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首页> 外文期刊>Journal of Tropical Forest Science >THE EFFECTS OF LOGGING ON THE ARCHITECTURE OF BORNEAN RAIN FOREST TREES
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THE EFFECTS OF LOGGING ON THE ARCHITECTURE OF BORNEAN RAIN FOREST TREES

机译：伐木对波恩雨林树木结构的影响

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Tree parameters were compared between trees in a logged (logged eight years ago) and an unlogged forest in Borneo. This comparison was made for 3 to 10 cm diameter at breast height (dbh) trees of four tree species, namely, Mallotus penangensis, M. wrayi, Shorea johorensis and S. parvifolia. The crown position index indicated that light levels tended to be lower in the logged forest This probably resulted from the higher tree densities in the 10 to 30 cm dbh class Leaf display parameters did not differ between the forests. Logged forest trees had narrower crowns than unlogged forest trees, except for M. wrayi. Mallotus wrayi and S. parvifolia had relatively thick boles in logged forest These responses to logging may reflect recent competition for light and space (narrow crowns), and high light levels shortly after logging (thicker boles). These architectural responses to logging did not parallel architectural responses to increased light levels. After eight years the canopy of the logged forest hadalready closed, and light levels above juvenile trees were low. This indicated that the effects of increased light levels quickly reduced during the first years after logging.
机译：在婆罗洲一个砍伐的（八年前记录的）树木和一个未砍伐的森林之间的树木参数进行了比较。比较了四种树种的胸径（dbh）为3到10 cm的直径，这四种树种分别是槟榔树（Mallotus penangensis），瓦拉木兰（M. wrayi），柔佛树（Shorea johorensis）和小叶葡萄球菌（S. parvifolia）。树冠位置指数表明采伐森林中的光照水平往往较低。这可能是由于10至30 cm dbh等级的树木密度较高所致。森林之间的叶片显示参数没有差异。伐木的树冠比未伐木的树冠要窄，除了Wrayi。 Mallotus wrayi和S. parvifolia在伐木森林中有相对较粗的树干，这些对伐木的反应可能反映了近期对光和空间的竞争（狭窄的树冠），以及伐木后不久的高光水平（较稠的树干）。这些对日志记录的体系结构响应没有与对增加的光照水平的体系结构响应并行。八年后，砍伐的森林天篷已经关闭，幼树上方的光照水平很低。这表明在采伐后的最初几年中，增加光照水平的影响迅速降低。

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