Tohoku Journal of Forest Science
Online ISSN : 2424-1385
Print ISSN : 1342-1336
ISSN-L : 1342-1336
Volume 17, Issue 1
Displaying 1-3 of 3 articles from this issue
Original Article
  • Hisashi Sugita, Jiro Shishiuchi, Harutaka Taguchi, Toshihiko Takahashi
    Article type: Original Article
    2012 Volume 17 Issue 1 Pages 1-7
    Published: March 31, 2012
    Released on J-STAGE: July 26, 2017
    JOURNAL FREE ACCESS
    Damage to lower-story Betula maximowicziana trees caused by logging of upper-story Larix kaempferi trees was investigated in a two-storied stand which had been brought by the regeneration of B. maximowicziana after intensive thinning accompanied with ground surface disturbance by a wheel tractor. The lower-story B. maximowicziana trees were severely damaged by logging involving the use of a harvester for felling and limbing: 75% of them sustained serious damage such as uprooting and stem breakage, while those undamaged and slightly damaged amounted to only 16 and 9%, respectively, located by local. The damage sustained by B. maximowicziana was more serious than other broad-leaved tree species such as Quercus crispula, characterized by the dominance of uprooting. Almost all seriously-damaged B. maximowicziana trees subsequently perished without recovery by sprouting. Such a high risk of damage to lower-story trees suggests that the B. maximowicziana regeneration system in L. kaempferi plantations by intensive thinning accompanied with scarification is unfavorable, due to the need to remove upper-story trees after establishing B. maximowicziana.
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  • Kenichirou Kimura, Shuji Okada, Sachio Ito, Kuniko Okada
    Article type: Original Article
    2012 Volume 17 Issue 1 Pages 8-15
    Published: March 31, 2012
    Released on J-STAGE: July 26, 2017
    JOURNAL FREE ACCESS
    On the basis of "The figure of reform towards regeneration of a forest and forestry" officially announced in 2011, the government started a drastic reform of a forestry planning system, and is also advancing necessary reconsideration about the municipal forest service plan. Because various problems are pointed out to the present plan until now, a new plan will be laid to reconsider the present plan after inspection and evaluation of its regional situation. In this study, we made an attempt to reveal the working conditions of the present plan and to adjust current conditions to make the present plan a more effective one in the case of Furudonomachi, Fukushima Prefecture. As the results, it was revealed that the present plan does not gain the sufficient policy effects, although the present plan was utilized as a standard for the felling of living trees and bamboos: neither thinning nor a strip road building is performed as planned in the present study. The lack of sufficient policy effects in the present plan may be attributed to the findings as follows; since many works of forest are dependent on a governmental subsidy, it is hard to reflect the will of a town to the working conditions; sufficient execution system is not arranged for the present plan; as the present plan is not formed in response to the wishes of the local public, the plan is not thoroughly positioned as a master plan. Although the Forest Act is partly revised, it may be concluded that unification of a plan and various subsidies, reinforcement of execution system, and positive participation of local residues in the execution of the plan are essential to improve the efficacy of the plan.
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