Estimation of Forest Biomass and Carbon Stocks Changes in Sunt (Acacia nilotica Linn Willd.) Plantations, Sinnar State, Sudan
DOI:
https://doi.org/10.32734/jsi.v9i01.18955Keywords:
Biomass, Carbon Stock, Forest Degradation, Trees Density, Sinnar StateAbstract
This study quantifies changes in tree density, above ground biomass (AGB) and above ground carbon (AGC) in Seiro Riverine Forests (SRF) and Abutiga Riverine Forest (ARF)we use inventory data done by forest national corporation (FNC) in 2006 and reinventors in 2015for this research. A total of 224 circular sample plots (1000 m² each), 129 in Seiro and 96 in Abutiga, were established using a systematic sampling grid method. The distance between plots was 100 m, and between survey lines, 200 m. In each plot, all living trees were identified and counted, and their diameters at breast height (DBH) were recorded. The findings revealed a significant reduction in average tree density, dropping from 93 to 40 trees/ha in SRF, and from 140 to 40 trees/ha in ARF. (AGB) and (AGC) were assessed in Acacia nilotica plantations of varying ages in Abutiga and Seiro forests. Garef consistently showed the highest biomass and carbon stocks, Maya the lowest, and Karb intermediate values. Similar trends were observed across older and younger stands, highlighting strong site-specific differences. These results emphasize the importance of targeted management to sustain carbon storage and enhance the ecological function of Acacia nilotica plantations.
Downloads
References
[1] D. Thompson, M. R. Guariguata, K. Okabe, C. Bahamondez, R. Nasi, V. Heymell, C. Sabogal, “An operational framework for defining and monitoring forest degradation,” Ecology and Society, vol. 18, no. 2, 2013.
[2] M. Simula, E. Mansur, “Un desafío mundial que reclama una respuesta local,” Unasylva: revista internacional de silvicultura e industrias forestales, vol. 62, no. 238, pp. 3-7, 2011.
[3] Thompson, “Biodiversity, ecosystem thresholds, resilience and forest degradation,” Unasylva, vol. 62, no. 238, pp. 25-30, 2011.
[4] FAO, “Assessing forest degradation-Towards the development of globally applicable guidelines,” Forest Resource Assessment Working paper, no. 177, 2011.
[5] Mapaure, A. Ndeinoma, “Impacts of local-level utilization pressure on the structure of mopane woodlands in Omusati region, Northern Namibia,” African Journal of Plant Science, vol. 5, no. 5, pp. 305-313, 2011.
[6] P. Acharya, R. B. Dangi, M. Acharya, “Understanding forest degradation in Nepal,” Unasylva, vol. 62, no. 2, p. 238, 2011.
[7] FAO, “Assessing forest degradation - towards the development of globally applicable guidelines,” FAO Forest Resources Assessment Working Paper, pp. 1-5, 2011.
[8] R. Martin, S. C. Thomas, “A reassessment of carbon content in tropical trees,” PloS one, vol. 6, no. 8, p. e23533, 2011.
[9] M. Herold, M. Skutsch, “Monitoring, reporting and verification for national REDD+ programmes: two proposals,” Environmental Research Letters, vol. 6, no. 1, p. 014002, 2011.
[10] E. E. A. Elsiddig, J. C. Hetherington, “The stem and branch volume of Acacia nilotica in the Fung region in the Sudan,” University college of North Wales, Department of forestry and wood science publication, 1985.
[11] Y. O. Adam, J. Pretzsch, D. Darr, “Land use conflicts in central Sudan: Perception and local coping mechanisms,” Land use policy, vol. 42, 2015.
[12] B. E. Mohammed, “Detection of Forest Cover Change and Productivity Trends (1966-2006) Reverain Forests,” Doctoral dissertation, UOFK, 2015.
[13] A. N. Djomo, N. Picard, A. Fayolle, M. Henry, A. Ngomanda, P. Ploton, J. M. Bongers, T. A. Ifo, B. S. Nguema, P. Lejeune, “Tree allometry for estimation of carbon stocks in African tropical forests,” Forestry: Int. J. For. Res., vol. 89, no. 4, pp. 446–455, 2016. doi: 10.1093/forestry/cpw012
[14] Intergovernmental Panel on Climate Change, “2006 IPCC Guidelines for National Greenhouse Gas Inventories,” Geneva, 2006. Retrieved from https://www.ipcc-nggip.iges.or.jp/public/2006gl/.
[15] S. A. Alam, M. Starr, B. J. F. Clark, “Tree biomass and soil organic carbon densities across the Sudanese woodland savannah: A regional carbon sequestration study,” J Arid Environ, vol. 89, pp. 67-76, 2013. DOI: 10.1016/j.jaridenv.2012.10.002
[16] G. Forkuor et al., “Above-ground biomass mapping in West African dryland forest using Sentinel-1 and 2 datasets-A case study,” Remote Sensing of Environment, vol. 236, p. 111496, 2020.
[17] M. Lung, A. Espira, “The influence of stand variables and human use on biomass and carbon stocks of a transitional African forest: Implications for forest carbon projects,” For Ecol Manag, vol. 351, pp. 36-46, 2015. DOI: 10.1016/j.foreco.2015.04.032.
[18] E. Donegan, G. Sola, Z. Cheng, L. Birigazzi, J. G. P. Gamarra, M. Henry, G. Vielledent, T. Chiti “GlobAllomeTree’s wood density database”. 2024
[19] Harison, J. Jackson, “Ecological Classification of Vegetation,” The Sudan Agricultural Publications Committee, Khartoum, Sudan, 1958
[20] Osman, “The use of site index for monitoring site quality and productivity of the Sunt plantation in the Blue Nile Case Study: Riverain Forest along the Blue Nile Lembwa Forest,” Doctoral dissertation, UOFK, 2005.
[21] H. Ritchie, M. Roser. Above-ground biomass in forest per hectare. Our World in Data. 2020
[22] G. Gebeyehu, T. Soromessa, T. Bekele, D. Teketay, “Species Composition, Stand Structure, and Regeneration Status of Tree Species in Dry Afromontane Forests of Awi Zone, Northwestern Ethiopia,” Ecosystem Health Sustain., vol. 5, no. 1, pp. 199–215, 2019. doi: 10.1080/20964129.2019.1664938
[23] N. A. Gurashi, A. M. Elhag, M. A. Ahmed, E. A. Elsiddig, A. A. Mohammed, “Aboveground biomass, carbon stock, and stand characteristics of three selected riverine reserved forests in Sinnar State, Sudan,” J. Agric. For. Res., vol. 3, no. 1, pp. 13–21, 2024
[24] W. E. Abaker, F. Berninger, G. Saiz, J. Pumpanen, M. Starr, "Linkages between soil carbon, soil fertility and nitrogen fixation in Acacia senegal plantations of varying age in Sudan," Peer. J vol. 6, p. e5232, 201
Downloads
Published
How to Cite
Issue
Section
License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.













