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首页> 美国卫生研究院文献>Proceedings of the Royal Society B: Biological Sciences >Degraded lands worth protecting: the biological importance of Southeast Asias repeatedly logged forests
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Degraded lands worth protecting: the biological importance of Southeast Asias repeatedly logged forests

机译：值得保护的退化土地：东南亚屡遭砍伐的森林的生物学重要性

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摘要

Southeast Asia is a hotspot of imperilled biodiversity, owing to extensive logging and forest conversion to oil palm agriculture. The degraded forests that remain after multiple rounds of intensive logging are often assumed to be of little conservation value; consequently, there has been no concerted effort to prevent them from being converted to oil palm. However, no study has quantified the biodiversity of repeatedly logged forests. We compare the species richness and composition of birds and dung beetles within unlogged (primary), once-logged and twice-logged forests in Sabah, Borneo. Logging had little effect on the overall richness of birds. Dung beetle richness declined following once-logging but did not decline further after twice-logging. The species composition of bird and dung beetle communities was altered, particularly after the second logging rotation, but globally imperilled bird species (IUCN Red List) did not decline further after twice-logging. Remarkably, over 75 per cent of bird and dung beetle species found in unlogged forest persisted within twice-logged forest. Although twice-logged forests have less biological value than primary and once-logged forests, they clearly provide important habitat for numerous bird and dung beetle species. Preventing these degraded forests from being converted to oil palm should be a priority of policy-makers and conservationists.
机译：由于广泛的伐木和森林向油棕农业的转化，东南亚是生物多样性受到威胁的热点地区。经过多次密集采伐后留下的退化森林通常被认为没有什么保护价值。因此，没有采取共同的努力来防止它们被转化为油棕。但是，尚无研究量化重复砍伐森林的生物多样性。我们比较了婆罗洲沙巴州未砍伐（原始），曾经砍伐和两次砍伐的森林中鸟类和类的物种丰富度和组成。伐木对鸟类的总体丰富度影响很小。一次采伐后，粪甲虫的丰富度下降了，但两次采伐后没有进一步下降。鸟类和甲虫群落的物种组成发生了变化，特别是在第二次轮伐轮伐之后，但两次受伐后，全球濒危鸟类（IUCN红色名录）并没有进一步下降。值得注意的是，在未砍伐的森林中发现的超过75％的鸟类和甲虫物种仍存在于两次砍伐的森林中。尽管两次采伐的森林比原始和一次采伐的森林具有更低的生物学价值，但它们显然为众多鸟类和d甲虫提供了重要的栖息地。防止这些退化的森林被转化为油棕应该成为政策制定者和保护主义者的优先事项。

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