Spatiotemporal Analysis of an Urban Water-Supply Watershed

Detalhes bibliográficos
Autor(a) principal: Dourado, Gustavo Facincani
Data de Publicação: 2020
Outros Autores: Motta, Jaíza Santos, Filho, Antonio Conceição Paranhos, Scott, David Findlay, Gabas, Sandra Garcia, Facincani, Edna Maria
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anuário do Instituto de Geociências (Online)
Texto Completo: https://revistas.ufrj.br/index.php/aigeo/article/view/31361
Resumo: Sustainable management of water and land resources is currently a top priority on the agenda of many countries around the world, which demands information on the land cover changes in watersheds. In this study, maps of 1984, 1996, 2005 and 2016 were developed using false-color composites and the Normalized Difference Vegetation Index (NDVI) to identify the main changes occurred in the Córrego Guariroba’s stream catchment. This watershed is an Environmental Protection Area since 1995, when it became the urban water supply of the state’s capital of Mato Grosso do Sul, Brazil. In order to do that, the open source software QGIS and Landsat imagery were used to determine the land use and land cover changes. This information allowed the discussion of the possible pressures and environmental consequences of the changes in these periods. The watershed has been under intense agriculture and livestock farming activities, with most of the land surface occupied by pasturelands for cattle ranching and eucalyptus forestry. Results indicate that the direct influence of human activities drastically reduced the natural cover in the area, withimplication for the compliance of the Forest Code legislation. Anthropogenic land uses represent more than 57% of the total land cover in all years, reaching 79.70% in 2005. In 2016, there was an increase in native vegetation recovery, but despite this enhancement the human land use continues high (74.09%). Part of the small gain in native vegetation is due to reforestation plans carried out from 2010. The sedimentation of the water reservoir is visible in the 2016 image, forming sandbanks that extends for about 700 m in the distal portion of the Guariroba stream. The results of this study can be applied to a possible revision of the management plan of the watershed, considering the management of its water resources integrated to environmental planning and economic development. This type of analysis may aid in the decision-making process of governmental agencies, so that watersheds used for public water supply have restrictions of land use due to the risk of reducing the quantity and quality of water.
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spelling Spatiotemporal Analysis of an Urban Water-Supply WatershedLand cover; Landsat; Multi-temporal; NDVI; QGISSustainable management of water and land resources is currently a top priority on the agenda of many countries around the world, which demands information on the land cover changes in watersheds. In this study, maps of 1984, 1996, 2005 and 2016 were developed using false-color composites and the Normalized Difference Vegetation Index (NDVI) to identify the main changes occurred in the Córrego Guariroba’s stream catchment. This watershed is an Environmental Protection Area since 1995, when it became the urban water supply of the state’s capital of Mato Grosso do Sul, Brazil. In order to do that, the open source software QGIS and Landsat imagery were used to determine the land use and land cover changes. This information allowed the discussion of the possible pressures and environmental consequences of the changes in these periods. The watershed has been under intense agriculture and livestock farming activities, with most of the land surface occupied by pasturelands for cattle ranching and eucalyptus forestry. Results indicate that the direct influence of human activities drastically reduced the natural cover in the area, withimplication for the compliance of the Forest Code legislation. Anthropogenic land uses represent more than 57% of the total land cover in all years, reaching 79.70% in 2005. In 2016, there was an increase in native vegetation recovery, but despite this enhancement the human land use continues high (74.09%). Part of the small gain in native vegetation is due to reforestation plans carried out from 2010. The sedimentation of the water reservoir is visible in the 2016 image, forming sandbanks that extends for about 700 m in the distal portion of the Guariroba stream. The results of this study can be applied to a possible revision of the management plan of the watershed, considering the management of its water resources integrated to environmental planning and economic development. This type of analysis may aid in the decision-making process of governmental agencies, so that watersheds used for public water supply have restrictions of land use due to the risk of reducing the quantity and quality of water.Universidade Federal do Rio de JaneiroDourado, Gustavo FacincaniMotta, Jaíza SantosFilho, Antonio Conceição ParanhosScott, David FindlayGabas, Sandra