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| Calder, Ian R.. |
| This paper compares and contrasts the science and public perceptions of the role of forests in relation to water quantity (annual and seasonal runoff and recharge) and erosion. It is suggested that the disparity between the two perceptions needs to be addressed before we are in a position to devise and develop financing mechanisms for the conservation and protection of indigenous forests. Examples are given of three ‘interactive’ forest hydrology research programmes: in the UK, South Africa and Panama. Through the involvement of stakeholder groups, often with representatives comprising both the science and public perceptions, interactive research programmes were designed not only to derive new research findings but also to achieve better ‘ownership’ and... |
| Tipo: Journal Article |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/47860 |
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| Calder, Ian R.; Dye, Peter. |
| It is now well recognised that invasive alien species, particularly tree species, often have much increased water usage compared with native vegetation. Perhaps less well understood are the reasons for this increased water use and whether such increases should be expected from all species of invading alien trees under all environmental conditions. This paper examines the reasons for increased water use from trees as compared with short crops. From a knowledge of these reasons and a knowledge of the limiting processes (the Limits Concept) governing alien tree and native tree and short crop water use, (derived from case studies in India and RSA), we suggest that it is now possible to assess under what conditions high water use by aliens may occur. Inverse... |
| Tipo: Journal Article |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2001 |
URL: http://purl.umn.edu/47855 |
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