Earticle

초록

영어

In this study, vegetation succession and the rate of consequent topsoil development were investigated in shallow landslide scars of sedimentary rock slopes covered by volcanic ashes and pumice in Kagoshima prefecture, Japan. Seven shallow landslide scars of different ages were selected as study areas. In the initial period after the occurrence of a shallow landslide, deciduous broad-leaved trees such as Mallotus japonicus or Callicarpa mollis were occupied in the areas. Approximately 30 years after the landslide, evergreen broad-leaved trees such as Cinnamomum japonicum invaded in the areas, already existed present deciduous broad-leaved trees. After 50 years, the summit of the canopy comprised evergreen broad-leaved trees such as Castanopsis cuspidata var. sieboldii and Machilus thunbergii. Moreover, the diversity of vegetation invading the site reached the maximum after 15 years, followed by a decrease and stability in the number of trees. The total basal areas under vegetation increased with time. It was concluded that the vegetation community reaches the climax stage approximately 50 years after the occurrence of a shallow landslide in the study areas, in terms of the Fisher-Williams index of diversity () and the prevalence of evergreen broad- leaved trees. Moreover, according to the results of topsoil measurement in the study areas, the topsoil was formed at the rate of 0.31 cm/year. The development of topsoil usually functions to improve the multi-faceted functions of a forest. However, when the increased depth of topsoil exceeds the stability threshold, the conditions for a shallow landslide occurrence are satisfied. Therefore, we indicated to control the depth of topsoil and strengthen its resistance by forest management in order to restrain the occurrence of shallow landslides.

목차

Abstract
 Introduction
 Study Area and Methods
  Study area
 Methods
 Results and Discussion
  Species composition and structure
  Vegetation succession
  Development rate of surface-layer soil
 Conclusions
 References

키워드

저자

• Yukiyoshi Teramoto [ Faculty of Agriculture, Kagoshima University, Kagoshima 890-0065, Japan ]
• Etsuro Shimokawa [ Faculty of Agriculture, Kagoshima University, Kagoshima 890-0065, Japan ]
• Tsugio Ezaki [ Faculty of Agriculture, Ehime University, Matsuyama 790-8566, Japan ]
• Suk-Woo Kim [ Department of Forest Resources, Kangwon National University, Chuncheon 24341, Republic of Korea ]
• Su-Jin Jang [ Department of Forestry and Environmental Systems, Graduate School, Kangwon National University, Chuncheon 24341, Republic of Korea ]
• Kun-Woo Chun [ Department of Forest Resources, Kangwon National University, Chuncheon 24341, Republic of Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634