The effect of forest treatment on the growth of Quercus crispula plantation for 27 years in eastern Hokkaido
2019
Murata, S. (Kyushu University (Japan). School of Agriculture, University Forest) | Kubota, K. | Nanki, D. | Nakamura, T. | Kabemura, Y. | Ohgi, D. | Inoue, S. | Kaji, K. | Cho, K. | Yamauchi, K. | Ogata, T. | Yasuda, Y. | Okano, T. | Tashiro, N. | Enoki, T. | Utsumi, Y.
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 7 years from the settlement could call off the following processes such as cutting, pruning and thinning.
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