Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies
Rangelands occupy 25% of the total land surface globally. In Africa, rangelands are estimated to cover 66% of the land surface, although there are variations from country to country. In Eastern Africa, for example, land surface coverage of rangeland areas varies from 44% in Uganda and 65% in Ethiopi...
| Autores principales: | , , , , , |
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| Formato: | Artículo preliminar |
| Lenguaje: | Inglés |
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International Center for Tropical Agriculture
2019
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/102393 |
| _version_ | 1855531021020168192 |
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| author | Bolo, Peter Omondi Sommer, Rolf Kihara, Job Maguta Kinyua, Michael Nyawira, Sylvia Notenbaert, An Maria Omer |
| author_browse | Bolo, Peter Omondi Kihara, Job Maguta Kinyua, Michael Notenbaert, An Maria Omer Nyawira, Sylvia Sommer, Rolf |
| author_facet | Bolo, Peter Omondi Sommer, Rolf Kihara, Job Maguta Kinyua, Michael Nyawira, Sylvia Notenbaert, An Maria Omer |
| author_sort | Bolo, Peter Omondi |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rangelands occupy 25% of the total land surface globally. In Africa, rangelands are estimated to cover 66% of the land surface, although there are variations from country to country. In Eastern Africa, for example, land surface coverage of rangeland areas varies from 44% in Uganda and 65% in Ethiopia to 74% in Tanzania and over 80% in Kenya. Rangelands have environmental, social and economic benefits, including support to national economies through tourism and employment.
In Kenya, tourism, much of which is attributed to rangelands, accounts for 13% of the gross domestic product. In Tanzania, tourism contributed 9.0% of the total GDP, supporting 26% of total exports, 8.2% of the total employment, and 8.7% of total investment in the year 2017. Despite their benefits, rangelands are under threat of continued degradation driven by anthropogenic and natural causes. Natural causes of rangeland degradation include climate change and variabilities, aridity and desertification, drought, as well as alien species invasion. Anthropogenic rangeland degradation can manifest through agricultural activities and associated developmental practices, overstocking and overgrazing, as well as breakdown of social structures and government policies/by-laws.
Continuous overgrazing and overstocking not only affect soil physical (compaction, breakdown of aggregates) but also chemical (soil pH and salinization, nutrient leaching, diminishing organic matter content), and biological properties. These decrease rangeland production potentials. However, numerous strategies to arrest and remedy rangeland degradation, such as rangeland re-vegetation, water harvesting, soil surface scarification, and livestock grazing management are available. This report addresses rangeland degradation and potential control measures with a strong focus on soil aspects. |
| format | Artículo preliminar |
| id | CGSpace102393 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | International Center for Tropical Agriculture |
| publisherStr | International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace1023932025-11-05T18:01:55Z Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies Bolo, Peter Omondi Sommer, Rolf Kihara, Job Maguta Kinyua, Michael Nyawira, Sylvia Notenbaert, An Maria Omer degradation monitoring soil chemicophysical properties climate change productivity soil geographical information systems land degradation livestock Rangelands occupy 25% of the total land surface globally. In Africa, rangelands are estimated to cover 66% of the land surface, although there are variations from country to country. In Eastern Africa, for example, land surface coverage of rangeland areas varies from 44% in Uganda and 65% in Ethiopia to 74% in Tanzania and over 80% in Kenya. Rangelands have environmental, social and economic benefits, including support to national economies through tourism and employment. In Kenya, tourism, much of which is attributed to rangelands, accounts for 13% of the gross domestic product. In Tanzania, tourism contributed 9.0% of the total GDP, supporting 26% of total exports, 8.2% of the total employment, and 8.7% of total investment in the year 2017. Despite their benefits, rangelands are under threat of continued degradation driven by anthropogenic and natural causes. Natural causes of rangeland degradation include climate change and variabilities, aridity and desertification, drought, as well as alien species invasion. Anthropogenic rangeland degradation can manifest through agricultural activities and associated developmental practices, overstocking and overgrazing, as well as breakdown of social structures and government policies/by-laws. Continuous overgrazing and overstocking not only affect soil physical (compaction, breakdown of aggregates) but also chemical (soil pH and salinization, nutrient leaching, diminishing organic matter content), and biological properties. These decrease rangeland production potentials. However, numerous strategies to arrest and remedy rangeland degradation, such as rangeland re-vegetation, water harvesting, soil surface scarification, and livestock grazing management are available. This report addresses rangeland degradation and potential control measures with a strong focus on soil aspects. 2019-07 2019-07-31T20:40:56Z 2019-07-31T20:40:56Z Working Paper https://hdl.handle.net/10568/102393 en Open Access application/pdf International Center for Tropical Agriculture Bolo PO; Sommer R; Kihara J; Kinyua M; Nyawira S; Notenbaert A. 2019. Rangeland degradation: Causes, consequences, monitoring techniques and remedies. Working Paper. CIAT Publication No. 478. International Center for Tropical Agriculture (CIAT). Nairobi, Kenya. 23 p. |
| spellingShingle | degradation monitoring soil chemicophysical properties climate change productivity soil geographical information systems land degradation livestock Bolo, Peter Omondi Sommer, Rolf Kihara, Job Maguta Kinyua, Michael Nyawira, Sylvia Notenbaert, An Maria Omer Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies |
| title | Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies |
| title_full | Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies |
| title_fullStr | Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies |
| title_full_unstemmed | Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies |
| title_short | Rangeland Degradation: Causes, Consequences, Monitoring Techniques and Remedies |
| title_sort | rangeland degradation causes consequences monitoring techniques and remedies |
| topic | degradation monitoring soil chemicophysical properties climate change productivity soil geographical information systems land degradation livestock |
| url | https://hdl.handle.net/10568/102393 |
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