捕食者—猎物功能响应模型研究

本文通过分析在捕食的情况下猎物种群的平均绝对增长速率与捕食效应的关系以及捕食者的捕食平均绝对速率与猎物密度的关系,建立了捕食者-猎物功能响应的一般模型: 其中,A为捕食者与猎物行为常数,f(H_t)为待定函数。 在上述模型的基础上讨论了在捕食速率与猎物密度无关和有关时的功能响应行为。 通过对上面模型的分析,笔者认为功能响应模型按Holling的Ⅰ、Ⅱ、Ⅲ型响应曲线相应划分很不方便。建议按“捕食速率与猎物密度无关或有关”两个类型划分。并认为Ⅲ型模型在昆虫中也能得到较广泛的应用。

STUDY ON MODELS FUNCTIONAL RESPONSE OF PREDATOR TO PREY

Through anal sis of the relationships between the mean absolute rate of pre population increase and the predator, effeciency and between the mean absolute attack rate (dHa/dt) and the prey population densit (Ht), a common modle has been constituted for the functional response of predator to prey:wherein A is the behavioural constant of predator and pre ; f(Ht) is the function to be defined.( 1 )If the attack late is independent of the pre densit , then f(Ht) = constant, and thus the functional response mode...