【摘 要】
：
高山林线是森林分布的海拔上限，对气候变化具有潜在的敏感性，在全球变化研究中日益受到关注.藏东南一带具有完整的植被垂直带，并分布着北半球最高海拔的林线.其中，藏东南色季拉山急尖长苞冷杉(Abies georgei var.smithii)垂直带和高山林线具有很好的代表性.本研究通过建立色季拉山不同海拔梯度上(3600-4400m)由21个急尖长苞冷杉样点组成的树轮网络，揭示了急尖长苞冷杉生长对气候的
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高山林线是森林分布的海拔上限，对气候变化具有潜在的敏感性，在全球变化研究中日益受到关注.藏东南一带具有完整的植被垂直带，并分布着北半球最高海拔的林线.其中，藏东南色季拉山急尖长苞冷杉(Abies georgei var.smithii)垂直带和高山林线具有很好的代表性.本研究通过建立色季拉山不同海拔梯度上(3600-4400m)由21个急尖长苞冷杉样点组成的树轮网络，揭示了急尖长苞冷杉生长对气候的响应关系与海拔、坡向、树龄的关系.
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