• At the upper timberline the trees begin to become twisted and deformed.

    树带界线的上限区域,树木开始弯曲变形。

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  • This rapid zone of transition is called the upper timberline or tree line.

    这种快速过渡地带称为“带线”“林木线”。

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  • There are some areas, however, where broadleaf deciduous trees form the timberline.

    然而一些地区阔叶落叶树木形成林木线

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  • There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline.

    对于为什么线以上树木突然停止生长,至今没有公认的解释

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  • In many semiarid areas there is also a lower timberline where the forest passes into steppe or desert at its lower edge, usually because of a lack of moisture.

    许多半干旱地区中,同样存在树带界限的下限区域;在片区域之内,由于缺乏水分,森林沿区域的植被通常会逐渐变成草原沙漠

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  • The upper timberline, like the snow line, is highest in the tropic and lowest in the polar regions.

    上行树带界线,比如雪线,热带最高在极地最低

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  • There is still no universally agreed-on explanation fir why there should be such a dramatic cessation of tree growth at the upper timberline.

    目前没有普遍认同解释来说明为什么在树带界线出现树木停止生长这种戏剧化的现象。

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  • This paper briefly outlined the advance of dendroecology research in terms of forest disturbance, population dynamics, forest structure, forest regeneration patterns and alpine timberline.

    文中简要概述了树轮分析森林干扰群落动态、森林结构林分更新方式以及高山林线研究方面进展

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  • This paper briefly outlined the advance of dendroecology research in terms of forest disturbance, population dynamics, forest structure, forest regeneration patterns and alpine timberline.

    文中简要概述了树轮分析森林干扰群落动态、森林结构林分更新方式以及高山林线研究方面进展

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