Earticle

초록

영어

As Soil Organic Carbon (SOC) concentration can vary among soils with various vegetation and land use types, it is crucial to comprehend how it is distributed throughout the soil profile when evaluating soil carbon storage. This study was conducted to determine the influence of tree variables on SOC in the soil profile of 0-10 cm, 10-20 cm, and 20-30 cm of four forest types; Lower Subtropical Mixed Hardwood Forest (LMHF), Chir Pine Forest (CPF), Upper Temperate Mixed Hardwood Forest (UMHF), and Oak Forest (OF) of Shivapuri Nagarjun National Park of Kathmandu. For soil samples, at least eight replicates of soil each around 300 grams from each forest were extracted following the stratified random sampling method. The highest average bulk density (BD) was observed in the CPF (0.875 gm cm-3) and lowest in the OF (0.725 gm cm-3). The SOC concentration varied between 1.15% and 3.54%. The OF had highest SOC stock (73.058 tha-1) followed by the UMHF, LMHF, and CPF which were 64.862, 46.830, and 34.653 tha-1, respectively and the SOC stocks are significantly different (p=7.75e-08***) as we compare means between the forests. ANOVA test of Organic Carbon Concentration (OCC) between different layers of each forest type showed similar results having significant differences between layers for every forest type (p＜0.05). Tree variables from trees; average dbh, average height, and crown density all resulted in a statistically significant positive correlation with SOC indicating that if these variables are maximum, SOC tends to increase. It is expected that the research findings will be useful for further research in the field of carbon studies about the tree variables for the management of forest habitats for park managers and researchers.

목차

Abstract
Introduction
Materials and Methods
Study site
Soil sampling and data collection
Soil analysis
Results
Calculation of total soil organic carbon stock
Organic carbon concentration (OCC) in relation to the soil depth
Influence of tree variables on SOC stock
Discussion
Conclusion
Acknowledgements
References

키워드

저자

• Jun Shapkota [ Faculty of Forestry, Agriculture and Forestry University, Makwanpur, Hetauda 44100, Nepal ] 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