成年种群 meaning in English
adult population
Examples
- A1 , a2 denotes the rate of as hunting fot the populations x1 , x2 , f is the functional response ; . in [ 25 ] , a new prey - predator modle with stage - structured has been provided in which the predator might reduce the death rate by feeding on the preys
文[ 25 ]提出了一个新的阶段结构捕食被捕食模型，其中考虑捕食者的成年种群通过捕食减少了自身的死亡率，从而加大了种群持续生存的可能。 - Such model is as follows where xi ( t ) , xm ( t ) denotes the density of the immature and the mature population predator a " at time t respectively ; y ( t ) denotes the density of the prey population y at time t . the mature predator of x can reduce tins death rate ; by hunting and feeding on the prey } "
所示模型如下：其中， x _ m是捕食者的成年种群， x _ i是捕食者的幼年种群，且幼年不能捕食； y是被捕食者； e ~ ( - )是由幼年到成年的转化的概率；是成熟期。 - The model in chapter 1 describes that each of the two patches has the immature and mature predator populations , and there is another prey population only in one patch ; the model in chapter 2 describes that there are immature and mature predator populations only in one patch , and the mature predator can disperse between the two patches , and there is a prey population on the patch which has no immature population . because of the season ' s influence , it is reasonable to assume all the coefficients are periodic and almost periodic
在第一章中，讨论了在两个斑块环境下，每个斑块都含有捕食者的幼年和成年种群，且在其中一个斑块上存在另一个被捕食者种群；在第二章中，讨论了仅在一个斑块上含有捕食者的两阶段结构，而成年的捕食者可以在两个斑块之间扩散，且在没有幼年种群的斑块上，存在捕食者的明显的食饵。