Supply potential and annual availability of timber and forest biomass resources for energy considering inter-prefectural trade in Japan
Supply potential and annual availability of timber and forest biomass resources for energy considering inter-prefectural trade in Japan
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考虑日本县际贸易的能源木材和森林生物质资源的供应潜力和年度可用性
DOI：
10.1016/j.landusepol.2020.104780
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发表时间：
2020
期刊：
影响因子：
7.1
通讯作者：
K. Aruga
中科院分区：
文献类型：
--
作者：
B. Battuvshin;Yusuke Matsuoka;Hiroaki Shirasawa;Keisuke Toyama;Uichi Hayashi;K. Aruga
这项研究估计了日本在有利可图的森林管理下木材和森林生物质资源的供应潜力和年可获得性。它聚焦于福岛、茨城、彻木和群马四个县，并考虑了这些县之间的贸易。生产林被提取为小班，从种植到最终收获，预期收入超过所有成本。为了估算收获成本，根据每个县的地形特征确定了适当的收获制度。原木市场和木质生物质发电厂被认为是木材和森林生物质资源的目的地。包括使用收割机和转运商的定尺(CTL)系统的年可获得性占总可获得性的58%，尽管CTL的供应潜力只有15%；这是因为CTL是生产率最高、成本最低的收获系统。然后，考察了补贴对可获得性的影响。在额外的再生补贴下的可获得性几乎满足了该地区目前的全部需求。此外，间伐补贴的可用性可以满足该地区预测的未来需求，而间伐和额外更新补贴的可用性可以满足本研究分析的所有县的未来需求。因此，补贴在日本林业经营的盈利能力以及木材和森林生物质资源的供应方面发挥着重要作用。
This study estimates the supply potential and annual availability of timber and forest biomass resources under profitable forest management in Japan. It focuses on four prefectures, namely, Fukushima, Ibaraki, Tochigi, and Gunma, and considers the trade between these prefectures. Production forests were extracted as subcompartments where the expected revenues surpassed all costs, from planting to final harvest. To estimate harvesting costs, appropriate harvesting systems were determined according to each prefecture’s topographical features. The log markets and woody biomass power generation plants were assumed to be the destinations for timber and forest biomass resources. Annual availability from the Cut-To-Length (CTL) system, consisting of the use of harvesters and forwarders, accounted for 58 % of the total availability, even though the supply potential from CTL was only 15 %; this is because CTL is the most productive and least expensive harvesting system. Then, the effects of subsidies on availability are examined. Availability under an additional regeneration subsidy meets almost the entire current demand in this region. Furthermore, availability with a thinning subsidy can meet the forecasted future demand in this region, while availability with both thinning and additional regeneration subsidies can meet future demand in all prefectures analyzed in the present study. Thus, subsidies play an important role in the profitability of forestry operations as well as the supply of timber and forest biomass resources in Japan.
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