Earticle

초록

영어

Maintaining trees on farmland improves the carbon sequestration potential of agricultural lands and contributes to global carbon balance. Samples of 35 trees were harvested for aboveground biomass (AGB) and carbon stock measurements in parkland agroforestry fields of eastern zone of Tigray, Northern Ethiopia. Allometric equations were developed using the regression models that related the total AGB with diameter at stump height (DSH), diameter at breast height (DBH) and a combination of DSH, DBH, height (H) and crown diameter (CD). The allometric model related to DBH, Ln (AGB) = -2.85 + 2.4 ln (DBH), was considered the best fit, with the highest adj. R2 (0.88) and lowest prediction residuals sum of squares (PRESS) (3.51 kg), bias (-2 kg), root mean square error (RMSE) (0.3 kg), and Akaike information criterion (AIC) at P<0.01. To validate the best-fitting model for AGB estimation, cross-validation was performed. When assessed with the AGB of F. albida data sets from this work, the species-specific and multi-species previously published models substantially overestimated by 60% and underestimated by 50% respectively. F. albida total AGB was 3372.25 kg ha-1 and 1584.96 kg ha-1 of carbon for a density of 47 trees ha-1 in the parklands. In the F. albida-based parkland farming system, our study identified patterns of carbon distribution in different tree sizes that may serve as a guide for programs that measure, report, and verify carbon stock and promote climate resilient farming system.

목차

Abstract
1. Introduction
2. Materials and Methods
2.1. Allometric Model Selection and Validation
2.2. Comparison Aboveground Biomass Models with Previously Published Models
2.3. Biomass Data Analysis
3. Results
3.1. Faidherbia albida Plant Biomass
3.2. Biomass Models and Cross Validation
3.3. Comparison of the Aboveground Biomass Equations with Previously Published Models
3.4. Tree Biomass Carbon Stock of Faidherbia albida Based Parkland Agroforestry
4. Discussion
4.1. Species-Specific Aboveground Biomass Allometric Equations for F. albida Based Parkland Agroforestry Practices
4.2. Allometric model comparison
4.3. Biomass Carbon Stock of the F. albida Based Parkland Agroforestry Practices
5. Conclusions
Acknowledgement
References

키워드

저자

• Girmay Darcha [ Mekelle Agricultural Research Center, Tigray Agricultural Research Institute, Tigray, Ethiopia/ Department of Land Resource Management and Environmental Protection, Mekelle University, Mekelle, Ethiopia ] Corresponding Author
• Emiru Birhane [ Department of Land Resource Management and Environmental Protection, Mekelle University, Mekelle, Ethiopia/ Institute of Climate and Society, Mekelle University, Tigray, Ethiopia/ Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences (NMBU), Ås, Norway ]
• Hailemariam Kassa [ Mekelle Agricultural Research Center, Tigray Agricultural Research Institute, Tigray, Ethiopia ]
• Yikunoamlak Gebrewahid [ Mekelle Agricultural Research Center, Tigray Agricultural Research Institute, Tigray, Ethiopia ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  선문효정학술연구회 학술대회 프로시딩

• 간기

  반년간

• 수록기간

  2023~2026

• 십진분류

  KDC 238 DDC 289