Original scientific paper
Estimating Annual Available Amounts of Forest Biomass Resources with Total Revenues and Costs during the 60-Year Rotation in a Mountainous Region in Japan
Kazuhiro Aruga
; Utsunomiya University Faculty of Agriculture Department of Forest Science 350 Mine Utsunomiya 321-8505 JAPAN
Ayami Murakami
; Utsunomiya University Faculty of Agriculture Department of Forest Science 350 Mine Utsunomiya 321-8505 JAPAN
Chikara Nakahata
; Utsunomiya University Faculty of Agriculture Department of Forest Science 350 Mine Utsunomiya 321-8505 JAPAN
Reiko Yamaguchi
; Utsunomiya University Faculty of Agriculture Department of Forest Science 350 Mine Utsunomiya 321-8505 JAPAN
Masashi Saito
; Shinshu University Faculty of Agriculture Department of Forest Science 8304 Minamiminowa Kamiina 399-4598 JAPAN
Takuyuki Yoshioka
; Nihon University College of Bioresource Sciences Department of Forest Science and Resources 1866 Kameino Fujisawa 252-0880 JAPAN
Abstract
This study extracted production forests and estimated the annual available amounts of forest biomass resources under profitable forest management. Production forests were extracted as sub-compartments where expected revenues surpassed all costs, from planting to final harvesting, for a 60-year rotation. These revenues and costs were estimated for two types of timber harvesting systems (a conventional operation system using a chainsaw and mini-forwarder, and a mechanized operation system using a processor and forwarder) and three types of forest biomass harvesting systems (normal extraction, landing sales, and no biomass extraction) in each sub-compartment using a geographic information system. Then, annual available amounts of forest biomass resources were estimated on the basis of annual supply potentials from production forests.
The model was then applied to Nasushiobara City and the Kanuma area in Tochigi Prefecture, Japan. As a result, the number of profitable sub-compartments was estimated as 2,814 out of a total of 5,756 in Nasushiobara City, and 22,872 out of a total of 32,851 in the Kanuma area. The annual amounts of available forest biomass resources were estimated as 11,849 m3 y–1 and 115,213 m3 y–1 in Nasushiobara City and the Kanuma area, respectively. These amounts largely exceed the annual demands of a 500 kW woody biomass power generation plant planned in Nasushiobara City (6,000 m3 y–1) and a chip production factory located in the Kanuma area (12,000 m3 y–1), respectively.
€1 = 143 yen on March 13, 2011
Keywords
economic balance; geographic information system; harvesting system; production forest; supply potential
Hrčak ID:
126997
URI
Publication date:
15.9.2014.
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