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RESEARCH ARTICLE: Remote Sensing and GIS Based Assessment of Land Degradation and Implications for Ghana’s Ecological Zones

Published online by Cambridge University Press:  20 February 2015

F. Mensah ,
S.K. Adanu  and
D.K. Adanu
F. Mensah
Affiliation:
Centre for Remote Sensing and Geographic Information Services, PMB L 17, University of Ghana, Legon, Accra, Ghana.
S.K. Adanu*
Affiliation:
Centre for Remote Sensing and Geographic Information Services, PMB L 17, University of Ghana, Legon, Accra, Ghana.
D.K. Adanu
Affiliation:
Ghana Institute of Management and Public Administration, P.O. Box AH 50, Achimota, Accra.
*
Address correspondence to: S.K. Adanu, Centre for Remote Sensing and Geographic Information Services; Phone: 00233 24622 8503; (e-mail) sadanu@hotmail.com
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Abstract

Land degradation and desertification have become complex environmental, social, and economic concerns in Ghana owing to decline in agricultural productivity, loss of biodiversity, and forced out-migration from degraded lands to cities in search of jobs or to rural forested communities for farming, resulting in further deforestation. In an attempt to address these complex land degradation and desertification problems, particularly in the northern areas of Ghana, land degradation was assessed in six major ecological zones of Sudan savanna, Guinea savanna, forest transition, moist semi-deciduous forest, evergreen forest, and coastal savanna. The objectives of the assessment were to: (a) analyze current satellite images to document land degradation, (b) model trends of land degradation, and (c) create a desertification hazard map for Ghana. Land degradation was modeled by using ArcGIS 9.3; satellite image analysis was conducted by using ERDAS Imagine software. Land degradation indicator data layers were soil, vegetation, climate, and land management data. The Modified Mediterranean Desertification and Land Use Model was adapted to model desertification and land degradation, which resulted in the production of a land degradation risk map for Ghana. In addition to the modeling, satellite image based land cover classification results from 2000 to 2008 showed evidence of approximately 880.006 sq km of land degradation in Ghana.

Environmental Practice 17: 3–15 (2015)

Type
Features
Information
Environmental Practice , Volume 17 , Issue 1 , March 2015 , pp. 3 - 15
Copyright
© National Association of Environmental Professionals 2015 

