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 GEP  Vol.3 No.9 , November 2015
Estimation of Economic Value of Agroforestry Systems at the Local Scale in Eastern Sudan
Abstract: The objective of this paper is to institute farmers’ own perceptions of the on-and off-farm benefits of agroforestry systems (AFS). Using use value approach, this paper presents empirical evidence on the use values of three types of AFS practiced by the refugees and their hosting communities in Eastern Sudan. The total economic value (TEV) was applied as a framework to estimate the ecosystem values of AFS under study. Goods values were estimated using specific market values, while the services values were qualitatively described according to local perceived values of the local communities. Perceived TEV of AFS includes marketable and non-marketable goods and services. The main direct marketable and sustainable high value products include: food, cash crops, firewood, gum, fodder, NTFPs medicine, fodder, and honey. The valuation results reveal that AFS in the project sites have significantly contributed to the livelihoods of the local communities. Overall, the average net direct-use value of marketable products across all sites was estimated at 7,346,000.0 SDG (1,335,636.36 US$) HH/annum. Gum Arabic alone accounted for 38%, followed by sorghum grain and fodder 35%, and cash crops (sesame) 18%. This value would be many time higher if other indirect values (non-marketable) services such as shade, aesthetic and recreation, environmental protection, biodiversity and carbon sequestration are quantified. The goods and services mentioned above provide sustainable income to the farmer directly and viable benefits to the region indirectly. Hence, AFS in the study sites shows the way to reconcile two conflicting goals: short-term food and livelihood needs with long-term environmental conservation and improvement. The study provides evidence that the high local perceived values of AFS in the study sites constitute a central means of livelihood, whereas its contribution to the local economy. The study stresses the need to quantify the monetary values of non-marketed products to consistently account for resource availability and usage to further sound policy decisions. Tenure security, farmer support services and human capital development were major areas identified for policy development.
Cite this paper: El Tahir, B. and Vishwanath, A. (2015) Estimation of Economic Value of Agroforestry Systems at the Local Scale in Eastern Sudan. Journal of Geoscience and Environment Protection, 3, 38-56. doi: 10.4236/gep.2015.39005.
References

[1]   Barbier, E.B., Acreman, M. and Knowler, D. (1997) Economic Valuation of Wetlands: A Guide for Policy Makers and Planners. Ramsar Convention Bureau, Gland.

[2]   Lette, H. and de Boo, H. (2002) Economic Valuation of Forests and Nature: A Support Tool for Effective Decision-Making. Wageningen: International Agricultural Center, 2002. Series Forests, Forestry and Biodiversity Support Group 6.

[3]   Rasul, G. (2009) Ecosystem Services and Agricultural Land-Use Practices: A Case Study of the Chittagong Hill Tracts of Bangladesh. Sustainability: Science, Practice, & Policy, 5, 15-27.

[4]   Barbier, E.B. (2007) Valuing Ecosystem Services as Productive Inputs. Economic Policy, 22, 177-229.
http://dx.doi.org/10.1111/j.1468-0327.2007.00174.x

[5]   Barbier, E.B. (2009) Ecosystems as Natural Assets. Foundations and Trends in Microeconomics, 4, 611-681.
http://dx.doi.org/10.1561/0700000031

[6]   MEA, Millennium Ecosystem Assessment (2005) Ecosystems and Human Well-Being: Our Human Planet: Summary for Decision Makers. The Millennium Ecosystem Assessment Series, Volume 5, Island Press, Washington DC.

[7]   Buckwell, A. (2009) Public Goods from Private Land. Rural Investment Support for Europe (RISE) Foundation, Brussels. www.risefoundation.eu

[8]   Sukhdev, P. (2010) TEEB-Mainstreaming the Economics of Nature: A Synthesis of the Approach, Conclusions and Recommendations of TEEB. http://teebweb.org

[9]   Fisher, B., Turner, R.K. and Morling, P. (2009) Defining and Classifying Ecosystem Services for Decision Making. Ecological Economics, 68, 643-653.
http://dx.doi.org/10.1016/j.ecolecon.2008.09.014

[10]   de Groot, R.S. and van der Meer, P.J. (2010) Quantifying and Valuing Goods and Services Provided by Plantation Forests. In: Bauhus, J., van der Meer, P.J. and Kanninen, M., Eds., Ecosystem Goods and Services from Plantation Forests. Earthscan, London, Washington DC, 255.

