GROWTH BEHAVIORS OF BROAD-LEAVED TREE SPECIES PLANTED AS POTENTIAL NATURAL VEGETATION IN THE ENVIRONMENTAL PROTECTION FOREST OF KOSAKA MINE, AKITA PREFECTURE, JAPAN, 10 YEARS AFTER PLANTING

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  • Ozaki Mitsuhiko
    Japanese Center for International Studies in Ecology, Institute for Global Environmental Strategies
  • Meguro Shin-ichi
    Japanese Center for International Studies in Ecology, Institute for Global Environmental Strategies

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<p>We surveyed broad-leaved tree species grown as potential natural vegetation in the environmental protection forest surrounding the Kosaka mine in Akita Prefecture, Japan. Based on measurements of tree height and basal diameter, growth behavior was examined over the 10-year period since planting. There were large differences in survival rates between species, with Quercus serrata and Quercus mongolica var. grosseserrata showing remarkable survival and growth, and Prunus spp. showing low rates of survival. In terms of vegetation structure, Q. mongolica var. grosseserrata and Q. serrata formed the higher tree layer, with a forest structure based on tree species beginning to form. Growth behavior was examined at the four different types of survey site. In terms of the aspect ratio and volume index (D2H), Magnolia kobus and Fagus crenata exhibited plasticity in growth form depending on the planting site. Meanwhile, although Q. serrata and Q. mongolica var. grosseserrata showed differences in growth behavior between sites, they showed lower environmental selectivity compared with the other planted species. These findings suggest that both Q. serrata and Q. mongolica var. grosseserrata are suitable as dominant species of potential natural vegetation in this region.</p>

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  • 生態環境研究

    生態環境研究 27 (1), 75-85, 2021-06-30

    公益財団法人 地球環境戦略研究機関 国際生態学センター

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