Whoa on the wobble! Stem sinuosity in juvenile Douglas-fir across levels of genetic gain, silvicultural treatments, site conditions, and climatic variables in the Pacific Northwest
Whoa on the wobble! Stem sinuosity in juvenile Douglas-fir across levels of genetic gain, silvicultural treatments, site conditions, and climatic variables in the Pacific Northwest
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DOI：
10.1016/j.foreco.2023.121579
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发表时间：
2024-01
影响因子：
3.7
通讯作者：
Michael Premer;Eric Turnblom;A. Weiskittel
中科院分区：
文献类型：
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作者：
Michael Premer;Eric Turnblom;A. Weiskittel
管理森林通过固碳和长期储存在伐木产品中，除了提供生态系统服务和野生动物栖息地之外，还可以作为一种自然的气候变化解决方案。具体来说，商品产品，如尺寸木材和建筑材料，利用高品质，无缺陷的树木，提供最大的经济回报和长期的C库。茎弯曲是幼年沿海花旗松（Pseudotsuga menziesiivar）的一种明显畸形。menziesii（Mirb.）佛朗哥），并可能导致价值损失和经济最终产品退化。虽然因果机制已经感兴趣的几十年，相对较少的是已知的树木改良，造林和当地的生长条件的影响。在太平洋西北部（PNW）的6个装置的实验地块（n= 132）的网络进行了评估，以确定树间距，植被控制，遗传增益，土壤，网站和气候变量干弯曲度的影响10年种植。Sinuosity存在最大的野生遗传来源和低土壤C和A层厚度的网站。严重程度增加干的大小和下降伴随收益的立场密度和当地风速。研究结果表明，特定地点部署的遗传资源和造林治疗可能会提高道格拉斯冷杉干形式的PNW。
Managed forests serve as a natural climate change solution through sequestration of C and long-term storage in harvested wood products, in addition to providing ecosystem services and wildlife habitat. Specifically, commodity products such as dimensional lumber and building materials, utilized from high-quality, defect free trees, provide greatest economic return and long-term C reservoir. Stem sinuosity is a noted deformity in juvenile coastal Douglas-fir (Pseudotsuga menziesiivar. menziesii(Mirb.) Franco) and can result in loss of value and degraded economic end-product. While the causal mechanisms have been of interest for decades, relatively little is known regarding the influence of tree improvement, silviculture, and local growing conditions. A network of experimental plots (n= 132) across six installations in the Pacific Northwest (PNW) were assessed to determine the effects of tree spacing, vegetation control, genetic gain, soil, site, and climate variables on stem sinuosity 10 years since planting. Sinuosity presence was greatest in wild genetic sources and on sites with low soil C and A horizon thickness. Severity increased with stem size and declined with concomitant gains in stand density and local windspeed. Findings suggest that site-specific deployment of genetic resources and silvicultural treatments may enhance Douglas-fir stem form in the PNW.