不同海拔高度树木径向生长对气候要素响应的研究进展  

Research progress on the response of radial growth to climatic factors at different altitudes

作　　者：张慧[1,2,3] 邵雪梅[1] 张永[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]临沂大学资源环境学院,临沂276005 [3]中国科学院研究生院,北京100049

出　　处：《地球环境学报》2012年第3期845-854,共10页Journal of Earth Environment

基　　金：中国科技部全球变化研究国家重大科学研究计划(2010CB950101);中国科学院战略性先导科技专项(XDA05080201);国家自然科学基金(41071061)

摘　　要：树木径向生长与气候要素之间的关系是树轮气候学研究的基础,而对不同海拔高度上树木径向生长与气候要素的关系研究,有助于更深入地理解树木生长与气候要素的关系。本文对国内外关于不同海拔高度的树木径向生长与气候要素的关系研究进行了总结,结果显示:在相同及相似气候区内,树木径向生长对气候要素的响应随海拔高度变化的趋势较一致。一般而言,森林上限树木径向生长往往与气温密切相关,森林下限树木径向生长与降水密切相关。在十分干旱的地区,上述结论却不一定适用,往往表现为无论森林上、下限,树木径向生长均主要受降水的影响;在水分条件较为充足的地区,亦会出现无论森林上、下限,树木径向生长均与气温的变化显著相关的现象。另外,研究表明树木生长主要受局域气候的影响,不同树种对气候因子的响应差异不明显。The relationship between radial tree growth and climatic factors is the basis of dendroclimatology. Studying the responses of radial growth to climatic factors could contribute to a better understanding of the relationship between them. In this article, we summarized the researches on radial growth responses to climatic factors at different altitudes, and reached the conclusion that at the same and the similar climate zones, the variation of growth-climate responses is same when altitude changes. Usually, radial growth at the upper tree limit closely relates to temperature while precipitation effects those near lower timber line most. But in some regions of special climate patterns, the relationship is simple ： in extremly arid areas, the limiting factor is always precipitaion regardless of altitude variations, and in humid conditions, temperature is critical to tree ring growth. Radial growth variability is primarily associated with local climate ehan^es and interspecific growth variations play an insignificant role.

关 键 词：不同海拔梯度 树木径向生长 气候要素 响应 

分 类 号：S718.45[农业科学—林学]