Document Type : ORIGINAL RESEARCH ARTICLE

Author

Department of Geography, Faculty of Social Science, University of Lagos, Lagos, Nigeria

10.52293/WES.3.2.121

Abstract

Soil erosion is one of the major environmental issues which has caused considerable economic damage and still remains an intractable problem in many parts of Abia state. InVEST model was used to map the environmental and economic cost of soil loss by studying: (1.) sediment exported and retained from soil loss, (2.) nutrient exported and retained from soil loss, and (3.) the resiliency of the hydrological basin to withstand changes from soil and nutrient loss using GIS (Geographic Information System)technique. Estimated total soil loss from sediment export was found to have a higher significant impact on the hydrological basin of Abia state than sediment retained. The model estimated nutrient (Phosphorous and Nitrogen) exported and retained against the economic benefit of nutrient exported and retained as well as the economic value of the basin for retaining nutrient over the specified time span. This found nutrient and economic value lost from sediment export higher than sediment retained. A resilient check was performed on the Abia state basin to ascertain the strength, ability of the basin to spring back into shape and withstand the pressure from on/off-site damage accumulated from soil loss, nutrient loss, and nutrient economic value lost. Abia state basin was found to have a resilient level of 69.20% low and 30.80% high in 1972, 19.63% of very low and 88.88% of low resilient in 1986 and 2003, while in 2015 very low resilient of 39.30% and 60.70% of low resilient. The result reveals a drastic reduction in the resilient level between 1972 and 2015 as well as its agro-productivity, socio economic equalities and overall well-being of Abia sate. This research highlights the fact that proper conservation measures needs to be applied to improve agro productivity, water quality standard and the general well-being of Abia state.

