生态学杂志2013，Vol.32Issue(7)：1888-1895,8.
森林采伐方式对森林景观的影响模拟——以大兴安岭呼中林区为例
Simulation of the effect of forest harvest mode on forest landscape: A case study in Huzhong forest region of Daxing' anling Mountains, China
摘要
Abstract
The effect of disturbances on the changes of forest landscape is a long-term process.Traditional observation methods are hard to explore the long-term effect of disturbances on forest landscape at large spatial scale,while model simulation is a commonly used method at present.In this paper,a spatially explicit landscape model,LANDIS,was used to simulate the long-term (300 years) dynamics of forest landscape under four different forest harvest scenarios,i.e.,no cutting,clear cutting,gradual cutting,and selective cutting,in the Huzhong forest region of the Daxing' an Mountains.We analyzed the mean patch area,aggregation index,percent cover,and age structure of the two typical forest types,larch and white birch.The results showed that forest harvest reduced the percent cover of larch forest while increased that of white birch forest,and there were no significant differences among the various forest harvest scenarios.As compared with other forest harvest scenarios,clear cutting decreased the aggregation level of larch forest while increased that of white birch forest significantly.During the early-stage of the simulation,forest harvest reduced the mean patch area of larch forest while increased that of white birch forest.Clear cutting increased the percent cover of the saplings and middle-aged cohorts of larch and white birch forests significantly,as compared to other forest harvest scenarios.It was concluded that forest harvest,especially clear cutting,promoted the fragmentation of forest landscape,and thus,under the same forest harvest intensities,selective cutting should be adopted as far as possible to reduce the effect of forest harvest on forest ecosystems,and further,to promote the healthy and sustainable development of forest ecosystems.关键词
采伐方式/森林景观/LANDIS/皆伐/渐伐/择伐Key words
forest harvest mode/forest landscape/ LANDIS/clear cutting/ gradual cutting/ selective cutting分类
农业科技引用本文复制引用
陈宏伟,胡远满,常禹,布仁仓,李月辉,刘淼,熊在平..森林采伐方式对森林景观的影响模拟——以大兴安岭呼中林区为例[J].生态学杂志,2013,32(7):1888-1895,8.基金项目
国家自然科学基金项目(41201185,41271201)和中国科学院战略性先导科技专项(XDA05050201)资助. （41201185,41271201）
