生物多样性与种群数量动态研究中的几个问题探讨

探讨了生物多样性与种群数量动态研究中的几个问题。植物多样性影响害虫种群动态的生态学机制主要有天敌假说和资源集中假说 ,而集合种群动态研究中数学模型一直起主导作用 ,这一理论对景观生态学和保护生物学的研究均具有重要意义。扰动在不同连续状态下通过产生缀块的时空镶嵌在构建生态系统过程中发挥主要作用 ,且中等干扰程度能保持高的多样性。遗传多样性研究所经历的形态学水平、染色体水平、生理生化水平和分子水平 4个阶段研究方法各有其优缺点且不能互相替代。对生物多样性保护的研究可增加不同范围内生物多样性 ,提高种群和生态系统功能的稳定性。

Several problems between biodiversity and dynamics of population quantity

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.