Woody plant-cover dynamics in Argentine Savannas from the 1880s to 2000s : the interplay of encroachment and agriculture conversion at varying scales

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dc.contributor.author González-Roglich, Mariano
dc.contributor.author Swenson, Jennifer J.
dc.contributor.author Villarreal, Diego
dc.contributor.author Jobbágy, Esteban G.
dc.contributor.author Jackson, Robert B.
dc.date.accessioned 2015-10-19T15:23:15Z
dc.date.available 2015-10-19T15:23:15Z
dc.date.copyright 2015
dc.date.issued 2015
dc.identifier.citation González-Roglich, M., Swenson, J.J., Villarreal, D., Jobbágy, E.G., & Jackson, R.B. (2015). Woody Plant-Cover Dynamics in Argentine Savannas from the 1880s to 2000s: The Interplay of Encroachment and Agriculture Conversion at Varying Scales. Ecosystems, 1-12. doi:10.1007/s10021-015-9841-5 en
dc.identifier.uri http://hdl.handle.net/10625/54830
dc.description.abstract Woody plant-cover dynamics can alter the provisioning of ecosystem services that humans rely on. However, our understanding of such dynamics today is often limited by the availability of reliable and detailed land-cover information in the past, before the onset of remote sensing technologies. In this study, we carefully extracted information from historical maps of the Caldenal savannas of central Argentina in the 1880s to generate a woody cover map that we compared to a 2000s dataset. Over about the last 120 years, woody cover increased across approximately 12,200 km2 (14.2% of the area). During the same period, about 5,000 km2 of the original woody area was converted to croplands and around 7,000 km2 to pastures, about the same total land area as was affected by encroachment. A smaller area, fine-scale analysis between the 1960s and the 2000s revealed that tree cover increased overall by 27%, shifting from open savannas to a mosaic of dense woodlands along with additional agricultural clearings. Statistical models indicate that woody cover dynamics in this region were affected by a combination of environmental and human factors. Over about the last 120 years, increases in woody plant cover have stored significant amounts of C (95.9 TgC), but not enough to compensate for losses from conversions to croplands and pastures (166.7 TgC), generating a regional net loss of 70.9 TgC. C losses could be even larger in the future if, as predicted, energy crops such as switchgrass, would trigger a new land-cover change phase in this region. en
dc.format.mimetype application/pdf
dc.language.iso en
dc.publisher Springer en
dc.subject PROSOPIS CALDENIA en
dc.subject WOODY PLANTS en
dc.subject DEFORESTATION en
dc.subject AGROECOLOGY en
dc.subject SEMIARID ZONE en
dc.subject ARGENTINA en
dc.subject LAND MANAGEMENT en
dc.subject CARBON STOCK ASSESSMENTS en
dc.subject LAND USE en
dc.subject ENVIRONMENTAL DEGRADATION en
dc.subject MAPS en
dc.subject SAVANNAS en
dc.title Woody plant-cover dynamics in Argentine Savannas from the 1880s to 2000s : the interplay of encroachment and agriculture conversion at varying scales en
dc.type Journal Article (peer-reviewed) en
idrc.project.number 106601
idrc.project.componentnumber 106601001
idrc.project.title Floods, Droughts and Farming on the Plains of Argentina and Paraguay, Pampas and Chaco Regions en
idrc.copyright.holder Springer Science+Business Media New York
idrc.dspace.access Open Access en
idrc.rims.adhocgroup IDRC SUPPORTED en
idrc.recordsserver.bcsnumber IC01-947-28
idrc.noaccess Due to copyright restrictions the full text of this research output is not available in the IDRC Digital Library or by request from the IDRC Library. / Compte tenu des restrictions relatives au droit d'auteur, le texte intégral de cet extrant de recherche n'est pas accessible dans la Bibliothèque numérique du CRDI, et il n'est pas possible d'en faire la demande à la Bibliothéque du CRDI. en


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