Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques

23 páginas, 11 figuras, 4 tablas.-- El documento en word es la versión post-print del artículo.

Detalhes bibliográficos
Autores: Vicente Serrano, Sergio M., Cuadrat, José María, Romo, Alfredo
Formato: artículo
Fecha de publicación:2006
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/35519
Acesso em linha:http://hdl.handle.net/10261/35519
Access Level:acceso abierto
Palavra-chave:Remote sensing
NDVI
Temporal variability of vegetation
Regression-based interpolation
Land cover types
Mediterranean region
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spelling Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniquesVicente Serrano, Sergio M.Cuadrat, José MaríaRomo, AlfredoRemote sensingNDVITemporal variability of vegetationRegression-based interpolationLand cover typesMediterranean region23 páginas, 11 figuras, 4 tablas.-- El documento en word es la versión post-print del artículo.This paper analyses the role of climatic aridity on the spatial differences of vegetation activity and its inter-annual variability in a semi-arid region of the North East of the Iberian Peninsula. The vegetation activity was quantified by means of a monthly Normalized Difference Vegetation Index (NDVI) database from NOAA–AVHRR satellite images (1987–2000) at 1 km2 of spatial resolution. Coefficients of variation (CoV) from temporal NDVI series were also calculated. The greater temporal variability of NDVI was recorded in areas with low vegetation cover (steppe and dry farming lands), whereas the lowest temporal variability of NDVI was recorded in the irrigated lands and forests located in the most humid areas. There is a strong and negative relationship between the CoV and the NDVI distribution, but we recorded important differences among land uses. Using maps of annual precipitation and temperature obtained by means of a regression-based method, we studied the influence of aridity on spatial patterns of NDVI and CoV values. The results show the high influence of aridity on the spatial distribution of vegetation activity in the Middle Ebro Valley. Aridity causes a general decrease of NDVI and an increase of CoV. Nevertheless, non-linear relationships between aridity and NDVI and CoV were recorded for the whole of the study area and for the different land uses. The relationships between aridity and vegetation patterns in the semi-arid region studied are discussed in depth.This work has been supported by the projects: ‘‘Caracterización espacio-temporal de las sequías en el valle medio del Ebro e identificación de sus impactos’’ (BSO2002-02743), ‘‘Variabilidad climática y dinámica forestal en ecosistemas de ecotono’’ (REN2003-07453), ‘‘El papel de las sequías en los procesos de modificación ambiental en el semiárido aragonés: evaluación mediante imágenes de satélite de alta resolución espacial y Sistemas de Información Geográfica’’ (CGL2005-04508/BOS) financed by the Spanish Comission of Science and Technology (CICYT) and FEDER, and ‘‘Programa de grupos de investigacio´ n consolidados’’ (grupo Clima, Cambio Global y Sistemas Naturales, BOA 48 of 20-04-2005), financed by the Aragón Government. Research of the first author was supported by postdoctoral fellowship by the Ministerio de Educación, Cultura y Deporte (Spain).Peer reviewedElsevier201120112006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/35519reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.jaridenv.2005.10.021info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/355192026-05-22T06:33:51Z
dc.title.none.fl_str_mv Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
title Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
spellingShingle Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
Vicente Serrano, Sergio M.
Remote sensing
NDVI
Temporal variability of vegetation
Regression-based interpolation
Land cover types
Mediterranean region
title_short Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
title_full Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
title_fullStr Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
title_full_unstemmed Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
title_sort Aridity influence on vegetation patterns in the middle Ebro Valley (Spain): Evaluation by means of AVHRR images and climate interpolation techniques
dc.creator.none.fl_str_mv Vicente Serrano, Sergio M.
Cuadrat, José María
Romo, Alfredo
author Vicente Serrano, Sergio M.
author_facet Vicente Serrano, Sergio M.
Cuadrat, José María
Romo, Alfredo
author_role author
author2 Cuadrat, José María
Romo, Alfredo
author2_role author
author
dc.subject.none.fl_str_mv Remote sensing
NDVI
Temporal variability of vegetation
Regression-based interpolation
Land cover types
Mediterranean region
topic Remote sensing
NDVI
Temporal variability of vegetation
Regression-based interpolation
Land cover types
Mediterranean region
description 23 páginas, 11 figuras, 4 tablas.-- El documento en word es la versión post-print del artículo.
publishDate 2006
dc.date.none.fl_str_mv 2006
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/35519
url http://hdl.handle.net/10261/35519
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.jaridenv.2005.10.021
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869404148736196608
score 15,811543

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