首页> 外文期刊>Scandinavian Journal of Forest Research >A refined view on the 'Green lie' forest structure and composition succeeding early twentieth century selective logging in SE Norway.
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A refined view on the 'Green lie' forest structure and composition succeeding early twentieth century selective logging in SE Norway.

机译:二十世纪初在挪威东南部进行选择性伐木之后,对“绿色谎言”森林结构和组成的看法得到了完善。

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摘要

Logging exceeded growth and timber trees were sparse in Norwegian forests in the early 1900 s. Still, the forest canopy was lush green and characterised by large tree-crowns. This situation was referred to as the "Green lie" and was advocated by foresters throughout Scandinavia as an argument in favour of forestry practices based on clear-felling. Here we examine effects of past selective loggings on forest structure and composition in a spruce forest landscape using dendroecology and historical records. Our results show that forests that were selectively logged up to the early 1900 s could be structurally heterogeneous with multi-layered canopies, varying degree of openness and continuous presence of old trees across different spatial scales. Because the past forests were not clear-felled, a diverse forest structure in terms of tree species composition and age and diameter distribution was maintained over time, which could enable forest-dwelling species to persist during the early phase following the loggings in the past. This is in sharp contrast to the situation in most modern managed forest landscapes in Scandinavia. A better understanding of the link between loggings in the past- and present-day forest structure and diversity will contribute to rewarding discussions on forestry methods for the future.Digital Object Identifier http://dx.doi.org/10.1080/02827581.2011.628950
机译:1900年代初,挪威森林的伐木量超过了其生长量,树木稀疏。尽管如此,林冠还是郁郁葱葱的绿色,并具有大树冠的特征。这种情况被称为“绿色谎言”,整个斯堪的纳维亚半岛的林农都提倡这种观点,认为这是基于砍伐森林的林业做法的主张。在这里,我们使用树状生态学和历史记录检查过去的选择性伐木对云杉林景观中森林结构和组成的影响。我们的结果表明,到1900年代初有选择地采伐的森林在结构上可能是异质的,有多层冠层,不同程度的开放性和在不同空间尺度上连续存在的老树。由于过去的森林没有被砍伐,因此树木的种类组成,年龄和直径分布随时间变化的森林结构得以维持,这可以使森林物种在伐木之后的早期持续存在。这与斯堪的纳维亚半岛大多数现代管理森林景观的情况形成鲜明对比。更好地理解过去和现在的森林结构与多样性之间的联系将有助于对未来的林业方法进行有益的讨论。数字对象标识符http://dx.doi.org/10.1080/02827581.2011.628950

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