渔业资源的变动模型与捕捞策略

Variation Model of Fishery Resources and Fishing Strategy

为描述鱼群中鱼量在复杂因素影响下的变动规律,建立了定量化的数学模型,并给出定率捕捞、分段减率、集中峰率等3种可操作的捕捞策略,提供了在可持续生产的条件下,寻求最大收获量及其决策数据的计算公式与搜索算法。该算法简便易行,既适用于单年生产,也适用于多年承包。最后,对各种捕捞策略做出了定性评价。

This paper sets up a quantitative mathematical model for the description of fish stocks under complex circumstances;it gives three kinds of operational fishing strategies for the actual fishing operations,such as fixed-rate fishing,sub-rate reduction,the central peak rate.And it also puts forward formula and searching maths methods of seeking for the maximization of the harvest of its decision-making data under sustainable production.The algorithm is simple,not only for production in a single year,but also applies to the many years of contracting.Finally,it makes a qualitative evaluation of the various fishing strategies.