摘要
高山林线作为森林向苔原过渡的敏感带,历来被生态学家视为生态脆弱区、外界干扰信号的放大器和全球变化重要的预警区。20世纪80年代开始,许多研究关注全球变化对高山林线的影响,这一阶段针对林线海拔高度、纬度位置之间的关系及对未来热环境的响应研究已成为众多学者研究的焦点之一。众多学者依据自身研究目的、不同树种出现上限的原因、局部上影响林木的因子间的差异,在区域上对高山林线的形成机制的提出了诸多假说。本文针对这些假说进行了综述和探讨,并就其中不足之处提出质疑,提出今后需要深入研究的几个方向。
As a sensitive transitional zone between forest and tundra, timberline has always been considered by ecologists to be an ecologically fragile zone, an amplifier of outside interference signals, and a global climate change early warning zone. Since the 1980s, many studies have been made on the effects of global climate change on alpine timberline, mainly addressed the relationships of the upper limits of timberline with altitude and latitude, and in particular, the responses of timberline location to global warming. Several hypotheses were proposed to examine the timberline formation of various tree species affected by environmental factors. This paper summarized these hypotheses, and discussed some potential studies in the future.
出处
《生态学杂志》
CAS
CSCD
北大核心
2009年第11期2393-2402,共10页
Chinese Journal of Ecology
基金
国家自然科学基金项目(30872000)
中国科学院知识创新工程重要方向资助项目(KZX2-YW-331)
关键词
高山林线
形成机制
生态脆弱区
全球变暖
alpine timberline
formation mechanism
ecologically fragile zone
global wanning.
