Several problems between biodiversity and dynamics of population quantity
生物多样性与种群数量动态研究中的几个问题探讨

Several problems between biodiversity and dynamics of population quant ity are stated.The ecological mechanisms between plant diversity and quantity d ynamics of pest population mainly are natural enemies hypothesis and resources c entralization hypothesis while in studies of metapopulation theory,mathematical models play leading roles.This theory makes much sense in studies of both landsc ape ecology and protective biology.Disturbance also plays a primary role during the course of forming an ecosystem through producing temporal and spatial incrusta tion under different and continuous states ,and medium degree of disturbance ca n preserve a high diversity.Genetic diversity researches have experienced four s tages of morphological level,chromosome level,physiological an d biochemical level,and molecular level.The four methods both have their advanta ges and disadvantages and can not be replaced by each other.Biodiversity within different ranges can be increased by protection of biodiversity,and can increase the stability of the population and function of ecosystem.