Earticle

초록

영어

The effect of environmental variables on the presence and abundance of tree species in a tropical lowland undisturbed limestone and non-limestone forest in Ben En National Park, Vietnam was investigated. The relationships between 13 environmental variables and 29 tree species with a DBH ≥10 cm, as well as between six 6 physical variables with 26 species of seedling and sapling communities were assessed by canonical correspondence analysis (CCA). Data concerning all tree species ≥10 cm DBH were collected from eighteen 400 m2 sample plots, while the abundance of regeneration (all individuals ≤5 cm DBH) was counted in fifty 2x20 m strip-plots. The significance of species- environments correlations were tested by distribution-free Monte Carlo tests. The CCA of the 29 examined tree species and 13 environmental variables indicated that the presence and abundance of the tree species were closely related to topographic factors. We may confirm that soil properties including pH, soil moisture content, and soil textures, were the most crucial factor in tree species composition and their distribution. Several species including Pometia pinnata, Amesiodendron chinense, Gironniera cuspidate, Cinnamomum mairei, and Caryodaphnopsis tonkinensis were not controlled by soil properties and topographic variables. The CCA also indicated that the abundance of regeneration tree species at all sites had positive and significant correlations with soil depth, while the occurrence of several other tree species (such as Koilodepas longifolium and Aglaia dasyclada) was positively correlated with a higher slope and rocky outcrop.

목차

Abstract
 Introduction
 Materials and Methods
  Study sites
  Sampling design and data collection
 Results
  Tree abundance, basal area, and species richness
  Features of topographic and soil variables
  The relationship between the presence/abundance of tree species and environmental variables
  Variation in the abundance and distribution of regenerationas a result of physical factors
 Discussion and Conclusion
  Effects of topographic variables on the abundance and presence of tree species
  Effects of soil properties on the abundance and presence of tree species
  Variation in the regeneration abundance and distributionof tree species related to physical variables
 Conclusion
 Acknowledgements
 References

키워드

저자

• Thinh Van Nguyen [ Department of Tropical Silviculture and Forest Ecology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Germany, Silvicultural Research Institute (SRI), Vietnamese Academy of Forest Sciences (VAFS), Duc Thang, Bac Tu Liem District, Ha Noi, Vietnam ] Corresponding author
• Ralph Mitlöhner [ Department of Tropical Silviculture and Forest Ecology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Germany ]
• Nguyen Van Bich [ Silvicultural Research Institute (SRI), Vietnamese Academy of Forest Sciences (VAFS), Duc Thang, Bac Tu Liem District, Ha Noi, Vietnam ]
• Tran Van Do [ Silvicultural Research Institute (SRI), Vietnamese Academy of Forest Sciences (VAFS), Duc Thang, Bac Tu Liem District, Ha Noi, Vietnam ]

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