Keywords

Agriculture California (2002). Control of Soil Erosion. Retrieved 17th August 2019 from:http://res2.agr.ca/ecorc/program3/pub/status/control.htm
Blignaut, J.N., Aronson, J., Woodworth,P., Archer, S., Desai, N.  & Clewell, A. F. (2007). Restoring natural capital: Definition and rationale. In Aronson, J., Milton, S.J. & Blignaut, J. N (Eds), Restoring Natural Capital: Science, Business, and Practice. Washington DC: Island Press.
Chisholm, A.H., Ekenayake, A.  & Jayasuriya, S. (1997). Policy and Institutional Reforms and the Environment: The Case of Soil Erosion in Sri Lanka. [Discussion Paper] Department of Agricultural Economics, La Trobe University, Melbourne.
Clarke, H. R.(1992). The supply of Non- degraded. Agricultural land. Austral. J. Agr. Econ. 36(1): 31-56.
Engel, S., Pagiola, S. & Wunder, S. (2008). Designing payments for Environmental services in theory and practice: An overview of the issue. Ecological Economics 65(4): 663–73.
Forest Conservation Act (2002). Riparian forest buffer panel (Bay area regulatory programs). Retrieved 29th July 2014 from: http://www.riparianbuffers.umd.edu/manuals/egulatory.html+60%25+forest+soil+conserv tion&hl=en&ie=UTF-8
Haigh, M. J., Rawat, J. S., Bartarya, S. K.  & Rai, S. P. (1995). Interactions between forest and landslide activity along new highways in the Kumaun Himalaya. Forest Ecology and Management 78(1–3): 173–189.
Herath, G. (2001). Estimating the user cost of soil erosion in tea smallholdings in Sri Lanka, Australasian Journal of Regional Studies 7(1).
Herath, G. (1985). Economics of Soil Erosion control in Tobacco lands: Some preliminary results, Sri Lankan Journal of Agricultural Sciences 23, 24-36.
Huang, Y. & Lu, C. (1993). Advances in  the application of the Universal Soil Loss Equation (USLE) in China. Journal of Fujian Agricultural College (Natural Science Edition) 22 (1): 73 -77.
Ibeabuchi, U. (2020). The resurging effect of  Climate–human interaction on the soil of Abia state, Nigeria: A climate change perspective. Journal of Energy, Environment & Carbon Credits 10(2): 27-44.
Igwe, O. & Fukuoka, H. (2010). Environmental and Socio-economic impact of Erosion in Nigeria, West Africa. International Journal of Erosion Control Engineering 3(1): 102–109.
Johnson, C.W. & Gembhart, K.A. (1982). Predicting sediment yields from sagebrush rangelands. In: ARS, Ed. Estimating Soil Erosion and Sediment Yield on Rangelands. Agricultural Research Service (ARS), Agricultural Reviews and Manuals-W-26. U.S. Department of Agriculture, Tucson, AZ: 145–156.
Kidane, D. & Alemu, B. (2015). The effect of upstream land use practices on Soil erosion and sedimentation in the Upper Blue Nile basin, Ethiopia. Research Journal of Agriculture and Environmental Management 4(2): 55–68.
Lafrance, J. T. (1992). Do increased commodity  price lead to more or less Soil degradation? Austral. J. Agr. Econ. 3691(1): 57-82.
Lant, C. L., Kraft, S. E, Beaulieu, J., Bennett, D., Loftus, T. & Nicklow, J. (2005). Using GIS - based ecological – economic modeling to evaluate policies affecting agricultural watersheds. Ecological Economics 55(4): 467–84.
Lanuza, R. L. (2010 December 7-10). Soil Erosion and Landslide  Vulnerability of Mananga Watershed, Cebu, Philippines. [Paper Presentation] Asia and the Pacific Symposium – Vulnerability Assessments to Natural land Anthropogenic Hazards, Manila, Philippines.
Lipton, M. (1987). Limits of Price Policy for Agriculture: Which Way for the World Bank? Policy Develop. Rev. 5: 197-215.
Nwilo, P. C., Olayinka, D. N., Ibeabuchi, U.  & Adzandeh A. E. (2011). An assessment and mapping of gully erosion hazards in Abia state: A GIS approach. Journal of Sustainable Development 4 (5). DOI:10.5539/jsd.v4n5p196.
Reckhow, K. H., Beaulac, M. N. & Simpson, J. T. (1980). Modeling Phosphorus loading and lake response under uncertainty: A manual and compilation of export coefficients.  U.S.    Environmental    Protection     Agency, Washington, D.C.
Roose, E. (1996). Land husbandry - Components and strategy. 70 FAO Soils Bulletin, Food & Agriculture Organization of the UN, Rome, Italy.
Roose, E. J. (1977). Application of the Universal Soil Loss Equation of Wischmeier and Smith in West Africa. Greenland, D.J & Lal, R. (Eds) Soil Conservation and Management in the Humid tropics, John Wiley and Son Ltd, Printed in Great Britain by William Clowe and Sons, Ltd, London, Beccles and Colchester.
Shiferaw, B., Freedman, H. A. & Swinton, S. M. (2005). Natural resources management in Agriculture: Methods for assessing Economic and Environmental impacts. Wallingford, Oxford shire UK: CABI Publishing. Retrieved 17th August 2019 from: http://www.cabi.org/cabebooks/ebook/20043206490
Singh, T.V.  & Kaur, J. (1989). Studies in  Himalayan.    Ecology    and     Development  Strategies, New Dehli, Himalayan Books.
SWAG  (2002). Principles of Erosion and Sediment Control. Retrieved 8th October 2014 from: http://www.watershedrestoration.org/erosion.htm
Tallis, H. T., Ricketts, T., Guerry, A.  D.,Wood, S. A., Sharp, R., Nelson, E., Ennaanay, D.,Wolny, S., Olwero, N., Vigerstol, K., Pennington, D., Mendoza, G., Aukema, J., Foster, J., Forrest, J., Cameron, D., Arkema, K., Lonsdorf, E., Kennedy, C., Verutes, G., Kim, C.K., Guannel, G., Papenfus, M., Toft, J., Marsik, M., Bernhardt, J., And Griffin, R., Glowinski, K., Chaumont, N., Perelman, A., Lacayo, M. Mandle, L., Griffin, R., Hamel, P., & Chaplin-Kramer, R. (2013). InVEST tip User’s Guide. The Natural Capital Project, Stanford.Wischmeier, W. H. & Smith, D. (1978).  Predicting rainfall erosion losses: A guide to conservation planning. USDA-ARS Agriculture Handbook, Washington DC. WORLD BANK 1986. World Development Report.  Oxford University Press: Oxford.