A soil wetness class map for Scotland: New assessments of soil and climate data for land evaluation
Identifieur interne : 000E84 ( Istex/Checkpoint ); précédent : 000E83; suivant : 000E85A soil wetness class map for Scotland: New assessments of soil and climate data for land evaluation
Auteurs : A. Lilly [Royaume-Uni] ; K. B. Matthews [Royaume-Uni]Source :
- Geoforum [ 0016-7185 ] ; 1995.
Abstract
In many humid, temperate countries the soil water regime is one of the major factors determining land use. In Scotland prolonged saturation of the soils severely limits land use options across extensive areas. The assessment of these limitations within a standardized framework provides one of the essential datasets for use in the formulation of regional agricultural and land use policy. This work combines observed soil properties and soil map information with new climate maps. The spatial distribution of soils is derived from the digital 1:250,000 scale Soil Survey maps for Scotland with the soil assessments being made using information held in the Scottish soils database. These datasets are manipulated within geographic information system and relational database environments to produce an assessment of the soil water regimes for the dominant soil in each one kilometre square under prevailing climatic conditions. The synthesis revealed a number of deficiencies in both the original soil map and the soil assessment model. The soil map failed to sufficiently distinguish different categories of organic soils, whilst the model had to be adapted to differentiate soils on the basis of the topsoil organic matter contents and to accommodate soils with thin topsoils overlying slowly permeable drifts. The work serves to identify those areas which can be refined in the future by taking a more stochastic approach to the synthesis of these types of data.
Url:
DOI: 10.1016/0016-7185(94)90037-X
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