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dc.contributor.author | Sánchez, Raimundo | es_ES |
dc.contributor.author | Briones, María José | es_ES |
dc.contributor.author | Gamboa, Alexis | es_ES |
dc.contributor.author | Monsalve, Rafaella | es_ES |
dc.contributor.author | Berroeta, Denis | es_ES |
dc.contributor.author | Valenzuela, Luis | es_ES |
dc.coverage.spatial | east=-71.542969; north=-35.675147; name=Chile | es_ES |
dc.date.accessioned | 2023-02-07T08:54:15Z | |
dc.date.available | 2023-02-07T08:54:15Z | |
dc.date.issued | 2023-01-30 | |
dc.identifier.issn | 1133-0953 | |
dc.identifier.uri | http://hdl.handle.net/10251/191686 | |
dc.description.abstract | [EN] The delimitation of burned areas is an important step for the study of forest fires, and the use of satellite remote sensing allows a scalable methodology. Previous studies use a dNBR threshold to determine the presence of burned areas, but this threshold is affected by vegetation variability determined by the geography of the study area and land use coverage. For them, the difference in the normalized index of burned areas (dNBR) was used to study the mega fires that affected the central zone of Chile in the summer of 2017. An automated methodology was developed that, based on satellite images and polygons of the burned areas provided by the National Forestry Corporation of Chile (CONAF) generates a set of dNBR thresholds differentiated by administrative region and land use. The application of differentiated dNBR thresholds significantly improves the accuracy of the burnt area delimitation model, although it does not achieve satisfactory results for all land uses. This methodological advance will make it possible to improve the design and control of policies for the prevention, conservation and restoration of ecosystems affected by forest fires. | es_ES |
dc.description.abstract | [ES] La delimitación de áreas quemadas es un paso importante para el estudio de incendios forestales, y el uso de teledetección satelital permite una metodología escalable. Estudios previos utilizan un umbral de dNBR para determinar la presencia de áreas incendiadas, pero este umbral se ve afectado por la variabilidad vegetacional determinada por la geografía del área de estudio y la cobertura de uso de suelos. Por ello, se utilizó la diferencia del índice normalizado de áreas quemadas (dNBR) para estudiar los mega incendios que afectaron la zona central de Chile en el verano de 2017. Se desarrolló una metodología automatizada que a partir de imágenes satelitales y de polígonos de las áreas incendiadas provistos por la Corporación Nacional Forestal de Chile (CONAF) genera un set de umbrales de dNBR diferenciados por región administrativa y uso de suelo. La aplicación de umbrales de dNBR diferenciados permite mejorar significativamente la precisión del modelo de delimitación de áreas quemadas, aunque no logra resultados satisfactorios para todos los usos de suelo. Este avance metodológico permitirá mejorar el diseño y fiscalización de políticas de prevención, conservación y restauración de ecosistemas afectados por incendios forestales. | es_ES |
dc.description.sponsorship | Los autores quisieran agradecer a CONAF por todo el apoyo entregado durante el desarrollo de este proyecto. También agradece el apoyo de la Fundación Data Observatory (DO) y del Centro de Estudios de Conflicto y Cohesión Social (COES) ANID/FONDAP/1513009. | es_ES |
dc.language | Español | es_ES |
dc.publisher | Universitat Politècnica de València | es_ES |
dc.relation.ispartof | Revista de Teledetección | es_ES |
dc.rights | Reconocimiento - No comercial - Compartir igual (by-nc-sa) | es_ES |
dc.subject | DNBR | es_ES |
dc.subject | Landsat-8 | es_ES |
dc.subject | Mega fire | es_ES |
dc.subject | Multispectral images | es_ES |
dc.subject | Burn severity | es_ES |
dc.subject | Area delimitation | es_ES |
dc.subject | Mega incendio | es_ES |
dc.subject | Imágenes multiespectrales | es_ES |
dc.subject | Severidad de incendios | es_ES |
dc.subject | Delimitación de áreas | es_ES |
dc.title | Delimitación de áreas quemadas en Chile a partir de umbrales dNBR ajustados según región y cubiertas del suelo | es_ES |
dc.title.alternative | Delimitation of burned areas in Chile based on dNBR thresholds adjusted according to region and land cover | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.4995/raet.2023.18155 | |
dc.relation.projectID | info:eu-repo/grantAgreement/COES//ANID%2FFONDAP%2F1513009 | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.description.bibliographicCitation | Sánchez, R.; Briones, MJ.; Gamboa, A.; Monsalve, R.; Berroeta, D.; Valenzuela, L. (2023). Delimitación de áreas quemadas en Chile a partir de umbrales dNBR ajustados según región y cubiertas del suelo. Revista de Teledetección. (61):43-58. https://doi.org/10.4995/raet.2023.18155 | es_ES |
dc.description.accrualMethod | OJS | es_ES |
dc.relation.publisherversion | https://doi.org/10.4995/raet.2023.18155 | es_ES |
dc.description.upvformatpinicio | 43 | es_ES |
dc.description.upvformatpfin | 58 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.issue | 61 | es_ES |
dc.identifier.eissn | 1988-8740 | |
dc.relation.pasarela | OJS\18155 | es_ES |
dc.contributor.funder | Centro de Estudios de Conflicto y Cohesión Social, Chile | es_ES |
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