Climate and land use induced risks to watershed services in the Nyando river basin, Kenya
Climate change and land use change are two forces influencing the hydrology of watersheds and their ability to provide ecosystem services, such as clean and well-regulated streamflow and control of soil erosion and sediment yield. The Soil Water Assessment Tool, SWAT, a distributed, watershed-scale...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
2011
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/34973 |
| _version_ | 1855522800713859072 |
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| author | Gathenya M Mwangi H Coe, R. Sang J |
| author_browse | Coe, R. Gathenya M Mwangi H Sang J |
| author_facet | Gathenya M Mwangi H Coe, R. Sang J |
| author_sort | Gathenya M |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Climate change and land use change are two forces influencing the hydrology of watersheds and their ability to provide ecosystem services, such as clean and well-regulated streamflow and control of soil erosion and sediment yield. The Soil Water Assessment Tool, SWAT, a distributed, watershed-scale hydrological model was used with 18 scenarios of rainfall, temperature and infiltration capacity of land surface to investigate the spatial distribution of watershed services over the 3587 km2 Nyando basin in Western Kenya and how it is affected by these two forces. The total annual water yield varied over the 50 sub-basins from 35 to 600 mm while the annual sediment yield ranged from 0 to 104 tons ha−1. Temperature change had a relatively minor effect on streamflow and sediment yield compared to change in rainfall and land surface condition. Improvements in land surface condition that result in higher infiltration are an effective adaptation strategy to moderate the effects of climate change on supply of watershed services. Spatial heterogeneity in response to climate and land use change is large, and hence it is necessary to understand it if interventions to modify hydrology or adapt to climate change are to be effective. |
| format | Journal Article |
| id | CGSpace34973 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace349732024-11-15T08:52:25Z Climate and land use induced risks to watershed services in the Nyando river basin, Kenya Gathenya M Mwangi H Coe, R. Sang J agriculture climate watershed management hydrology Climate change and land use change are two forces influencing the hydrology of watersheds and their ability to provide ecosystem services, such as clean and well-regulated streamflow and control of soil erosion and sediment yield. The Soil Water Assessment Tool, SWAT, a distributed, watershed-scale hydrological model was used with 18 scenarios of rainfall, temperature and infiltration capacity of land surface to investigate the spatial distribution of watershed services over the 3587 km2 Nyando basin in Western Kenya and how it is affected by these two forces. The total annual water yield varied over the 50 sub-basins from 35 to 600 mm while the annual sediment yield ranged from 0 to 104 tons ha−1. Temperature change had a relatively minor effect on streamflow and sediment yield compared to change in rainfall and land surface condition. Improvements in land surface condition that result in higher infiltration are an effective adaptation strategy to moderate the effects of climate change on supply of watershed services. Spatial heterogeneity in response to climate and land use change is large, and hence it is necessary to understand it if interventions to modify hydrology or adapt to climate change are to be effective. 2011-04 2014-02-19T07:59:27Z 2014-02-19T07:59:27Z Journal Article https://hdl.handle.net/10568/34973 en Limited Access Cambridge University Press Gathenya M, Mwangi H, Coe R, Sang J. 2011. Climate and land use induced risks to watershed services in the Nyando river basin, Kenya. Experimental Agriculture 47 (2): 339-356. |
| spellingShingle | agriculture climate watershed management hydrology Gathenya M Mwangi H Coe, R. Sang J Climate and land use induced risks to watershed services in the Nyando river basin, Kenya |
| title | Climate and land use induced risks to watershed services in the Nyando river basin, Kenya |
| title_full | Climate and land use induced risks to watershed services in the Nyando river basin, Kenya |
| title_fullStr | Climate and land use induced risks to watershed services in the Nyando river basin, Kenya |
| title_full_unstemmed | Climate and land use induced risks to watershed services in the Nyando river basin, Kenya |
| title_short | Climate and land use induced risks to watershed services in the Nyando river basin, Kenya |
| title_sort | climate and land use induced risks to watershed services in the nyando river basin kenya |
| topic | agriculture climate watershed management hydrology |
| url | https://hdl.handle.net/10568/34973 |
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