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| Swallow, Brent M.; Garrity, Dennis P.; van Noordwijk, Meine. |
| Research and policy on property rights, collective action and watershed management requires good understanding of ecological and socio-political processes at different social-spatial scales. On-farm soil erosion is a plot or farm-level problem that can be mitigated through more secure property rights for individual farmers, while the sedimentation of streams and deterioration of water quality are larger-scale problems that may require more effective collective action and / or more secure property rights at the village or catchment scale. Differences in social-political contexts across nations and regions also shape property rights and collective action institutions. For example, circumstances in the Lake Victoria basin in East Africa require particular... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy. |
| Ano: 2001 |
URL: http://purl.umn.edu/50050 |
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| Muthuri, C.W.; Ong, C.K.; Black, C.R.; Mati, Bancy Mbura; Ngumi, V.W.; van Noordwijk, Meine. |
| The WaNuLCAS (Water, Nutrient and Light Capture in Agroforestry Systems) model was used to investigate the impact of tree leafing phenology on the growth and water use of selected agroforestry tree species in semi-arid Central Kenya. Three agroforestry species, grevillea (Grevillea robusta), alnus (Alnus acuminate) and paulownia (Paulownia fortunei), respectively providing evergreen, semi-deciduous and deciduous leafing phenologies, were intercropped with maize. It was hypothesized that the deciduous habit of alnus and paulownia would reduce demand for water relative to the evergreen grevillea under conditions of limited supplies. WaNuLCAS simulations showed that altering leafing phenology from evergreen through semi-deciduous to deciduous decreased water... |
| Tipo: Journal Article |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/47874 |
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