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OJE> Vol.2 No.4, November 2012
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The influence of altitude and management on carbon stock quantities in rungwe forest, southern highland of Tanzania

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DOI: 10.4236/oje.2012.24025    4,733 Downloads   8,045 Views   Citations
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B. Mwakisunga, A. E. Majule

Affiliation(s)

Institute of Resource Assessment, University of Dar es Salaam, Dar es Salaam, Tanzania.

ABSTRACT

A study was conducted to assess the impacts of elevation, tree species and management on carbon stock on the slopes of Rungwe Mountain in Tanzania. Twenty 15 m radius plots with trees of DBH >10 cm were used to collect trees measurements as well as soil samples at depths of 10 cm, 20 cm and 30 cm. Tree data collected were calculated and analyzed for tree biomass and carbon by using the Tree Biomass Equations (TBE) while soil samples were analyzed for total soil carbon using oxidative reduction method in which soils were combusted at about 600°C in a muffle furnace to released CO2 and SO2 gases carried by the oxygen flow into cells. The results showed that aboveground carbon content increased with altitude ranging from 9.2 t/ha at 2031 m to 561.7 t/ha at 2312 m.a.s.l due to little forest disturbance at high altitudes. However, the trend changed drastically at 2312 m.a.s.l. Soil carbon content tended to increase down the slope ranging from 3.8 t/ha at 2.312 to 4.7 t/ha at 2031 m.a.s.l, respectively. In general, there is limited awareness on sustainable management of forest resource in the study area. It is necessary to empower local communities to monitor and manage their forest resources so that they can contribute to climate change mitigation and income generation through carbon trade under REDD initiative.

KEYWORDS

Altitude; Forest; Carbon Stock; Rungwe; Soil

Cite this paper

Mwakisunga, B. and Majule, A. (2012) The influence of altitude and management on carbon stock quantities in rungwe forest, southern highland of Tanzania. Open Journal of Ecology, 2, 214-221. doi: 10.4236/oje.2012.24025.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Brown, S. (1997) Estimating biomass and bilmass change of tropical forest: A primer. Food and Agriculture Organization of the United Nations, Rome.
[2] Food and Agriculture Organization (2001) FAO Forestry FAO and world bank, soil fertility initiative. Food and Agriculture Organization of the United Nations, Rome.
[3] Food and Agriculture Organization (2008) Technical review of FAO’s approach and methods for National Forest Monitoring and Assessment (NFMA). National Forest monitoring and Assessment Working Paper, Rome.
[4] Gupta, H.S. (2009) Forest as carbon sink-temporal analysis for Ranchi District. Indian Forestry Journal, 32, 6-12.
[5] Gibbs, H. (2007) Monitoring and estimating tropical forest carbon stocks: Making REDD a reality. Nelson Institute for Environmental Studies, University of Wisconsin, Madison.
[6] Grace, J. (2004) Understanding and Managing Carbon Cycle. Journal of Ecology, 92, 189-202.
[7] Intergovernmental Panel on Climate Change (1995) Climate change: A report of the intergovernmental panel on climate change, IPCC Report, Geneva.
[8] Kangalawe, R.M., Majule, A.E. and Shishira, E.K. (2005) An analysis of land use dynamics and land degradation process in the great rift valley, central tanzania: A case of Iramba district. The Organization for Social Science Research in Eastern and Southern Africa, Addis Ababa.
[9] Lehntonen, A. (2005) Carbon stocks and flows in forest ecosystems based on forest inventory data. Finish Research Institute, Vantaa Research Center, Helsinki.
[10] MacDicken, K.G. (1997) A guide to monitoring carbon emissions from deforestation and degradation in developing countries: An examination of issues facing the incorporation of REDD into market-based climate policies. Resource for Future, Washington DC, 84.
[11] Maitima, M.J., Simon, M.M., Robin S.R., Louis, N.G., Majule, A.E., Herbet, L., Dereck, P., Stephen, M. and Sam, M. (2009) The linkages between land use change, land degradation and biodiversity across East Africa. African Journal of Environmental Science and Technology, 3, 310-325
[12] Majule, A.E. (2011) Implications of ecological and social characteristics to community livelihoods in the coastal areas of Tanzania. African Journal of Environmental Science and Technology, 6, 72-79.
[13] Majule, A.E. (2010) The impacts of land management practices on soil quality implications on smallholder productivity in southern highland Tanzania. Journal of Environmental Economics, 1, 59-67.
[14] Majule, A.E. and Shishira, E.K. (2008) Participatory development of sustainable soil fertility management practices through innovative training, south eastern, Tanzania. The ICFAI Journal of Environmental Economics, 1.
[15] Malimbwi, R.E., Solberg, B. and Luoga, E. (1994) Estimation of biomass and volume in miombo woodlands at kitulangalo forest reserve, Tanzania. Journal of Tropical Forest Science, 7, 230-242.
[16] Munishi, P.K.T. and Shirima, D.D. (2009) Valuation, mapping and conservation of carbon stocks and other ecosystem services I: The eastern arc mountains of Tanzania. University of Leeds, UK and Sokoine University of Agriculture, Tanzania.
[17] Prentice, C. (2000) The carbon balance of the terrestrial biosphere: Ecosystem models and atmospheric observations. Ecological Applications, 10, 1553-1573. doi:10.1890/1051-0761(2000)010[1553:TCBOTT]2.0.CO;2
[18] Rowell, D.L. (1994) Soil sciences: Methods and applications. Longman, London.
[19] Sakala, M.G. (1998) The effects of incorporating plant residues on soil acidity in the management of tropical soils. Ph.D. Thesis, Reading University, Reading.
[20] Zahabu, E. (2008) Sinks and sources: A strategy to involve forest communities in Tanzania in global climate policy. Ph.D. Thesis. University of Twente, Enschede.

  
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