GarciaFacincani, Edna Maria2020-01-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufrj.br/index.php/aigeo/article/view/3136110.11137/2019_4_238_248Anuário do Instituto de Geociências; Vol 42, No 4 (2019); 238-248Anuário do Instituto de Geociências; Vol 42, No 4 (2019); 238-2481982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJenghttps://revistas.ufrj.br/index.php/aigeo/article/view/31361/17868Copyright (c) 2020 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess2020-01-02T19:26:39Zoai:www.revistas.ufrj.br:article/31361Revistahttps://revistas.ufrj.br/index.php/aigeo/indexPUBhttps://revistas.ufrj.br/index.php/aigeo/oaianuario@igeo.ufrj.br||1982-39080101-9759opendoar:2020-01-02T19:26:39Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv
Spatiotemporal Analysis of an Urban Water-Supply Watershed
title Spatiotemporal Analysis of an Urban Water-Supply Watershed
spellingShingle Spatiotemporal Analysis of an Urban Water-Supply Watershed
Dourado, Gustavo Facincani
Land cover; Landsat; Multi-temporal; NDVI; QGIS
title_short Spatiotemporal Analysis of an Urban Water-Supply Watershed
title_full Spatiotemporal Analysis of an Urban Water-Supply Watershed
title_fullStr Spatiotemporal Analysis of an Urban Water-Supply Watershed
title_full_unstemmed Spatiotemporal Analysis of an Urban Water-Supply Watershed
title_sort Spatiotemporal Analysis of an Urban Water-Supply Watershed
author Dourado, Gustavo Facincani
author_facet Dourado, Gustavo Facincani
Motta, Jaíza Santos
Filho, Antonio Conceição Paranhos
Scott, David Findlay
Gabas, Sandra Garcia
Facincani, Edna Maria
author_role author
author2 Motta, Jaíza Santos
Filho, Antonio Conceição Paranhos
Scott, David Findlay
Gabas, Sandra Garcia
Facincani, Edna Maria
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Dourado, Gustavo Facincani
Motta, Jaíza Santos
Filho, Antonio Conceição Paranhos
Scott, David Findlay
Gabas, Sandra Garcia
Facincani, Edna Maria
dc.subject.none.fl_str_mv
dc.subject.por.fl_str_mv Land cover; Landsat; Multi-temporal; NDVI; QGIS
topic Land cover; Landsat; Multi-temporal; NDVI; QGIS
description Sustainable management of water and land resources is currently a top priority on the agenda of many countries around the world, which demands information on the land cover changes in watersheds. In this study, maps of 1984, 1996, 2005 and 2016 were developed using false-color composites and the Normalized Difference Vegetation Index (NDVI) to identify the main changes occurred in the Córrego Guariroba’s stream catchment. This watershed is an Environmental Protection Area since 1995, when it became the urban water supply of the state’s capital of Mato Grosso do Sul, Brazil. In order to do that, the open source software QGIS and Landsat imagery were used to determine the land use and land cover changes. This information allowed the discussion of the possible pressures and environmental consequences of the changes in these periods. The watershed has been under intense agriculture and livestock farming activities, with most of the land surface occupied by pasturelands for cattle ranching and eucalyptus forestry. Results indicate that the direct influence of human activities drastically reduced the natural cover in the area, withimplication for the compliance of the Forest Code legislation. Anthropogenic land uses represent more than 57% of the total land cover in all years, reaching 79.70% in 2005. In 2016, there was an increase in native vegetation recovery, but despite this enhancement the human land use continues high (74.09%). Part of the small gain in native vegetation is due to reforestation plans carried out from 2010. The sedimentation of the water reservoir is visible in the 2016 image, forming sandbanks that extends for about 700 m in the distal portion of the Guariroba stream. The results of this study can be applied to a possible revision of the management plan of the watershed, considering the management of its water resources integrated to environmental planning and economic development. This type of analysis may aid in the decision-making process of governmental agencies, so that watersheds used for public water supply have restrictions of land use due to the risk of reducing the quantity and quality of water.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-02
dc.type.none.fl_str_mv

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identifier_str_mv 10.11137/2019_4_238_248
dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/31361/17868
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http://creativecommons.org/licenses/by/4.0
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rights_invalid_str_mv Copyright (c) 2020 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
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dc.publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
dc.source.none.fl_str_mv Anuário do Instituto de Geociências; Vol 42, No 4 (2019); 238-248
Anuário do Instituto de Geociências; Vol 42, No 4 (2019); 238-248
1982-3908
0101-9759
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