Earticle

초록

영어

The importance of forests and trees in climate change mitigation and soil nutrient cycling cannot be overemphasized. This study assessed the above-ground carbon stock of two exotic and two indigenous tree species – Gmelina arborea, Tectona grandis, Khaya grandifoliola and Nauclea diderrichii and their litter impact on soil nutrient content of an arboretum within the University of Port Harcourt, Nigeria. Data were collected from equal sample plots from the four species’ compartments. Tree growth variables including total height, diameter at breast height, crown height, crown diameter and merchantable height were measured for the estimation of above-ground carbon stock. Soil samples were collected from a depth of 0-30 cm from each compartment and analyzed for particle size distribution, organic carbon, total nitrogen, available phosphorus, exchangeable bases, exchangeable acidity, cation exchange capacity, base saturation, pH, Manganese, Iron, Copper and Zinc. Analysis of Variance (ANOVA) was used to test for significant difference (p＜0.05) in the carbon contents of the four species and the soil nutrient contents of the different species’ compartments. Pearson correlation was used to assess the relationships between the carbon contents, growth parameters and soil parameters. The highest and lowest carbon stock per hectare was observed for G. arborea (151.52 t.ha-1) and K. grandifoliola (45.45 t.ha-1) respectively. Cation exchange capacity and base saturation were highest and lowest for soil under G. arborea and K. grandifoliola respectively. The pH was highest and lowest for soil under G. arborea and T. grandis respectively. Carbon stock correlated positively with dbh, crown diameter, merchantable height and Zn and negatively with base saturation. The study revealed that G. arborea and N. diderrichii can effectively be used for reforestation and afforestation programmes aimed at climate change mitigation across Nigeria. Therefore, policies to encourage and enhance their planting should be encouraged.

목차

Abstract
Introduction
Materials and Methods
Study area
Sampling technique
Measurement and computation of tree growth variables
Computation of above-ground biomass (AGB) and carbon stock
Collection of soil samples
Methods of soil analysis
Methods of data analysis
Results
Growth attributes of the different tree species
Carbon stock of the species
Soil physical properties
Soil chemical properties
Relationship between carbon stock and other variables
Relationship between carbon stock and soil chemical properties
Discussion
Conclusion
Recommendation
References

키워드

저자

• Enimhien Faith Akhabue [ Department of Forestry and Wildlife Management, University of Port Harcourt, Port Harcourt 500001, Nigeria ] Corresponding Author
• Uzoma Darlington Chima [ Department of Forestry and Wildlife Management, University of Port Harcourt, Port Harcourt 500001, Nigeria ]
• Funmilayo Sarah Eguakun [ Department of Forestry and Wildlife Management, University of Port Harcourt, Port Harcourt 500001, Nigeria ]

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