地学雑誌
Online ISSN : 1884-0884
Print ISSN : 0022-135X
ISSN-L : 0022-135X
特集号:中部山岳域の天候・気候変化を探る
中央アルプス駒ヶ岳10年間の植生変化の動向
下野 綾子牧野 純子室村 聰中村 華子傍島 夏生小熊 宏之
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2019 年 128 巻 1 号 p. 105-113

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 Alpine vegetation is considered to be sensitive to climate change. This assumption is supported by an increasing number of observational studies. Vegetation changes during the last decade at Mt. Komagatake in central Japan are reported. Four permanent quadrats of 1 m × 1 m at each of four plots (total 16 quadrats) are set and each quadrat is divided into 100 small grids (0.1 m × 0.1 m). All vascular plant species are recorded in each grid. Soil surface temperature (at depth of 1 cm) is automatically recorded with data loggers at 1-h intervals to determine the start day of the growing season and to calculate the effective cumulative soil temperature. Species numbers did not differ significantly between 2008 and 2017. However, total plant numbers did increase significantly in 2017 from those in 2008. At the study sites, effective cumulative soil temperatures partly explain the increase in total plant numbers. Dwarf shrubs had a tendency to increase compared to graminoids and forbs.

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© 2019 公益社団法人 東京地学協会
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