中文摘要：

20世纪以来，我国农村城镇化和农业设施化的快速发展，造成农业景观的急剧变化以及农田生境的破碎化。国内外十分重视这种景观变化对农业生态系统功能和生物多样性以及害虫种群控制的影响。本文针对国内外有关农业景观变化和生境破碎化对昆虫与天敌群落组成、多样性及种群序列变化的影响研究进行系统论述，着重介绍农业景观变化对害虫种群控制的原理和作用机理，分析景观结构与农田生物多样性，及寄主-寄生物、猎物-捕食者、植物害虫-天敌的相互关系，以及影响这种关系的景观因子作用力的模拟，旨在揭示农业景观变化对害虫种群动态的潜在影响，提示了今后害虫治理研究的热点问题。

英文摘要：

Since the 20th century, there has been a rapid charlge in agricultural landscape and fragmentation of farmlands, resulted from expansion of urbanization and installation of agriculture in China. Effects of the change on biodiversity and integrated pest management in agroecosystems have become one of central issues in conservation biology and agroecology. This article introduced the meaning and applications of landscape structure and habitat fragmenta- tion influencing community components, biodiversity and population dynamics of insects. The cardinal principles and the mechanisms of landscape complexity and succession in integrated pest management, including the effects of agri cultural landscape on movement of insect and its natural enemies, foraging strategies, and host-parasite/prey-predator interactions, and their models, were elucidated emphatically. As indicated above, it aims to reveal the potential population explosion and the control ways and methods of insect pests with the rapid change of landscape structure, and to discuss about the hot spots of future study in this field.