Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfires

Since the 70s in central Chile, the expansion of forest plantations has been one of the main causes of landscape modification, being influenced by changes in land cover. Considering the national context of the forest fires that occurred during the summer of 2017, there is a generalized opinion that...

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Main Authors: Vannia Ruiz, Juan Munizaga, Alejandro Salazar Burrows
Format: Article
Language:English
Published: Universidad de Chile, Departamento de Geografía 2017-12-01
Series:Investigaciones Geográficas
Online Access:https://investigacionesgeograficas.uchile.cl/index.php/IG/article/view/48040
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spelling doaj-9ddd3e8268124277bc3a0e6be7f8f0f82020-11-24T21:04:01ZengUniversidad de Chile, Departamento de GeografíaInvestigaciones Geográficas0718-95750719-53702017-12-0154234010.5354/0719-5370.2017.4804048040Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfiresVannia Ruiz0Juan Munizaga1Alejandro Salazar Burrows2Pontificia Universidad Católica de ChileUniversidad de ConcepciónPontificia Universidad Católica de ChileSince the 70s in central Chile, the expansion of forest plantations has been one of the main causes of landscape modification, being influenced by changes in land cover. Considering the national context of the forest fires that occurred during the summer of 2017, there is a generalized opinion that the occurrence of these events is related to the proximity and approach of the plantations to urban areas, especially in the Valparaíso Metropolitan Area (AMV). From this perspective, the decrease in the distance between the expansion of forest plantations and the expansion of urban land in the AMV was analyzed using a supervised classification of Landsat images for the years 1989 and 2015. Additionally, an analysis is made of the degree of severity of fires and landscape metrics are calculated through the FRAGSTATS program. The main results show an increase in area for forest plantations for the year 2015, doubling its size compared to 1989. From the metrics studied a greater heterogeneity was observed in the landscape. With regard to the severity index, a greater degree is observed in forest plantations with respect to other coverings such as agriculture or shurblands.https://investigacionesgeograficas.uchile.cl/index.php/IG/article/view/48040
collection DOAJ
language English
format Article
sources DOAJ
author Vannia Ruiz
Juan Munizaga
Alejandro Salazar Burrows
spellingShingle Vannia Ruiz
Juan Munizaga
Alejandro Salazar Burrows
Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfires
Investigaciones Geográficas
author_facet Vannia Ruiz
Juan Munizaga
Alejandro Salazar Burrows
author_sort Vannia Ruiz
title Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfires
title_short Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfires
title_full Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfires
title_fullStr Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfires
title_full_unstemmed Forest plantations and its extension towards urban areas in metropolitan Valparaiso and associations with the increase of wildfires
title_sort forest plantations and its extension towards urban areas in metropolitan valparaiso and associations with the increase of wildfires
publisher Universidad de Chile, Departamento de Geografía
series Investigaciones Geográficas
issn 0718-9575
0719-5370
publishDate 2017-12-01
description Since the 70s in central Chile, the expansion of forest plantations has been one of the main causes of landscape modification, being influenced by changes in land cover. Considering the national context of the forest fires that occurred during the summer of 2017, there is a generalized opinion that the occurrence of these events is related to the proximity and approach of the plantations to urban areas, especially in the Valparaíso Metropolitan Area (AMV). From this perspective, the decrease in the distance between the expansion of forest plantations and the expansion of urban land in the AMV was analyzed using a supervised classification of Landsat images for the years 1989 and 2015. Additionally, an analysis is made of the degree of severity of fires and landscape metrics are calculated through the FRAGSTATS program. The main results show an increase in area for forest plantations for the year 2015, doubling its size compared to 1989. From the metrics studied a greater heterogeneity was observed in the landscape. With regard to the severity index, a greater degree is observed in forest plantations with respect to other coverings such as agriculture or shurblands.
url https://investigacionesgeograficas.uchile.cl/index.php/IG/article/view/48040
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