The effect of forest treatment on the growth of Quercus crispula plantation for 27 years in eastern Hokkaido

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  • Murata Shusuke
    University Forest, School of Agriculture, Kyushu University
  • Kubota Katsuyoshi
    Division of Forest Environmental Science, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • Nanki Daisuke
    University Forest, School of Agriculture, Kyushu University
  • Nakamura Takuma
    University Forest, School of Agriculture, Kyushu University
  • Kabemura Yuji
    University Forest, School of Agriculture, Kyushu University
  • Ogi Daisuke
    University Forest, School of Agriculture, Kyushu University
  • Inoue Sachiko
    University Forest, School of Agriculture, Kyushu University
  • Kaji Kiyohiro
    University Forest, School of Agriculture, Kyushu University
  • Cho Keiichiro
    University Forest, School of Agriculture, Kyushu University
  • Yamauchi Kohei
    University Forest, School of Agriculture, Kyushu University
  • Ogata Kento
    University Forest, School of Agriculture, Kyushu University
  • Yasuda Yuko
    Educational course of Forest Environmental Science, Department of Agro-environmental Sciences, Graduate School of Bioresoruce and Bioenvironmental Sciences, Kyushu University
  • Okano Tetsuro
    Division of Forest Environmental Science, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • Tashiro Naoaki
    Division of Forest Environmental Science, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • Enoki Tsutomu
    Division of Forest Environmental Science, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • Utsumi Ysuhiro
    Division of Forest Environmental Science, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University

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Other Title
  • 北海道東部のミズナラ造林地における27 年間の林分成長量に与える育林作業の効果
  • ホッカイドウ トウブ ノ ミズナラ ゾウリンチ ニ オケル 27ネンカン ノ ハヤシ ブン セイチョウリョウ ニ アタエル イクリン サギョウ ノ コウカ

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Cost-effective treatment in Quercus crispula plantation was evaluated at three study sites in Ashoro Research Forest, Kyushu　University. These sites had different treatment plans including weeding, clearing, pruning and thinning. The DBH, tree height, clear　length of stem and crown width of Q. crispula were measured for 27 years. In the study sites with no forest treatments, the growth of　Q. crispula was inhibited and that of Betula platyphylla was advanced. The growth of Q. crispula was remarkable in the study sites　with weeding and clearing in the early stages of afforestation. In particular, our study suggested the weeding with shrub cutting after 7years from the settlement could call off the following processes such as cutting, pruning and thinning.

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