Population growth and other factors affecting land-use and land-cover changes in north-eastern Wollega, Ethiopia

Urgesa, Alemayehu A. and Abegaz, Assefa and Bahir, Asmamaw L. and Antille, Diogenes L. (2016) Population growth and other factors affecting land-use and land-cover changes in north-eastern Wollega, Ethiopia. Tropical Agriculture, 93 (4). pp. 298-311. ISSN 0041-3216

Abstract

This study investigated the influence of population growth on land-use/land-cover changes observed in north-eastern Wollega, Ethiopia between 1972 and 2005. A knowledge-base that will support sound and informed decision-making on sustainable resource management is provided. The changes in land-use/land-cover observed in this region are linked to rainfall and availability of arable land. These two factors combined have encouraged the migration of farmers from relatively less productive areas of the north and centre of the country. To quantify impacts, the study used a combination of land-use/land-cover detection techniques based on time series image processing, assessment of population dynamics and linear regression models. Results indicated that since the 1970s, cropland and settlement areas expanded at the expense of land formerly occupied by forest, shrub and grassland. The regression analyses showed that such changes were associated (P<0.05) with population growth, which averaged 3% per year. The decline in areas occupied by grassland was not correlated with population growth but rather with changes in land-use. Other factors that significantly influenced land-use/land-cover changes were: farming system, government policies and land tenure system, and lack of technology choices. Maintaining the necessary resource-base is a requirement to ensure the long-term sustainability of the region. Therefore, appropriate land management policies need to be developed and implemented at the national level, however, measures should have regional relevance. Additional measures such as promotion of policies that support the process of sustainable intensification of Ethiopian agriculture coupled with effective extension effort, and greater diversification of the source of income for the rural communities are also suggested.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: c. University of the West Indies. Files associated with this record cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - USQ Other
Date Deposited: 17 Oct 2016 05:06
Last Modified: 17 Oct 2016 05:06
Uncontrolled Keywords: cropland expansion, deforestation, environmental protection, resource-use efficiency, soil conservation
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050209 Natural Resource Management
Socio-Economic Objective: D Environment > 96 Environment > 9609 Land and Water Management > 960909 Mountain and High Country Land and Water Management
URI: http://eprints.usq.edu.au/id/eprint/29795

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