## Abstract Risk assessment of future land use changes with respect to their ecological impact is still an unsolved problem. The implementation of sustainable land use concepts for mesoscale catchments requires a methodology that is able to quantify the effects on the water balance of this ecosyste
Enhancement of area-specific land-use objectives for land development
β Scribed by U. B. Nidumolu; C. A. J. M. de Bie; H. van Keulen; A. K. Skidmore
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 424 KB
- Volume
- 15
- Category
- Article
- ISSN
- 1085-3278
- DOI
- 10.1002/ldr.636
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β¦ Synopsis
Abstract
Maps of landβuse classes and soil series were analysed to identify areas having specific priorities with respect to agricultural landβuse analysis. Remote sensing data supported by field investigations was used to generate landβuse and soil maps. Present relationships between soils and associated land cover/use are analysed and patterns in these relationships are identified using GIS techniques. Relationships observed on the basis of a priori knowledge of the area and the available statistics are compared and these relationships in the field and through interviews with farmers are correlated. This allows three landβuse analysis objectives to be formulated: crop management improvement; crop selection; and conservation. The results can be used to focus the efforts of planning and extension services in the area. The method was tested using a participatory rural appraisal in eighteen villages in which the areas for the three landβuse analysis objectives were identified. The findings are that the areas identified for crop management improvement require knowledge about management practices for a specific crop to optimize yield and water use. Most areas identified for crop selection are occupied by smallholder subsistence farmers with insufficient water for irrigation, and a lack of contact with the extension service. In these areas, identifying suitable crops to minimize risk and allow subsistence for the resourceβpoor farmers may be the priority. In areas identified for conservation the question to be addressed is whether to grow a crop at all, or to encourage alternative activities. Copyright Β© 2004 John Wiley & Sons, Ltd.
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