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Título

Analysis of Spatial and Temporal Evolution of Vegetation Cover in the Spanish Central Pyrenees: Role of Human Management

AutorVicente Serrano, Sergio M. CSIC ORCID ; Lasanta Martínez, Teodoro CSIC ORCID ; Romo, Alfredo
Palabras claveVegetation evolution
Revegetation processes
Vegetation trends
Abandonment
Extensification
NDVI
NOAA-AVHRR
Pyrenees
Spain
Fecha de publicación2004
EditorSpringer Nature
CitaciónEnvironmental Management 34(6): 802-818 (2004)
ResumenA vegetation cover increase has been identified at global scales using satellite images and vegetation indices. This fact is usually explained by global climatic change processes such as CO2 and temperature increases. Nevertheless, although these causes can be important, the role of socioeconomic transformations must be considered in some places, since in several areas of Northern Hemisphere an important change in management practices has been detected. Rural depopulation and land abandonment have reactivated the natural vegetation regeneration processes. This work analyses the vegetation evolution in the central Spanish Pyrenees from 1982 to 2000. The analysis has been done by using calibrated-NDVI temporal series from NOAA-AVHRR images. A positive and significant trend in NDVI data has been identified from 1982 to 2000 coinciding with a temperature increase in the study area. However, the spatial differences in magnitude and the sign of NDVI trends are significant. The role of land management changes in the 20th century is considered as a hypothesis to explain the spatial differences in NDVI trends. The role of land-cover and human land-uses on this process has been analyzed. The highest increment of NDVI is detected in lands affected by abandonment and human extensification. The importance of management changes in vegetation growth is discussed, and we indicate that although climate has great importance in vegetal evolution, land-management changes can not be neglected in our study area.
Descripción17 páginas, 12 figuras, 4 tablas.-- El documento se encuentra en su versión post-print.
Versión del editorhttp://dx.doi.org/10.1007/s00267-003-0022-5
URIhttp://hdl.handle.net/10261/35737
DOI10.1007/s00267-003-0022-5
ISSN0364-152X
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