Quantifying tree and forest bark structure with a bark-fissure index
Quantifying tree and forest bark structure with a bark-fissure index
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DOI：
10.1139/x09-098
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发表时间：
2009-10-01
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影响因子：
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通讯作者：
Luo, Aidong
中科院分区：
文献类型：
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作者：
MacFarlane, David W.;Luo, Aidong
树皮为森林生态系统中的许多生物提供了栖息地，但在讨论重要的森林结构属性时，通常不考虑森林树皮结构。我们描述了一个新的度量量化树皮结构：树皮裂缝指数（BFI）。我们研究了不同大小的树木水平和垂直分裂树皮层所引起的树皮裂缝的频率和深度的物种特异性变化，发现BFI通常与茎直径呈指数关系，15个不同树种的模式明显不同。我们发现，BFI和树种偏好的白胸，树皮觅食的鸟类之间有很强的相关性。我们演示了如何BFI可以按比例扩大到定义森林规模的树皮结构，使用简单的林分结构数据，如林分表。这项研究提供了一种新的，客观的，可重复的方式量化树木和森林树皮结构，使用简单的树皮测量。
Tree bark provides habitat for many organisms in forest ecosystems, but forest bark structure is typically not considered when important forest structural attributes are discussed. We describe a new metric for quantifying bark structure: a bark-fissure index (BFI). We examined species-specific changes in the frequency and depth of bark fissures caused by both horizontal and vertical splitting of bark layers for trees of different sizes and found that BFI generally scaled exponentially with stem diameter, with distinctively different patterns for 15 different tree species. We found a strong correlation between BFI and tree species preferences of the white-breasted nuthatch, a bark-foraging bird species. We demonstrate how BFI can be scaled up to define forest-scale bark structure using simple stand structural data, such as stand tables. This research contributes a new, objective, and repeatable way of quantifying tree and forest bark structure using simple bark measurements.