Cost-effectiveness analysis of subsidy schemes for industrial timber development and carbon sequestration in Japanese forest plantations |
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Authors: | Tohru Nakajima Hidesato Kanomata Mitsuo Matsumoto Satoshi Tatsuhara Norihiko Shiraishi |
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Institution: | School of Agricultural and Life Sciences, the University of Tokyo,1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan. Hidesato Kanomata Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba 305-8687, Japan Mitsuo Matsumoto Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba 305-8687, Japan Satoshi Tatsuhara Laboratory of Forest Management, Graduate School of Agricultural and Life Sciences, University of Tokyo 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan Norihiko Shiraishi Laboratory of Forest Management, Graduate School of Agricultural and Life Sciences, University of Tokyo 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan |
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Abstract: | This study uses simulations to investigate the effects of implementing two different Japanese forestry subsidy systems on
timber production and carbon stock, and examines the consequences for harvesting strategies. An existing Local Yield Table
Construction System (LYCS), a wood conversion algorithm, and a harvesting cost model were used in the simulations to test
the applicability of different subsidies to the thinning of stands. Using forest inventory data collected by local government
staff, simulation output was used to calculate forestry profits, carbon stocks, subsidies, the amount of labor required, and
the cost effectiveness of investing in subsidies. By comparing the output of simulations based on two scenarios, we found
that both the clear-cutting area and the amount of harvested timber were larger under Scenario 2, in which the rules governing
subsidy allocations are more relaxed, than under Scenario 1, in which the rules are more restrictive. Because the harvested
timber under Scenario 1 was mainly produced by clear-cutting, the forestry profits and the subsidy predicted in the early
period of the simulation, were larger under Scenario 1 than under Scenario 2. In contrast, the carbon stock was larger under
Scenario 2 than under Scenario 1. The simulation model is likely to be useful for improving Plan-Do-Check-Act cycles implemented
in Japanese forest management systems. |
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Keywords: | carbon stock forestry profits subsidy timber production |
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