing mortality is double that of the maximum sustainable yield. The estimated maximum sustainable yield is 7 826 metric ton (the 80% confidence interval being 6 767～7 993 ton), the optimum fishing effort is 248 boats (the 80% confidence interval being 225～286 boats).