Fecha/hora: 09/06/2024 21:18:36

Biblioteca(s): | INIA Treinta y Tres.
Fecha corriente: | 24/06/2021
Fecha de la última actualización: | 24/06/2021
Autoria: | CASTAÑO-SÁNCHEZ, J.P.; IZAURRALE, R. C.; PRINCE, S. D.
Afiliación: | JOSÉ P. CASTAÑO-SÁNCHEZ, Department of Geographical Sciences, University of Maryland, USA // Pasture Systems and Watershed Management Research Unit, USDA-ARS, USA.; Department of Geographical Sciences, University of Maryland, USA.; STEPHEN D. PRINCE, Department of Geographical Sciences, University of Maryland, USA.
Título: | Land-use conversions from managed grasslands to croplands in Uruguay increase medium-term carbon emissions to the atmosphere.
Año de publicación: | 2021
Fuente/Imprenta: | Journal of Land Use Science, June 2021, Vol. 16, no. 3, p. 249-259. Doi: https://doi.org/10.1080/1747423X.2021.1933227
DOI: | 10.1080/1747423X.2021.1933227
Idioma: | Inglés
Notas: | Article history: Received 24 Jul 2020, Accepted 17 May 2021, Published online: 16 Jun 2021. Contact: José P. Castaño-Sánchez jcastano@terpmail.umd.edu
Contenido: | Globally, significant land conversions of traditionally managed temperate grasslands to croplands were taking place. Among these is South-Central Uruguay where changes in recent decades have highly likely impacted plant productivity, soil quality, and carbon fluxes at a regional scale. A geospatial version of the biophysical model EPIC was developed and validated (Geospatial-EPIC-UY). An analysis of the potential impact of the land use change on the carbon fluxes was performed, considering the conversion of all the suitable cropping areas over a 15-year period. Modeled net ecosystem exchange (NEE) showed that, on average, grasslands C emissions were close to neutral (0.1 Mg CO2 ha&#8722;1 year&#8722;1), while croplands contributed almost 7 times this value. Also, the inter-annual variation of grassland NEE was significantly less than that of the cropland. These results highlight the potential C losses under extended land conversions, which could be attenuated or even reverted if best management practices were implemented.
Palabras-Clave: | CARBON DYNAMICS; CARBON FLUXES; CROPLAND ECOSYSTEM; EPIC MODEL; NATURAL GRASSLAND ECOSYSTEM; NEE; NPP; REGIONAL SCALE; SOIL CARBON; URUGUAY.
Categoría del tema: | --
Registro original: | INIA Treinta y Tres (TT)
Ejemplares: | TT - (103303-1) - ADD - AP - DD - journal-land-use-science-2021/Castaño -  -  - DIS