Alpine Treelines
Alpine Treelines
复制标题
DOI：
10.1007/978-3-0348-0396-0
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
C. Körner
中科院分区：
文献类型：
--
作者：
C. Körner
林线，无论出现在何处，在热、干旱、营养或盐胁迫梯度下都代表着生命形式优势的突然转变；超过这些线，大量的单茎和高的树冠要么无法发育，要么变得难以负担，要么是不利的（图7.1）。为什么树木在一定海拔以上就会消失，是什么导致高山地带没有树木，即“高山”？这个问题的答案还表明高山植物必须具有哪些功能属性，而树木无法做到这一点。因此，这个问题存在着相互的利益，森林生态学的上坡问题和高山生态学的下坡问题（因为其下边界）。
Treelines, wherever they occur, at thermal, drought, nutritional or salt stress gradients represent an abrupt transition in life-form dominance; lines beyond which massive single stems and tall crowns either can not be developed, become un-affordable or are disadvantageous Fig. 7.1. Why do trees disappear above a certain elevation, what causes the alpine zone to be treeless, i.e. “alpine”? The answer to this question would also indicate which functional attributes alpine plants must have to be where trees are unable to be. Thus, there is a reciprocal interest in this question, upslope for forest ecology, and downslope (because of its lower boundary) for alpine ecology.