[11]   Costanza, R., d’Arge, R., de Groot, R., Farber, S., Grasso, M., Hannon, B., Limburg, K., Naeem, S., O’Neill, R.V., Paruelo, J., Raskin, R.G., Sutton, P. and van den Belt, M. (1997) The Value of the World’s Ecosystem Services and Natural Capital. Nature, 387, 253-260.
http://dx.doi.org/10.1038/387253a0

[12]   Daily, G.C. (1997) Introduction: What Are Ecosystem Services? In: Daily, G.C., Ed., Nature’s Services: Societal Dependence on Natural Ecosystems, Island Press, Washington DC, 1-10.

[13]   Landell-Mills, N. and Porras, I. (2002) Silver Bullet or Fools’ Gold? A Global Review of Markets for Forest Environmental Services and Their Impacts on the Poor. IIED, London.
http://www.worldagroforestrycentre.org/sea

[14]   Sileshi, G., Akinnifesi, F.K., Ajayi, O.C., Chakeredza, S., Kaonga, M. and Matakala, P.W. (2007) Contributions of Agroforestry to Ecosystem Services in the Miombo Eco-Region of Eastern and Southern Africa. African Journal of Environmental Science and Technology, 1, 68-80.
http://www.academicjournals.org/AJest

[15]   Wunder, S. (2005) Payments for Environmental Service, Some Nuts and Bolts. CIFOR CIFOR Occasional Paper No. 42.

[16]   Pagiola, S., von Ritter, K. and Bishop, J. (2004) Assessing the Economic Value of Ecosystem Conservation. The World Bank Environment Department, Paper No. 101.

[17]   Dixon, J. and Pagiola, S. (1998) Economic Analysis and Environmental Assessment. Environmental Economics and Indicators Unit, Environment Department. EA Sourcebook Update.

[18]   Kumar, B.M. and Nair, P.K.R. (Eds.) (2011) Carbon Sequestration Potential of Agroforestry Systems: Opportunities and Challenges. Advance in Agroforestry, Vol. 8, National and International Policy Makers—Summary: Responding to the Value of Nature, Springer, Dordrecht.

[19]   ICRAF (2006) World Agroforestry Centre, Southeast Asia Web Site.

[20]   Jose, S. (2009) Agroforestry for Ecosystem Services and Environmental Benefits: An Overview. Agroforestry Systems, 76, 1-10.
http://dx.doi.org/10.1007/s10457-009-9229-7

[21]   Idol, T., Haggar, J. and Cox, L. (2011) Ecosystem Services from Smallholders Forestry and Agroforestry in the Tropics. In: Campbell, W.B. and Ortiz, S.L., Eds., Integrating Agriculture, Conservation and Ecotourism: Examples from the Field, Issues in Agro-Ecology-Present Status and Future Prospectus, Vol. 1, Springer, Dordrecht, 209-270.
http://dx.doi.org/10.1007/978-94-007-1309-3_5

[22]   Leakey, R.R.B. (1996) Definition of Agroforestry Revised. Agroforestry Today, 8, 5-7.

[23]   Garrity, D.P. (2004) Agroforestry and the Achievement of the Millenium Development Goals. Agroforestry Systems, 61, 5-17.
http://dx.doi.org/10.1023/B:AGFO.0000028986.37502.7c

[24]   Porter, J., Costanza, R., Sandhu, H., Sigsgaard, L. and Wratten, S. (2009) The Value of Producing Food, Energy, and Ecosystem Services within an Agro-Ecosystem. AMBIO: Journal of the Human Environment, 38, 186-193.
http://dx.doi.org/10.1579/0044-7447-38.4.186

[25]   Franzel, S. and Scherr, S.J. (2002) Trees on the Farm: Assessing the Adoption Potential of Agroforestry Practices in Africa. CABI Publishing, Wallingford.
http://dx.doi.org/10.1079/9780851995618.0000

[26]   Harrison, M.N. and Jackson, J.K. (1958) Ecological Classification of the Vegetation of the Sudan. Forest Bulletin No. 2, Agriculture Publications Committee, Khartoum.

