草原景观下昆虫群落及种群对生境破碎化的反应

摘要/Abstract

摘要： 生境破碎化是制约生物多样性重要的“瓶颈”之一。本研究在已有资料的基础上,论述了影响生物群落结构和种群动态过程的生境破碎化的生物反应特征,以及破碎化生境对生物多样性和种间关系的影响机理及基本理论假说,重点对草原景观下有关昆虫群落结构、丰富度、种群数量与动态、种间关系及群落次生演替等与生境破碎化关系的试验研究进行归纳总结, 提出了在草原环境下进行破碎化生境与昆虫群落和种群发生关系研究的问题及优势条件,指出了种间关系和次生演替与生境斑块格局的关系是草原生物多样性保护研究的关键之一。

Abstract: It has become increasingly clear that the occurrence of species and their population densities, as well as population dynamics, trophic interactions, and community structure within a habitat, may depend on processes of large spatial scales. The destruction and fragmentation of habitats has become one of the major threats to biodiversity. At first, the characteristics of habitat fragments (patches) in relation to possible processes and patterns of insect communities and their mechanisms for influencing diversity and biotic interactions were introduced based on literature surveys. The effects of habitat fragmentation on the structure, richness, and interactions of insect communities, and population dynamics with special emphasis on grassland landscapes were summarised and sorted in order. Experiments on the characteristics and dominant natural conditions in fragmented habitats and investigations in grassland habitats were conducted. This study showed that the relationships between patterns of fragmented habitats and biotic interactions, and secondary succession series in grassland landscapes were the key to the question of biodiversity conservation.

中图分类号:

Q968
S81

贺达汉, 赵紫华, 张大治. 草原景观下昆虫群落及种群对生境破碎化的反应[J]. 草业学报, 2009, 18(6): 235-241.

HE Da-han, ZHAO Zi-hua, ZHANG Da-zhi. Responses of insect communities and populations on habitat fragmentation in grassland landscapes[J]. Acta Prataculturae Sinica, 2009, 18(6): 235-241.

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