陆地表面复杂过程中植物生态系统的作用  

Function of Plant Ecosystem in Land Surface Complex Process

作　　者：张佳华[1] 姚凤梅[2] 

机构地区：[1]中国科学院大气物理研究所全球变化东亚中心,北京100029 [2]北京林业大学水土保持学院,北京100083

出　　处：《水土保持学报》2000年第4期55-59,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金! (3990 0 0 84);国家重点基础研究专项经费! (G19990 4340 0 )资助项目

摘　　要：在陆地表面与大气的相互作用中 ,植物生态系统通过影响陆 -气之间的辐射、热量、水量和动量交换对气候起到重要的作用。首先给出了陆面过程和植物生态系统的概念 ,然后讨论了植物生态系统对气候的反馈作用 ,包括潜热、显热交换 ;植物气孔变化、植被反照率、表面粗糙长度对气候系统的动量、热量、能量、水分和物质交换的反馈。In the relationship between land surface and atmosphere, the plant ecosystem play a import role via the exchange fluxes of radiation, heat, water and momentum. First of all, the concepts of plant ecosystem and land surface process were presented. Second, the relationship between plant ecosystem and climatic system was discussed, these relationship include the feedback effects of plant ecosystem to climate system including sensible and latent heat exchanges, the feedback of surface albedo, surface roughness length, and stomata conductance to heat, water, momentum and matter in climatic system. In the end, the function of plant ecosystem in land surface process was summarized.

关 键 词：植物生态系统 陆面过程 相互作用 气候 辐射反馈 物理反馈 空气动力反馈 

分 类 号：S154.4[农业科学—土壤学]