[27]   El Tayeb, G. and Osman, H.M.E.M. (2011) Land Tenure and Baseline Study for the Project: Securing Rights and Restoring Lands for Improved Livelihoods Kassala and Gedaref States-Sudan (Final Report).

[28]   Barbier, E.B., Baumgartner, S., Chopra, K., Costello, C., Duraiappah, A., Hassan, R., Kinzig, A., Lehman, M., Pascual, U., Polasky, S. and Perrings, C. (2009) The Valuation of Ecosystem Services. (Chapter 18). In: Naeem S., Bunker, D., Hector, A., Loreau, M. and Perrings, C., Eds., Biodiversity, Ecosystem Functioning, and Human Wellbeing: An Ecological and Economic Perspective, Oxford University Press, Oxford, 248-262.
http://dx.doi.org/10.1093/acprof:oso/9780199547951.003.0018

[29]   Young, A. (1989) Agroforestry for Soil Conservation. CAB International, Wallingford.
Nair, P.K.R. (2011) Agroforestry Systems and Environmental Quality: Introduction. Journal of Environmental Quality, 40, 784-790.
http://dx.doi.org/10.2134/jeq2011.0076

[30]   Ruiz Perez, M., Belcher, B., Achdiawan, R., Alexiades, M., Aubertin, C., Caballero, J., Campbell, B., Clement, C., Cunningham, A., Fantini, de Foresta, H., Fernandez, C.G., Guatam, K., Hersch Martinez, P., de Jong, W., Kusters, K., Kutty, M.G., Lopez, C., Fu, M., Nair, T.K.R., Ndoye, O., Ocampo, R., Rai, N., Ricker, M., Schrechemberg, K., Shackleton, S., Shanley, P., Sunderland, T. and Youn, Y. (2004) Markets Drive the Specialization Strategies of Forest People. Ecology and Society, 9, 4.

[31]   Sanchez, P.A. (1995) Science in Agroforestry. Agroforestry Systems, 30, 5-55.
http://dx.doi.org/10.1007/BF00708912

[32]   Denning, G.L. (2001) Realizing the Potential of Agroforestry: Integrating Research and Development to Achieve Greater Impact. Development in Practice, 11, 407-416.
http://dx.doi.org/10.1080/09614520120066693

[33]   IIED (1997) Valuing the Hidden Harvest: Methodological Approaches for Local-Level Economic Analysis of Wild Resources. Sustainable Agriculture Programme Research Series, Vol. 3, International Institute for Environment and Development (IIED), London, 71.

[34]   Buresh, R.L. and Tian G. (1998) Soil Improvement by Trees in Sub-Saharan Africa. Agroforestry Systems, 38, 51-76.
http://dx.doi.org/10.1023/A:1005948326499

[35]   Kaonga, M.L. (2012) Agroforestry for Biodiversity and Ecosystems Services: Science and Practices. In Tech, Rijeka.

[36]   Posthumus, H., Rouquette, J.R., Morris, J., Gowing, D.J.G. and Hess, T.M. (2010) A Framework for the Assessment of Ecosystem Goods and Services; a Case Study on Lowland Floodplains in England. Ecological Economics, 69, 1510-1523.
http://dx.doi.org/10.1016/j.ecolecon.2010.02.011

[37]   Farley, J. and Costanza, R. (2010) Payments for Ecosystem Services: From Local to Global. Ecological Economics, 69, 2060-2068.
http://dx.doi.org/10.1016/j.ecolecon.2010.06.010

 
 
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