Forest floor vegetation of Fraxinus platypoda-Pterocarya rhoifolia forest along Ooyama-zawa valley in Chichibu, Kanto District, Japan, with a special reference to ground disturbance

  • KAWANISHI Motohiro
    Graduate School of Environment and Information Science, Yokohama National University
  • SAKIO Hitoshi
    Saitama Prefecture Agriculture & Forestry Research Center, Forest Laboratory
  • OHNO Keiichi
    Faculty of Environment and Information Science, Yokohama National University

Bibliographic Information

Other Title
  • 奥秩父大山沢のシオジ-サワグルミ林における林床植生の成立と地表攪乱
  • オクチチブ オオヤマ ザワ ノ シオジ サワグルミリン ニ オケル リンショウショクセイ ノ セイリツ ト チヒョウ カクラン

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Description

Relationships between ground disturbance and forest floor vegetation were investigated in Fraxinus platypoda-Pterocarya rhoifolia forest along Ooyamazawa valley in Chichibu, Kanto District, Japan. Six landform types were distinguished along the valley investigated: terrace of debris flow, alluvial fan, scarp of terrace, new landslide site, old landslide slope and talus. Three major species groups were classified by cluster analysis of a releve data set. One of these was characterized by spring ephemerals, storage rhizome and anti-vegetative reproduction. This species group represented the forest floor vegetation inhabiting stable landforms such as terrace of debris flow and alluvial fan. The other two species groups characteristically included annual plants and those with replacement rhizome type. These were peculiar to the landforms scarp of terrace, new landslide site, old landslide slope and talus, located at the foot of sideslopes. In particular, scarp of terrace and new landslide site were extreme in having both the most unstable landform characteristics and floral features.

Journal

  • Vegetation Science

    Vegetation Science 21 (1), 15-26, 2004

    The Society of Vegetation Science

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