高山林线与气候变化关系研究进展

Research advances in the relationship between alpine timberline and climate change

20世纪全球气候经历了异常的变化。 2 0世纪是过去 10 0 0年中增暖最大的 1个世纪 ,并且 90年代是最暖的 10年。作为两个生态系统的过渡地带 ,生态过渡带是监测全球变化的重要地点 ,而森林和苔原之间的高山林线是全球变化最为敏感的地点。从高山林线树木个体对气候变化的响应、气候变化下林线处树木的更新、林线格局变化以及高山林线与气候变化关系研究中所采用的研究方法等方面 ,综合论述了国内外的研究进展 ,最后提出了高山林线研究中需要注意的问题 ,并对今后的研究趋势作了展望。

There is little doubt that the global climate is experiencing exceptional changes.The rate of warming during the 20 th century was the greatest in the last 1000 years,with the 1990s being the warmest decade.As the boundary zones between major ecosystems,ecotones are important sites for monitoring the effects of global change.The forest-tundra ecotone,formed by alpine timberline,may be especially sensitive to climate change.Research advances in the relationship between alpine timberline and climate change were briefly summarized from the relationship between single tree and weather conditions,the regeneration of trees under climate change,the pattern of alpine timberline,and the methods adopted in the research on the relationship between alpine timberline and climate change.At last,the problem in the research on alpine timberline was listed,and the research trends in the future were also prospected.