Earticle

초록

영어

Area exclosure is a widely practiced intervention of restoring degraded lands though its impact in sequestering terrestrial and soil carbon is scanty. The study was initiated to investigate the effect of exclosure of different ages on carbon sequestration potential of restoring degraded dryland ecosystems in eastern Tigray, northern Ethiopia. Twelve plots each divided into three layers were randomly selected from 5, 10 and 15 years old exclosures and paired adjacent open grazing land. Tree and shrub biomasses were determined using destructive sampling while herb layer biomass was determined using total harvest. The average total biomass obtained were 13.6, 24.8, 27.1, and 55.5 Mg ha-1 for open grazing, 5 years, 10 years, and 15 years exclosures respectively. The carbon content of plant species ranged between 48 to 53 percent of a dry biomass. The total carbon stored in the 5 years, 10 years and 15 years age exclosures were 39 Mg C ha-1, 46.3 Mg C ha-1, and 64.6 Mg C ha-1 respectively while in the open grazing land the value was 24.7 Mg C ha-1. Carbon stock is age dependent and increases with age. The difference in total carbon content between exclosures and open grazing land varied between 14.3-40 Mg C ha-1. Although it is difficult to extrapolate this result for a longer future, the average annual carbon being sequestered in the oldest exclosure was about 2.7 Mg C ha-1 yr-1. In view of improving degraded area and sequestering carbon, area exclosures are promising options.

목차

Abstract
Introduction
Materials and Methods
Study area
Experimental design
Total biomass estimation
Estimation of total biomass and scaling factor
Plant biomass carbon determination
Soil sampling and total organic carbon determination
Statistical analysis
Results and Discussion
Effect of area exclosure on biomass
The effect of area exclosure on carbon stock
Conclusion
Acknowledgements
References

키워드

저자

• Zenebu Halefom [ Mekelle Zone Bureau of Agriculture, Mining and Energy, Mekelle 38, Ethiopia ]
• Fassil Kebede [ Gonder University, College of Agriculture and Veterinery, Gonder 196, Ethiopia ]
• Ibrahim Fitwi [ Mekelle University, College of Dryland Agriculture and Natural Resources, Mekelle 231, Ethiopia ]
• Zenebe Abraha [ Mekelle University, College of Dryland Agriculture and Natural Resources, Mekelle 231, Ethiopia ]
• Girmay Gebresamuel [ Mekelle University, College of Dryland Agriculture and Natural Resources, Mekelle 231, Ethiopia ]
• Emiru Birhane [ Mekelle University, College of Dryland Agriculture and Natural Resources, Mekelle 231, Ethiopia, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås 5003, Norway ] 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

  1981~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634