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首页> 外文期刊>Bioenergy research >Is Use of Both Pulpwood and Logging Residues Instead of Only Logging Residues for Bioenergy Development a Viable Carbon Mitigation Strategy?
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Is Use of Both Pulpwood and Logging Residues Instead of Only Logging Residues for Bioenergy Development a Viable Carbon Mitigation Strategy?

机译：纸浆材和伐木残渣的使用而不是仅伐木残渣的生物能源开发是否是可行的碳减排策略？

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This study adopts an integrated life-cycle approach to assess overall carbon saving related with the utilization of wood pellets manufactured using pulpwood and logging residues for electricity generation. Carbon sequestered in wood products and wood present in landfills and avoided carbon emissions due to substitution of grid electricity with the electricity generated using wood pellets are considered part of overall carbon savings. Estimated value of overall carbon saving is compared with the overall carbon saving related to the current use of pulpwood and logging residues. The unit of analysis is a hectare of slash pine (Pinus elliottii) plantation in southern USA. All carbon flows are considered starting from forest management to the decay of wood products in landfills. Exponential decay function is used to ascertain carbon sequestered in wood products and wood present in landfills. Non-biogenic carbon emissions due to burning of wood waste at manufacturing facilities, wood pellets at a power plant, and logging residues on forestlands are also considered. Impacts of harvest age and forest management intensity on overall carbon saving are analyzed as well. The use of pulpwood for bioenergy development reduces carbon sequestered in wood products and wood present in landfills (up to 1.6 metric tons/ha) relative to a baseline when pulpwood is used for paper making and logging residues are used for manufacturing wood pellets. Avoided carbon emissions because of displacement of grid electricity from the electricity generated using wood pellets derived from pulpwood fully compensate the loss of carbon sequestered in wood products and wood present in landfills. The use of both pulpwood and logging residues for bioenergy development is beneficial from carbon perspective. Harvest age is more important in determining overall carbon saving than forest management intensity.
机译：这项研究采用了集成的生命周期方法来评估与利用纸浆和伐木残渣生产的木屑颗粒发电相关的总体碳节约量。木材产品中的碳固存和垃圾填埋场中存在的木材中的碳被隔离，并避免了由于用木板颗粒产生的电力代替电网电力而导致的碳排放，被认为是整体碳节约的一部分。将总体节能量的估算值与与当前使用的纸浆和伐木残渣相关的总体节能量进行比较。分析单位是美国南部的阔叶松林（Pinus elliottii）种植园。从森林管理到垃圾掩埋场中的木制品腐烂，所有碳流都被认为是开始的。指数衰减函数用于确定积存在木材产品和垃圾填埋场中的木材中的碳。还考虑了由于制造设施中的木材废物燃烧，发电厂中的木屑颗粒以及林地上的伐木残渣引起的非生物碳排放。还分析了采伐年龄和森林经营强度对总体碳节约的影响。与纸浆业用于造纸和伐木残渣用于制造木屑颗粒的基线相比，将纸浆木材用于生物能源开发可减少木质产品和垃圾填埋场中存在的碳固存（高达1.6公吨/公顷）。避免了碳排放，因为使用纸浆木屑颗粒产生的电能取代了电网电，从而完全弥补了木制品和垃圾填埋场中存在的碳固存损失。从碳的角度来看，使用纸浆和伐木残留物进行生物能源开发是有益的。采伐年龄对于确定总体碳减排量比森林经营强度更为重要。

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