CICYTTP   12500
CENTRO DE INVESTIGACION CIENTIFICA Y DE TRANSFERENCIA TECNOLOGICA A LA PRODUCCION
Unidad Ejecutora - UE
capítulos de libros
Título:
APLICACIONES DE LA TELEDETECCIÓN EN LA ESTIMACIÓN DE LAS EMISIONES DE CO2 POR QUEMAS DE ÁREAS INSULARES EN EL COMPLEJO LITORAL DEL RÍO PARANÁ (ARGENTINA).
Autor/es:
SIONE, W., P. ACEÑOLAZA, L. P. ZAMBONI, H.F. DEL VALLE, C. SERAFINI Y J. F. GALLARDO LANCHO
Libro:
EMISIONES DE GASES CON EFECTO INVERNADERO EN ECOSISTEMAS IBEROAMERICANOS.
Editorial:
Sociedad Iberoamericana de Física y Química Ambiental
Referencias:
Lugar: Salamanca; Año: 2009; p. 255 - 271
Resumen:
Abstract: Fires in wetland environments at the Paraná River Littoral Complex (Argentina) present recurrence controlled by anthropogenic, climatic and topographic factors, with local and global consequences. As a result, variations in the emissions of greenhouse gases can be found. During the period March/June 2008 there were a series of extraordinary fires that affected mainly grassland in the entire Littoral Complex. The aim of this study was to estimate CO2 emissions that occurred during the burning period of herbaceous plant communities in the area. To perform that, vegetation units were characterized from an unsupervised classification of the EVI index (Enhanced Vegetation Index, MODIS); as a result of, ten coverage units were identified; four of them corresponded to herbaceous vegetation. The burnt area (4550 km2) was determined by applying the index BAI (Burnt Area Index). Estimations of CO2 emissions were made based on data from herbaceous biomass, bibliographic and field data, using a parametric model that includes as variables: the proportion of burnt biomass (0.6), the relation of total C fixed in the biomass (Ct: 0.46), and the relation Ct/CO2 (3.67). Fires in the Paraná-river Littoral Complex produced CO2 emissions close to 20 Mg C ha-1 for grasses and bushlands, while for the pre-Delta areas the emissions were estimate between 18 and 34 Mg C ha-1. Estimated emissions for the evaluated period were higher than 7,7 Tg C-CO2; these levels of CO2 emissions are comparable to the annually produced by an Argentinean city with two millions inhabitants.