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dc.contributor.author
Fensholt, Rasmus
dc.contributor.author
Langanke, Tobias
dc.contributor.author
Rasmussen, Kjeld
dc.contributor.author
Reenberg, Anette
dc.contributor.author
Prince, Stephen D.
dc.contributor.author
Tucker, Compton
dc.contributor.author
Scholes, Robert J.
dc.contributor.author
Bao Le, Quang
dc.contributor.author
Bondeau, Alberte
dc.contributor.author
Eastman, Ron
dc.contributor.author
Epstein, Howard
dc.contributor.author
Gaughan, Andrea E.
dc.contributor.author
Hellden, Ulf
dc.contributor.author
Mbow, Cheikh
dc.contributor.author
Olsson, Lennart
dc.contributor.author
Paruelo, José
dc.contributor.author
Schweitzer, Christian
dc.contributor.author
Seaquist, Jonathan
dc.contributor.author
Wessels, Konrad
dc.date.available
2017-12-04T18:41:28Z
dc.date.issued
2012-02
dc.identifier.citation
Fensholt, Rasmus; Langanke, Tobias; Rasmussen, Kjeld; Reenberg, Anette; Prince, Stephen D.; et al.; Greenness in semi-arid areas across the globe 1981-2007 : an Earth Observing Satellite based analysis of trends and drivers; Elsevier Science Inc; Remote Sensing Of Environment; 121; 2-2012; 144-158
dc.identifier.issn
0034-4257
dc.identifier.uri
http://hdl.handle.net/11336/29588
dc.description.abstract
Semi-arid areas, defined as those areas of the world where water is an important limitation for plant growth, have become the subject of increased interest due to the impacts of current global changes and sustainability of human lifestyles. While many ground-based reports of declining vegetation productivity have been published over the last decades, a number of recent publications have shown a nuanced and, for some regions, positive picture. With this background, the paper provides an analysis of trends in vegetation greenness of semi-arid areas using AVHRR GIMMS from 1981 to 2007. The vegetation index dataset is used as a proxy for vegetation productivity and trends are analyzed for characterization of changes in semi-arid vegetation greenness. Calculated vegetation trends are analyzed with gridded data on potential climatic constraints to plant growth to explore possible causes of the observed changes. An analysis of changes in the seasonal variation of vegetation greenness and climatic drivers is conducted for selected regions to further understand the causes of observed inter-annual vegetation changes in semi-arid areas across the globe. It is concluded that semi-arid areas, across the globe, on average experience an increase in greenness (0.015 NDVI units over the period of analysis). Further it is observed that increases in greenness are found both in semi-arid areas where precipitation is the dominating limiting factor for plant production (0.019 NDVI units) and in semi-arid areas where air temperature is the primarily growth constraint (0.013 NDVI units). Finally, in the analysis of changes in the intra-annual variation of greenness it is found that seemingly similar increases in greenness over the study period may have widely different explanations. This implies that current generalizations, claiming that land degradation is ongoing in semi-arid areas worldwide, are not supported by the satellite based analysis of vegetation greenness.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Avhrr-Ndvi
dc.subject
Phenology
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Greenness in semi-arid areas across the globe 1981-2007 : an Earth Observing Satellite based analysis of trends and drivers
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-22T20:48:02Z
dc.journal.volume
121
dc.journal.pagination
144-158
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Fensholt, Rasmus. Universidad de Copenhagen; Dinamarca
dc.description.fil
Fil: Langanke, Tobias. Universidad de Copenhagen; Dinamarca
dc.description.fil
Fil: Rasmussen, Kjeld. Universidad de Copenhagen; Dinamarca
dc.description.fil
Fil: Reenberg, Anette. Universidad de Copenhagen; Dinamarca
dc.description.fil
Fil: Prince, Stephen D.. University of Maryland; Estados Unidos
dc.description.fil
Fil: Tucker, Compton. National Aeronautics and Space Administration. Goddart Institute for Space Studies; Estados Unidos
dc.description.fil
Fil: Scholes, Robert J.. Council for Scientific and Industrial Research; Sudáfrica
dc.description.fil
Fil: Bao Le, Quang. Universitaet Bonn; Alemania. ETH Zurich; Suiza
dc.description.fil
Fil: Bondeau, Alberte. Potsdam Institute for Climate Impact Research; Alemania. Institut Méditerranéen de Biodiversité et d; Francia
dc.description.fil
Fil: Eastman, Ron. Clark University; Estados Unidos
dc.description.fil
Fil: Epstein, Howard. University of Virginia; Estados Unidos
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Fil: Gaughan, Andrea E.. University of Florida; Estados Unidos
dc.description.fil
Fil: Hellden, Ulf. Lund University; Suecia
dc.description.fil
Fil: Mbow, Cheikh. Université Cheikh Anta Diop de Dakar; Senegal
dc.description.fil
Fil: Olsson, Lennart. Lund University; Suecia
dc.description.fil
Fil: Paruelo, José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.description.fil
Fil: Schweitzer, Christian. Helmholtz Centre for Environmental Research; Alemania
dc.description.fil
Fil: Seaquist, Jonathan. Lund University; Suecia
dc.description.fil
Fil: Wessels, Konrad. Council for Scientific and Industrial Research; Sudáfrica
dc.journal.title
Remote Sensing Of Environment
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.rse.2012.01.017
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0034425712000545
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