日本におけるチマキザサ節の潜在分布域の予測と気候変化の影響評価

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  • Habitat prediction and impact assessment of climate change on dwarf bamboo of the Section <i>Sasa</i> in Japan
  • ニホン ニ オケル チマキザサセツ ノ センザイ ブンプイキ ノ ヨソク ト キコウ ヘンカ ノ エイキョウ ヒョウカ

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<p>Relationship between Sect. Sasa distributions and climate was modelled by using a classification tree model and clarified at ca. 1-km2 spatial resolutions in Japan. Occurrence probability was then predicted under both current climate and the future climate change scenario RCM20 (2081-2100) to assess the impact of climate change. Five climatic factors (warmth index: WI, minimum temperature of the coldest month: TMC, summer precipitation: PRS, maximum snow water equivalent: MSW, winter rainfall: WR) were used as predictor variables, and the species distribution data obtained from Phytosociological Relevé Data Base was used as a response variable. Deviance-Weighted Scores revealed that the most influential factor for the species distribution was MSW, followed by WI, PRS, WR and TMC. Predicted potential habitat was divided into “suitable habitat” and “marginal habitat”, based on the Receiver Operating Characteristic analysis. Climatic conditions for suitable habitat were WI ≥ 31.6°C·month and MSW ≥ 131.6mm. The area of suitable habitats was predicted to decrease 46.7% due to decrease in MSW, and 69.9% of marginal habitats were predicted to turn into nonhabitat due to increase in WI under the global warming.</p>

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  • ＧＩＳ‐理論と応用

    ＧＩＳ‐理論と応用 16 (2), 99-113, 2008-12-31

    一般社団法人　地理情報システム学会

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