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Actualidades Biológicas
Article . 2010
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VALIDACIÓN PARA COLOMBIA DE LA ESTIMACIÓN DE ÁREA QUEMADA DEL PRODUCTO L3JRC EN EL PERIODO 2001-2007 VALIDATION OF THE L3JRC BURNED AREA PRODUCT ESTIMATION IN COLOMBIA FROM 2001 TO 2007

Authors: Anaya-Acevedo, Jesús A.; Chuvieco-Salinero, Emilio;

VALIDACIÓN PARA COLOMBIA DE LA ESTIMACIÓN DE ÁREA QUEMADA DEL PRODUCTO L3JRC EN EL PERIODO 2001-2007 VALIDATION OF THE L3JRC BURNED AREA PRODUCT ESTIMATION IN COLOMBIA FROM 2001 TO 2007

Abstract

Este documento presenta la validación del producto global de área quemada L3JRC en Colombia utilizando el método de matrices de confusión e imágenes de satélite Landsat como sustituto a la verdad terreno. El producto L3JRC, generado por Tansey et al. en el año 2007, es un mapa de áreas quemadas obtenido por teledetección con datos del instrumento SPOT-VEGETATION. La determinación del área quemada generada por los incendios se obtiene por teledetección gracias a la diferencia en reflectividad antes del fuego (vegetación) y después del fuego. La validación del producto demuestra clara tendencia hacia la omisión de áreas quemadas, aunque también con errores importantes por comisión. Sin tener en cuenta el tipo de error, se encontró que el producto L3JRC subestima en 40% la superficie quemada del país. Con las consideraciones en la fiabilidad se concluye que el promedio anual de área quemada en Colombia es de 14.807 km² aunque podría superar los 21.000 km² si se tienen en cuenta los altos valores de omisión y subestimación detectados en la validación. La región de la Orinoquia tiene más del 90% del área total del país, siendo los departamentos colombianos con mayor área quemada Vichada, Meta, Arauca y Casanare.This document presents a validation of the global burned area product (L3JRC) in Colombia, using the method of the confusion matrix where Landsat images are used as a proxy for fieldwork. The product L3JRC is a burned area map based on remote sensing SPOT-VEGETATION data and generated by Tansey et al. in 2007. Determination of burned area using satellite data is possible because of the difference in reflectance before and after a fire. A pattern toward larger omission errors was found in the validation process, although commission errors also were present. Disregarding the type of error, it was shown that the product L3JRC underestimates 40% of the burned area of the country. With this accuracy of assessment, it was concluded that the annual average burned area in Colombia during the annual study period was 14,807 km², taking into account omission values burned area may exceed 21.000 km². Orinoquia region has more than (90%), of the total burned area of the country, where Vichada, Meta, Arauca, and Casanare were the most affected Colombian departments.

Country
Colombia
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Keywords

Gases efecto invernadero, greenhouse gas emissions, QH301-705.5, gases efecto invernadero, Remote sensing, área quemada, Colombia, Área Quemada, Biomass burned area, remote sensing, Quema de biomasa, Greenhouse gas emissions, Teledetección, teledetección, quema de biomasa, biomass burned area, Biology (General)

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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