出版社：Consejo Superior de Investigaciones Científicas
摘要：This paper analyzes the spatial distribution of bioclimatic changes between the two climate normal periods (1951-1980 and 1981-2010) in the Spanish mainland. The analyses are performed using high density monthly datasets of precipitation, MOPREDAS, and mean temperatures, MOTEDAS. Both datasets cover the period of 1951-2010 and have been analyzed in their grid version (10x10 km). The characterization of the total amount of pixels (5234) followed the .Global Bioclimatics. from Rivas-Martinez to identify its Continentality, Macrobioclimate, Bioclimate, Bioclimatic Variant, Thermotype and Ombrotype. The results were quantified in spatial percentages of occupancy for each of the Bioclimatic Units and for each normal period. During the second period, Continentality, annual and summer Xericity, extension of all Mediterranean Bioclimates, Thermicity and dry Ombrotypes increased. Spatial comparison between the two periods suggests consistent gradual changes between Bioclimatic Units and spatial coherence. Results suggest that changes have occurred mostly in northern Spanish mainland and that they have not been as intense or extensive as one might think from previous studies.
