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首页> 外文期刊>Canadian Journal of Forest Research >Structure and regeneration dynamics of three subtropical midmontane moist evergreen broad-leaved forests in southwestern China, with special reference to bamboo in the forest understories
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Structure and regeneration dynamics of three subtropical midmontane moist evergreen broad-leaved forests in southwestern China, with special reference to bamboo in the forest understories

机译：西南地区三种亚热带中山地湿​​性常绿阔叶林的结构和更新动态，特别是林下的竹林

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摘要

Two midmontane moist evergreen broad-leaved forests on the Ailao Mountains, Yunnan, and one on Mount Emei, Sichuan, southwestern China were studied to characterize the forest structure and dynamics as manifested in size, age, canopy gaps, regeneration modes, and the survival of seedlings. The most dominant canopy trees were species of Lithocarpus and Castanopsis of Fagaceae along with species of Machilus of Lauraceae and of Schima of Theaceae. The vertical structures of the forests were multilayered. All the canopy species had multimodal-shaped size and age distributions. In each forest of the study sites, the mean size of a canopy gap, caused mainly by the death of canopy trees, was smaller than 65 m2. No surviving seedlings of Fagaceae species were found in understories having bamboo with a coverage greater than 25% in any quadrat of the three forests. The poor seedling bank in the study forests is apparently due to the presence of bamboo in the understory. The tree regeneration may be synchronously related to the bamboo flowering event (interval approximately 55-60 years).
机译：研究了云南哀牢山的两座中山湿性常绿阔叶林和西南部四川峨眉山的一处，以表征森林的结构和动态，表现为大小，年龄，冠层间隙，更新方式和生存率。的幼苗。最占优势的树冠树是紫金花科的石栎和Cast属的物种，以及月桂科的Machilus和菊科的木属的物种。森林的垂直结构是多层的。所有冠层物种都具有多峰形的大小和年龄分布。在研究地点的每个森林中，主要由树冠死亡引起的树冠间隙的平均大小小于65平方米。在这三个森林的任何一个样方中，在竹子覆盖的林下都没有发现存活的菊科植物幼苗。研究林中较差的幼苗库显然是由于林下存在竹子。树木再生可能与竹子开花事件（间隔大约55-60年）同步相关。

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