Tree-line changes along the Andes: implications of spatial patterns and dynamics
Tree-line changes along the Andes: implications of spatial patterns and dynamics
复制标题
安第斯山脉沿线的林线变化：空间格局和动态的影响
DOI：
10.1098/rstb.2006.1986
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
B. León
中科院分区：
文献类型：
--
作者：
K. Young;B. León
安第斯山脉提供了一个广泛的纬度和地形框架，研究控制森林空间格局的因素（林线）及其通过树木生长形式（树线）表达的物种组成部分。尽管景观格局具有一贯的总体相似性，但鉴于沿着安第斯山脉的物种丰富度和生物物理限制的巨大差异，许多过程必须是独特的。在所有的情况下，评估日期，形态可塑性是一个共同的特点，占主导地位的植物物种的树线。事实上，观察到的许多变化可能与物种特异性特征有关。树木生长形式的生理限制只能解释物种限制，而干扰和周期性气候波动相互作用，影响许多景观格局。在很长一段时间里，树木线提供了独特的栖息地，也许还有物种形成的机会。了解树线动态的空间组织是评估过去可能的通量和未来可能的变化的一种可行的研究方法。
The Andes provide an extensive latitudinal and topographical framework for studying the factors that control the spatial patterns of forests (timberlines) and their species components expressed through the presence of tree growth forms (tree lines). Despite consistent overall similarities in landscape patterns, many processes must be unique, given the dramatic differences in species richness and biophysical constraints along the Andes. In all cases evaluated to date, morphological plasticity is a common trait of plant species that dominate at tree lines. In fact, many changes observed can be related to species-specific traits. Physiological limitations on tree growth form only explain species limits, while disturbances and cyclical climate fluctuations interact to affect many landscape patterns. Over long periods of time, tree lines provide unique habitats and perhaps opportunities for speciation. Understanding the spatial organization of tree-line dynamics is one viable research approach for evaluating the likely past fluxes and possible future changes.