Species composition of Abies homolepis forests in relation to landforms along the Azusa River around Kamikochi, Central Japan.

• Nagaoka Fusako

  The Graduate School of the Faculty of Engineering, Yokohama National University

• Okuda Shigetoshi

  Institute of Environmental Science & Technology, Yokohama National University

Bibliographic Information

Other Title

• 上高地梓川河畔におけるウラジロモミ林の種組成と地形要因

Abstract

The relationship between community types and landforms of Abies homolepis forests was investigated along the Azusa River around Kamikochi, Central Japan. Abies homolepis is dominant in some forests on the depositional landforms around the Azusa River in the upper cool temperate zone. Two communities were classified by the phytosociological method : Tsuga diversifolia-Abies homolepis community and Ulmus davidiana var. japonica-Abies homolepis community. The former was differentiated by Tsuga diversifolia, Oxalis acetosella, Euonymus melananthus, E. oxyphyllus and others, and classified into Cornus canadensis, typical, Cacalia hastata var. farfaraefolia and Aesculus turbinata under units. Some of the differential species belonged to the class Vaccinio-Piceetea. The latter community was differentiated by mesic species that belonged to Fraxino-Ulmetalia : Pachysandra terminalis, Cacalia hastata var. ramosa, Mitella pauciflora etc. This community was classified into Sasa senanensis and Mitella pauciflora under units. These two communities were compared with Abies homolepis communities around Mt. Yatsugatake and Mt. Fuji by the synthetic table. The results showed that Abies homolepis communities in Kamikochi had many differential species, and many of them were included in Fraxino-Ulmetalia. The environmental factors (the size and lithology of surface materials, landforms, slope degree and slope aspects) were analyzed by the Quantification-III method. The results showed that Tsuga diversifolia-Abies homolepis community mostly occurs on the alluvial cones and on the valley plains in the tributaries. In contrast, Ulmus davidiana var. japonica-Abies homolepis community was restricted to the floodplains of the main stream which were mainly composed of fine sand. The differences between Cornus canadensis and Cacalia hastata var. farfaraefolia under units are based on the size and lithology of surface materials.

Journal

• Vegetation Science

  Vegetation Science 17 (2), 55-72, 2000

  The Society of Vegetation Science

Keywords

• Abies homolepis forests
• alluvial cones
• floodplains
• Fraxino-Ulmetalia
• Quantification-III method

Details

• CRID: 1390001204486508032
• NII Article ID: 110008145238
• NII Book ID: AA11347548
• DOI: 10.15031/vegsci.17.55
• ISSN: 21894809
• ISSN: 13422448
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed