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Mapping sensitivity to land degradation in Extremadura. SW Spain
Land degradation & development, 2009-03, Vol.20 (2), p.129-144
Contador, J.F. Lavado
Schnabel, S
Gutiérrez, A. Gómez
Fernández, M. Pulido
2009
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Contador, J.F. Lavado
Schnabel, S
Gutiérrez, A. Gómez
Fernández, M. Pulido
Titel
Mapping sensitivity to land degradation in Extremadura. SW Spain
Ist Teil von
Land degradation & development, 2009-03, Vol.20 (2), p.129-144
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2009
Quelle
Wiley Online Library All Journals
Beschreibungen/Notizen
An assessment of sensitivity to land degradation has been carried out in the Extremadura region, SW Spain, by means of a modelling approach developed by the European Commission funded MEDALUS project (Mediterranean Desertification and Land Use) which identifies such areas on the basis of an index (Environmentally Sensitive Area index, ESA index) that incorporates data on environmental quality (climate, vegetation, soil) as well as anthropogenic factors (management). Two maps of environmental sensitivity (ES) to degradation with different legend resolution (four and eight classes of sensitivity) have been made and tested by comparing classes of the legends with an extensive number (2690) of true field data gathered from plots distributed all over the study region. Independent variables of validation consisted of nine degradation-related types of data and the method tested the performance of the whole model and the statistical separability among classes of sensitivity, as well as the capability of the variables in delimiting the classes. Results showed a good performance of the whole model to both, the map of four and eighth classes of sensitivity. Separation among classes of sensitivity showed a slightly different behaviour of both maps, identifying transitional classes in the map of eight classes where classification could be improved in terms of the ranges of ESA index values assigned to the different classes. Copyright © 2008 John Wiley & Sons, Ltd.
Sprache
Englisch
Identifikatoren
ISSN: 1085-3278
eISSN: 1099-145X
DOI: 10.1002/ldr.884
Titel-ID: cdi_wiley_primary_10_1002_ldr_884_LDR884
Format
–
Schlagworte
climatic factors
,
desertification
,
environmental models
,
ESA index
,
extremadura
,
land degradation
,
land management
,
land use
,
MEDALUS
,
soil degradation
,
soil quality
,
Spain
,
thematic maps
,
validation
,
vegetation
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