Compositional and structural difference in forest stands between south- and north-facing slopes in cool temperate Oku-Nikko and Oku-Kinu regions, central Japan.

• Orito Akiko

  Laboratory of Vegetation Management, Faculty of Agriculture, Tokyo University of Agriculture and Technology

• Hoshino Yoshinobu

  Laboratory of Vegetation Management, Faculty of Agriculture, Tokyo University of Agriculture and Technology

Bibliographic Information

Other Title

• 奥日光・奥鬼怒地方冷温帯林における種組成・構造の南北斜面間での差異

Abstract

Compositional and structural differences between the forest stands on south facing slopes (S-slopes) and north facing slopes (N-slopes) were studied in cool temperate natural forests in Oku-Nikko and Oku-Kinu regions, central Japan, located at the climatic transitional zone from the Japan Sea side to the Pacific Ocean side. As a result of the classification of all surveyed stands with TWINSPAN, three canopy types were recognized : Quercus mongolica var. grosseserrata type (Q-type), Tsuga diversifolia type (T-type) and Fagus crenata type (F-type). Most of the Q-type forests were distributed on the S-slopes in two regions. The T-type forests were mainly distributed on the N-slopes in Oku-Nikko.The F-type forests were distributed on both of the S-slopes and N-slopes in Oku-Nikko, while it is more abundant on the N-slopes than on S-slopes in Oku-Kinu. F. crenata occured in many stands as well as F-type, especially on N-slopes in Oku-Nikko and S-slopes in Oku-Kinu. F. crenata occured in most of layers on the S-slope and N-slope stands in both regions, but Q. mongolica var. grosseserrata was rare in the shrub layer of many stands. T. diversifolia occured in all layers only on the N-slopes in Oku-Nikko. Oku-Nikko is rich in the characteristic species of the beech forests of the Pacific Ocean side, while Oku-Kinu is rich in those of the beech forests of the Japan Sea side. In both regions, however, the Japan Sea side elements occurred more in the N-slope stands than in the S-slope ones. Thus the N-slopes may have the characteristics of Japan Sea side micro-environment in the study regions.

Journal

• Vegetation Science

  Vegetation Science 14 (2), 77-89, 1997

  The Society of Vegetation Science

Keywords

• DCA
• Fagus crenata
• Quercus mongolica var. grosseserrata
• Tsuga diversifolia
• TWINSPAN

Details

• CRID: 1390001204486214400
• NII Article ID: 110008145198
• NII Book ID: AA11347548
• DOI: 10.15031/vegsci.14.77
• ISSN: 21894809
• ISSN: 13422448
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed