高山树线交错带及其对全球气候变化的响应研究进展  

Review on Alpine Treeline Ecotone and its Responses to the Global Climate Change

作　　者：秦纪洪[1] 王琴[2] 孙辉[2] 武艳镯[2] 易之煦[2] 

机构地区：[1]成都大学城乡建设学院环境工程系,四川成都610102 [2]四川大学环境科学与工程系,四川成都610065

出　　处：《浙江林业科技》2012年第1期63-70,共8页Journal of Zhejiang Forestry Science and Technology

基　　金：国家自然科学基金(40871124);国际科学基金(IFSD/4600-1);成都市科技局项目(10YTYB130SF-023)

摘　　要：高山树线交错带(Alpine treeline ecotone,ATE),处于高寒严酷气候胁迫的临界状态,是高海拔生态系统承受环境变化压力最大的地带之一,全球性和区域性气候变暖必然在这一生态界面上有所反映。已有的研究表明,高山树线交错带对气候变化的响应方式及强度,因地形、ATE类型和物种组成以及研究方法和尺度而异。在气候变化的背景下,关于ATE的动态对高海拔生态系统土壤生物地化过程及碳循环的影响的相关研究还比较缺乏,而土壤生物过程对环境因子的敏感度远高于植物群落演替对环境变化的响应。因此,今后的研究应该结合各学科的最新研究手段,在不同尺度上开展对ATE的生态和土壤过程与机理方面的定量研究。Alpine treeline ecotone （ ATE ） is in the critical state of harsh climate stress and is one of the zones suffering the most stressful environmental change within the high elevation ecosystem. Global and regional climate warming must be reflected in this ecological boundary. The existing researches show that the way and the strength of ATE response to changing climate will vary with topography, type of la＇eeline, tree species, research methods and research scales. Under the background of climate change, researches concerning the impacts of dynamics of ATE on the biogeochemical process of soil and carbon cycle in the high altitude ecosystem are still relatively lacked, while the sensitivity of soil biological processes to the changing environmental factors is much higher than the succession of vegetation communities, so the research of soil biological and biochemical process in the ATE boundary is more full of urgency and necessity. Therefore, the fttrther research should be on the ecological and edaphic processes and mechanisms of ATE quanfifieationally at different scales, supported by the combination of the latest research methods in each subject.

关 键 词：高山树线交错带 气候变化 高海拔生态系统 碳循环 

分 类 号：S718.5[农业科学—林学]