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首页> 外文期刊>Journal of Sustainable Forestry >An Exploratory, Post-Harvest Comparison of Ecological and Economic Characteristics of Forest Stewardship Council Certified and Uncertified Northern Hardwood Stands
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An Exploratory, Post-Harvest Comparison of Ecological and Economic Characteristics of Forest Stewardship Council Certified and Uncertified Northern Hardwood Stands

机译：森林管理委员会认证的和未认证的北方硬木林分的生态和经济特征的采后探索性比较

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As more forest entities worldwide consider pursuing Forest Stewardship Council (FSC) certification, a critical question remains on whether stand-level management impacts differ between certified and uncertified forests. To begin to answer this question, we measured forest structure on three FSC-certified stands, three uncertified stands, and six adjacent unharvested reference stands (12 stands total) composed primarily of sugar maple (Acer saccharum) on non-industrial private properties in central Vermont, USA. The certified and uncertified partial harvests reduced total tree biomass and live tree carbon storage by one-third compared to reconstructed pre-harvest conditions. Both treatments also contained significantly lower densities of saplings and some mid-size trees compared to non-harvested references due to similar impacts from harvesting. The net present value of merchantable sugar maple over 10 year projections was consistently lower on certified than uncertified stands, but this difference was insignificant at discount rates from 4-8%. The certified stands contained significantly greater total residual volumes of coarse woody debris (standing and downed) than uncertified stands, although the debris was smaller than that found in unmanaged mature forests. Overall, our data suggest that FSC-certified harvested stands in northern hardwood forests have similar sugar maple timber value, aboveground live tree carbon storage value, similar live tree structure, and greater residual coarse woody debris than uncertified harvested stands.
机译：随着全球越来越多的森林实体考虑寻求森林管理委员会（FSC）认证，认证森林和未认证森林之间的标准管理影响是否存在仍然是一个关键问题。为了回答这个问题，我们在中部地区的非工业私有土地上，对三个由FSC认证的林分，三个未经认证的林分和六个相邻的未采伐参考林（总共12个林分）进行了测量，这些林分主要由糖枫（Acer saccharum）组成。美国佛蒙特州。经认证和未经认证的部分采伐与重建的收获前条件相比，使树木总生物量和活树碳储量减少了三分之一。与未收割的参照物相比，由于收割的相似影响，两种处理方法还包含明显较低的树苗和一些中型树木的密度。经认证的可售糖枫树在10年预测中的净现值始终低于未认证的展位，但是在折价率为4-8％的情况下，这种差异微不足道。经认证的林分所含粗木屑（未砍伐和经砍伐）的总残留量比未经认证的林分要大得多，尽管这些碎片比未管理的成熟森林中的碎片小。总体而言，我们的数据表明，与未经认证的伐木林相比，在北部硬木森林中经FSC认证的伐木林具有相似的糖枫木材价值，地上活树碳储量价值，相似的伐木结构以及更大的残留粗木屑。

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