气候变化和CO_2浓度升高对森林影响的探讨

Study on the Effects of Climate Changes and CO_2 Concentration Increase on Forest Ecosystem

CO2和其它温室气体浓度的增加,使全球气候发生了急剧变化,影响到森林生态系统的结构和功能。在总结国内外已有研究成果的基础上,就气候变化及CO2浓度的升高对森林植被地理分布和组成结构、森林生产力和碳氮循环,以及极端灾害事件(病虫害和森林火灾)产生的影响进行了阐述,对气候变化与森林生态系统相互作用关系进行了分析与探讨,对今后的研究方向及研究重点进行了展望,以期为气候变化的科学研究和森林生态系统的管理提供借鉴与帮助。

With the increased concentration of CO2 and other greenhouse gases,dramatic changes have taken place in the global climate,which affects the structure and functions of forest ecosystem.On the basis of summarizing the existing research results at home and abroad,the effects of climate changes and elevated CO2 concentration on forest ecological system,forest vegetation distribution and structure,forest productivity and the carbon and nitrogen cycle and extreme disaster events,including plant diseases and insect pests and forest fires,were discussed in this paper.At the same time,through the analysis on the mutual relationship between forest ecosystem and climate changes,the key directions and corresponding support technologies which need to be strengthened in the future were raised and prospected.This paper provides some reference and help for climate change science research and the forest ecosystem management.