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References

Abu, A. 1986. The Problems of Desertification in Northern Ghana. In Proceedings of Workshop on Combating Drought and Desertification. Environmental Protection Agency, Accra, Ghana.Google Scholar
Adanu, S.K., Acher, E.A., Lalley, J., Adanu, S.K.A., and Adanu, D.K. 2014. Forest Cover Change in the Ho Municipality of the Volta Region, Ghana. Global Journal of Science Frontier Research, Environment and Earth Science 14(2):53–59.Google Scholar
Agyeman, I. 2007. Assessment of Environmental Degradation in Northern Ghana: A GIS Based Participatory Approach (PhD thesis). University of Leeds, Leeds, UK.Google Scholar
Arthur, C., and Jeanette, C. 1995. Rural Land Degradation in Australia South Melbourne, Victoria. Oxford University Press, Oxford, UK.Google Scholar
Bakhshandehmehr, L., Soltani, S., and Sepehr, A. 2009. Application of MEDALUS Method for Desertification Mapping in Sejzi Plain. Geophysical Research Abstracts 11:1263–1267.Google Scholar
Barbero-Sierra, C., Margues, M.J., and Ruiz-Perez, M. 2013. The Case of Urban Sprawl in Spain and Active Irreversible Driving Force for Desertification. Journal of Arid Environment 90:95–102.Google Scholar
Bedunah, D.J., and Angerer, J.P. 2012. Rangeland Degradation, Poverty and Conflict: How Can Rangeland Scientists Contribute to Effective Response and Solutions? Range Land Ecology and Management 65(6):606–612.Google Scholar
Bunte, K., Poesen, J., and Torri, D. 1993. Effects of Rock Fragments in Soil Erosion by Water under Different Spatial Scales; A Review. Catena 23:141–146.Google Scholar
Centre for Remote Sensing and Geographic Information Systems. 2010. Land Degradation Assessment in the Ecological Zones of Ghana. EPA Report. Environmental Protection Agency of Ghana, Accra, Ghana.Google Scholar
Coxhead, I., and Oygard, R. 2007. Land Degradation. Draft Paper Submitted for Copenhagen Consensus. Available at http://www.aae.wisc.edu/coxhead.Google Scholar
Darwish, K.H., Safaa, M., Momou, A., and Saleh, S.A. 2013. Egypt Land Degradation Issues with Special Reference to the Impact of Climate Change. Combating Desertification in Asia, Africa, and the Middle East, 113–136.Google Scholar
Dawelbait, M., and Morari, F. 2012. Monitoring Desertification in Savannah Region in Sudan using Landsat Images and Spectral Mixture Analysis. Journal of Arid Environments 80:45–55.Google Scholar
Dedzoe, C.D., Senayah, J.K., Antwi, B.O., and Tetteh, F.M. 2002. Environmental and Socio-Economic Characteristics of the Kpone Catchment in Northern Ghana. Implications for Soil and Water Conservation. CSIR of Soil Research Institute, Accra, Ghana.Google Scholar
Dong, X., Hengjie, Z., Haiting, J., and Shuging, N. 2013. Ecological Restoration of Degraded Wetlands in China. Journal of Resource and Ecology 4(1):63–69.Google Scholar
Dregne, H.E. 1983. Desertification of Coastal Zones. Agricultural, Ecosystem and Environment 58(1):13–22.Google Scholar
Environmental Protection Agency. 2002. National Action Programme to Combat Desertification, Natural Resource Management Project, Environmental Component. Environmental Protection Agency, Accra, Ghana.Google Scholar
Farajzadeh, M., and Nik-Egbal, M. 2007. Evaluation of MEDALUS Model for Desertification Hazard Zonation Using GIS; Study Area: Iyzad Khast Plain, Iran. Pakistan Journal of Biological Sciences 10(16):2622–2630.Google Scholar
Food and Agricultural Organization. 2000. Carbon Sequestration Options under the Clean Development Mechanism to Address Environmental Degradation. World Soil Resources Report. Available at http://www.fao.org/forestry/15528-0534f06d08a9c3cbcd73deefd8d06c674.pdf.Google Scholar
Food and Agriculture Organization. 2008. Land Degradation on the Rise: One Fourth of the World’s Population Affected, Says a New Study. Available at http://www.fao.org/newsroom/en/news/2008/1000874/index.html.Google Scholar
Ghana Statistical Service (GSS). 2000. Ghana Population and Household Census. District Report. GSS, Ho, Accra.Google Scholar
Government of Laos. 1999. The Government’s Strategic Vision for the Agricultural Sector. Ministry of Agriculture and Forestry, Vientiane, Laos.Google Scholar
Jara-Rojas, R., Brave-Ureta, B.E., Engler, A., and Diaz, J. 2013. An Analysis of Joint Adaptation of Water Conservation and Soil Conservation in Central Chile. Land Use and Policy 32:292–301.Google Scholar
Jingsheng, W., Xianzhou., Z., Baoxiony, C., Peili, S., Junlong, Z., Zhenx, S., Jian, T., and Jianshuang, W. 2013. Causes and Restoration of Degraded Alpine Grassland in Northern Tibet. Journal of Resources and Ecology 4(1):43–49.Google Scholar
Kairis, O.R., Kosmas, C., Karavitis, C.H., Ritsema, C., Salvati, L., Acikalin, S., Akald, M., Alfama, M., O.P., Hhopheng, J., and Barrera, J. 2013. Evaluation and Selection of Indicators for Land Degradation and Desertification Monitoring: Types of Degradation, Causes and Implications for Management. Environmental Management 1–20.Google Scholar
Kugbe, J.M., and Henmi, T. 2009. Analyses of Net Annual Nutrient Balance and its Spatio-Temporal Dynamics Due to Bush Fire Losses and Atmospheric Depositional Gains in the Northern Savanna Region of Ghana.Google Scholar
Kwarteng, K.E. 2002. Desertification Looms Over Ghana. Biodiversity Reporting Award. Available at http://www.biodiversityreporting.org (accessed April 12, 2012).Google Scholar
Luijk, G.V., Cowling, R.M., Riksen, M.J.P.M., and Glendag, J. 2013. Hydrological Implication of Desertification: Degradation of South Africa Semi-Arid Subtropical Thicket. Journal of Arid Environments 91:14–21.Google Scholar
Owusu, A.B. 2009. Detecting and Quantifying the Extent of Desertification and its Impact in the Semi arid Sub Saharan Africa. A Case Study of Upper East Region, Ghana. Desertification Abstracts International 07–70:2666.Google Scholar
Poesen, J., and Lavee, H. 1995. Rock Fragments in Top Soil: Significance and Processes. Catena 23:1–28.Google Scholar
Ponce-Hernandez, R. 2002. Land Degradation Assessment in Dry Lands. Approach and Development of a Methodological Framework. Consultancy Report. AGLL, FAO, Rome.Google Scholar
Prasuhn, V., Linger, H., Gisler, S., Herweg, K., Candinas, A., and Clement, J.P. 2013. A High Resolution Soil Erosion Risk Map of Switzerland as Strategic Policy Support Systems. Land Use Policy 32:281–291.Google Scholar
Sagoe, R. 2006. Climate Change and Root Crop Production in Ghana. EPA Report. Environmental Protection Agency, Accra, Ghana.Google Scholar
Scherr, S.J., and Yadav, S. 1995. Land Degradation in the Developing World: Implications for Food, Agriculture and the Environment. Food, Agriculture, and the Environment Discussion Paper 14. Available at http:// www.pdf.usaid.gov/pdf_doc/praby622.pdf (accessed November 12, 2012).Google Scholar
Tonidandel, S., Johnson, J.W., and LeBreton, J.M. 2009. Determining the Statistical Significance of Relative Weights. Psychological Methods 14(4):387–399.Google Scholar
United Nations Conference on Environment and Development. 1992. The Rio Earth Summit. United Nations, New York, NY.Google Scholar
United Nations Convention to Combat Desertification. 1996. Summary of the Third National Report on UNCCD Implementation. Available at http://www.unccd.int/convention/ratif/doeif.php (accessed December, 8, 2009).Google Scholar
United Nations Environment Programme. 1992. What is your Aridity Index? Available at http://www.stuffintheair.com/aridity-index.html (accessed December, 8, 2009).Google Scholar
United Nations Environment Programme. 1999. Global Environment Outlook 2000. United Nations, New York, NY.Google Scholar
United Nations Environment Programme. 2007. Sudan Post Conflict Environmental Assessment. UNEP, Nairobi, Kenya.Google Scholar
World Health Organization. 2012. Climate Change and Human Health: Land Degradation and Desertification. Available at http://www.who.int/globalchange/ecosystems/desert/en/index.html (accessed March 9, 2012).Google Scholar