最优捕鱼策略的动态综合模型研究

Synthetically Dynamic Model of Optimal Fish Catching Strategy

建立了一个关于对某种鱼的最优捕捞策略的动态综合模型。首先用微积分的方法求出各年龄组鱼群在 1a中各时刻的数量分布函数 x(t) ;然后 ,用差分法确定各年龄组鱼群数量之间的递推关系 ;再根据动态平衡的原理得出在满足持续捕捞条件下各年龄组鱼群数量与捕捞强度之间的关系 ;最后算出捕捞强度的范围 ,即得到了所求的最大捕捞强度。并在此基础上 ,找到一个适当的捕捞强度 。

In this paper,a synthetically dynamic model on optimal strategy of fish cathing was established.Firstly,by the method of calculus,the quantity function x(t) at any time of year for different ages of cluster fish was gotton;Secondly,using calculus of differences,the transitive relation between different ageas of cluster fish was abtained;Thirdly,by the principle of dynamic balance,at condition of continuous catching,the relation betwween x(t) and catching intensity was gained;At the end,a rational range of catching intensity and maximum catch intensity was gotter.Thus a proper catching intensity for maximum harvest was gained and the producing capability was not damaged.