Niveles de LAI/fPAR en superficies afectadas por incendios forestales en Aragón: Análisis mediante el producto MCD15A2 de MODIS
Jiménez Ruano, Adrián (Universidad de Zaragoza) ; Pérez-Cabello, Fernando (Universidad de Zaragoza) ; Montorio Llovería, Raquel (Universidad de Zaragoza)
Resumen: El índice de área foliar (LAI) y la fracción de radiación activa fotosintética absorbida por la vegetación (fPAR) son variables relacionadas con la estructura del dosel vegetal que pueden aportar nuevas claves en la comprensión del proceso de regeneración vegetal en zonas quemadas. En este contexto, el objetivo del trabajo es caracterizar diferentes superficies quemadas en Aragón en función del producto MDC15A2 (LAI/fPAR) de MODIS. Se realizan dos tipos diferentes de análisis: (1) análisis estático de los valores de LAI/fPAR a partir del compuesto de 2010; (2) seguimiento multianual en 6 grandes incendios ocurridos en la década de los 2000, representativos de condiciones ambientales diferentes. El proceso metodológico se basa en la selección de 18 incendios forestales (> 500 ha, ocurridos entre 1975-2010) que dispusieran de la cartografía digital; y en la descarga del producto MCD13A2 de MODIS (compuestos estacionales de 8 días, primera semana de mayo y septiembre). Se ha identificado un patrón temporal de recuperación en los valores de LAI. En incendios ocurridos hace más de 35 años se recogen valores promedio de LAI >1 (1,13/1,40, en septiembre y mayo respectivamente), y valores de fPAR bajos (~ 0,5). Mientras, un año después del fuego los valores promedio de LAI/fPAR no superan el 0,20/0,40, respectivamente. Por otro lado, unos meses tras el fuego se han registrado valores promedio de LAI <0,25. En términos generales, el producto MODIS MDC15A2 (LAI/fPAR) presenta un enorme potencial en el análisis cartográfico de los procesos biológicos de zonas quemadas, a pesar de los problemas de interpretación derivados de la resolución espacial del producto.
The Leaf area index (LAI) and the Fractional Photosynthetically Active Radiation (fPAR) are variables related to the structure of the plant canopy that can provide new keys for the understanding of post-fire vegetation processes. In this context, the objective of this work is to characterize different burned areas in Aragon using the MDC15A2 (LAI/fPAR) product from MODIS. There are two different types of analysis: (1) static analysis of LAI/ fPAR values from the compound of 2010; (2) multi-year follow-up in 6 large fires occurred in the 2000s, representative of different environmental conditions. The methodological process is based on the selection of 18 forest fires (> 500 ha, occurred between 1975-2010) with digital cartography available; and the download of the product MCD13A2 MODIS (seasonal compounds of 8 days, first week of May and September). A temporal pattern of recovery in the values of LAI has been identified. Fires occurred more than 35 years ago have average LAI values > 1 (1.13/1.40, in September and May respectively), and low values of fPAR (~ 0.5). Meanwhile, a year after the fire LAI/fPAR average values do not exceed 0.20/0.40, respectively. On the other hand, a few months after the fire average LAI values < 0.25 have been observed. In general terms, the MODIS MDC15A2 (LAI/ fPAR) product features an enormous potential in the cartographic analysis of the biological processes of burned areas, despite the problems of interpretation derived from the spatial resolution of the product.
Idioma: Español
DOI: 10.3989/Pirineos.2016.171003
Año: 2016
Publicado en: Pirineos 171 (2016), e019 [13 pp]
ISSN: 0373-2568
Factor impacto SCIMAGO: 0.203 - Ecology, Evolution, Behavior and Systematics (Q4) - Ecology (Q4)
Tipo y forma: Article (Published version)
Área (Departamento): Área Análisis Geográfico Regi. (Dpto. Geograf. Ordenac.Territ.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
Exportado de SIDERAL (2020-02-21-13:17:36)
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The Leaf area index (LAI) and the Fractional Photosynthetically Active Radiation (fPAR) are variables related to the structure of the plant canopy that can provide new keys for the understanding of post-fire vegetation processes. In this context, the objective of this work is to characterize different burned areas in Aragon using the MDC15A2 (LAI/fPAR) product from MODIS. There are two different types of analysis: (1) static analysis of LAI/ fPAR values from the compound of 2010; (2) multi-year follow-up in 6 large fires occurred in the 2000s, representative of different environmental conditions. The methodological process is based on the selection of 18 forest fires (> 500 ha, occurred between 1975-2010) with digital cartography available; and the download of the product MCD13A2 MODIS (seasonal compounds of 8 days, first week of May and September). A temporal pattern of recovery in the values of LAI has been identified. Fires occurred more than 35 years ago have average LAI values > 1 (1.13/1.40, in September and May respectively), and low values of fPAR (~ 0.5). Meanwhile, a year after the fire LAI/fPAR average values do not exceed 0.20/0.40, respectively. On the other hand, a few months after the fire average LAI values < 0.25 have been observed. In general terms, the MODIS MDC15A2 (LAI/ fPAR) product features an enormous potential in the cartographic analysis of the biological processes of burned areas, despite the problems of interpretation derived from the spatial resolution of the product.
Idioma: Español
DOI: 10.3989/Pirineos.2016.171003
Año: 2016
Publicado en: Pirineos 171 (2016), e019 [13 pp]
ISSN: 0373-2568
Factor impacto SCIMAGO: 0.203 - Ecology, Evolution, Behavior and Systematics (Q4) - Ecology (Q4)
Tipo y forma: Article (Published version)
Área (Departamento): Área Análisis Geográfico Regi. (Dpto. Geograf. Ordenac.Territ.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2020-02-21-13:17:36)
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Articles > Artículos por área > Análisis Geográfico Regional
Record created 2016-12-19, last modified 2020-02-21