林火与病虫害的相互作用

火是森林生态系统演替过程中的一种自然干扰因子, 在促进森林发育、维持生物多样性特别是景观多样性方面起着积极的作用。森林中的多种干扰间有关联性, 火灾、虫害和病原体之间存在着复杂的相互作用。文中综述了火干扰与森林病虫害的相互影响。火灾会引起森林组成和景观的变化, 进而影响森林病虫的生存与发生条件。病虫害通过改变可燃物特性及其分布, 影响火烧频度和强度。这一研究领域的未来发展趋势是更注重火与病虫害之间的量化关系, 研究结果将为开展科学的林火管理提供理论依据, 实现森林经营的可持续。

Interactions of Forest Fires and Plant Diseases and Pests

Fire is a natural disturbance factor in forest ecosystem succesion,which plays a positive role in promoting forest development and maintaining biodiversity and especially landscape diversity.The disturbances in forests have some associations,for example,fires,pests and pathogens have complex interactions.The paper reviewed the interactive impact between fire disturbance and forest diseases and pests.Fire can cause changes in forest composition and landscape,thereby affecting the conditions for survival and occurrence of pests.Invasive species and forest biological hazards will change the community composition and affect the fire frequency and intensity.The future researches will pay more attention to quantitative relationship among a variety of disturbances.Scientific fire management can play a useful role of the fire and promote the forest sustainability.