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*Yasutomo Hoshika
Silvicluture and Forest Ecological Studies, Hokkaido University
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Naoki Inada
Silvicluture and Forest Ecological Studies, Hokkaido University
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Makoto Watanabe
Silvicluture and Forest Ecological Studies, Hokkaido University
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Takayoshi Koike
Silvicluture and Forest Ecological Studies, Hokkaido University