Análise de impacto climático extremo, a partir de imagens de sensores remotos, nos manguezais da Reserva Municipal de Desenvolvimento Sustentável do Piraquê Açu- Mirim em Aracruz (ES)
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Universidade Federal de Viçosa
Abstract
Dentre os variados ambientes presentes no planeta, que merecem a devida atenção, por possuírem particularidades e especificidades de ordens químicas, físicas e biológicas, faz-se um destaque para os manguezais. Os manguezais são ecossistemas tropicais localizados em locais específicos das planícies costeiras onde há o encontro de águas continentais e oceânicas. São fornecedores de diversos serviços ecossistêmicos, que variam da escala local à global. Devido a sua localização e especificidade esses ecossistemas também se colocam numa posição de fragilidade e, portanto, sensíveis às mudanças bruscas como, por exemplo, as causadas por alterações significativas das condições de tempo e clima, que também podem estar relacionadas ao aquecimento global. Diante disso, essa pesquisa teve como objetivo geral avaliar a eficácia dos índices Normalized Difference Vegetation Indexd (NDVI), Soil-adjusted vegetation índex (SAVI), Leaf area index (LAI), CO 2 flux, Normalizeed Difference Watter Index (NDWI) e Land Surface Temperature (LST) no registro das consequências do evento climático extremo, tempestade de granizo, ocorrido no dia 1 de junho de 2016 nos mangues da Reserva de Desenvolvimento Sustentável Municipal Piraquê Açu-Mirim, localizada em Aracruz (ES) no Brasil. Para isso, foi utilizado imagens de sensores orbitais para o período de 2015 e 2020 de modo a fazer comparações entre o antes e o depois do evento. Os resultados são compostos tanto por mapas temáticos de cada índice como, também, por gráficos de estatística descritiva, que foram gerados a partir de pontos amostrais. Desse modo, após gerar esses produtos fez-se investidas a campo com o intuito de verificar se os resultados obtidos com os índices eram correlatos com a realidade dos locais. Esse processo, foi fundamental para o escopo da pesquisa, pois além de confirmar a capacidade dos índices em registrar o impacto, em diferentes graus (menor, média e maior), possibilitou identificar quais índices obtiveram maior precisão. Palavras-chave: Manguezais. Índices de vegetação. Ecossistema costeiro. Sensoriamento remoto. Mudança na paisagem.
Among the various gifts, which are exclusively for man, for having peculiarities and specificities that stand out on the planet, physical and biological, they are one. Manis are tropical ecosystems in natural locations on the beaches of continental waters and oceans. They are providers of various ecosystem services, ranging from local to global scale. Its location is also characterized by these ecosystem specificities, which can also be considered as, for example, important weather and climate changes, which can also be in line with the characteristics of the global climate. Therefore, this research had the general objective of evaluating the normalized difference vegetation indices (NDVI), adjusted soil index (LAI), normalized difference CO2 flow index (NDWI) and CO2 flow index (NDWI) Surface Temperature (LST) in the record of the consequences of the extreme weather event, hail storm, which occurred on June 1, 2016 in the mangroves of the Piraquê Açu-Mirim Municipal Sustainable Development Reserve, located in Aracruz (ES) in Brazil. For this, images from orbital sensors were used for the period of 2015 and 2020 in order to make comparisons between before and after the event. The results are composed both of points by thematic maps of each, as well as by graphs of descriptive statistics, which were generated from a sample. In this way, after generating products, investments were made in the field in order to verify if the results obtained with the indices were correlated with the reality of the places. This process was fundamental for the scope of the research, because in addition to confirming the ability of the indices to record the impact, in different degrees (lower, medium and greater), it made it possible to identify which indices were more accurate. Keywords: Mangrove. Vegetation index. Coastal ecosystem. Remote sensing. Change in landscape.
Among the various gifts, which are exclusively for man, for having peculiarities and specificities that stand out on the planet, physical and biological, they are one. Manis are tropical ecosystems in natural locations on the beaches of continental waters and oceans. They are providers of various ecosystem services, ranging from local to global scale. Its location is also characterized by these ecosystem specificities, which can also be considered as, for example, important weather and climate changes, which can also be in line with the characteristics of the global climate. Therefore, this research had the general objective of evaluating the normalized difference vegetation indices (NDVI), adjusted soil index (LAI), normalized difference CO2 flow index (NDWI) and CO2 flow index (NDWI) Surface Temperature (LST) in the record of the consequences of the extreme weather event, hail storm, which occurred on June 1, 2016 in the mangroves of the Piraquê Açu-Mirim Municipal Sustainable Development Reserve, located in Aracruz (ES) in Brazil. For this, images from orbital sensors were used for the period of 2015 and 2020 in order to make comparisons between before and after the event. The results are composed both of points by thematic maps of each, as well as by graphs of descriptive statistics, which were generated from a sample. In this way, after generating products, investments were made in the field in order to verify if the results obtained with the indices were correlated with the reality of the places. This process was fundamental for the scope of the research, because in addition to confirming the ability of the indices to record the impact, in different degrees (lower, medium and greater), it made it possible to identify which indices were more accurate. Keywords: Mangrove. Vegetation index. Coastal ecosystem. Remote sensing. Change in landscape.
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SILVA, Marco Antonio Saraiva da. Análise de impacto climático extremo, a partir de imagens de sensores remotos, nos manguezais da Reserva Municipal de Desenvolvimento Sustentável do Piraquê Açu- Mirim em Aracruz (ES). 2022. 107 f. Dissertação (Mestrado em Geografia) - Universidade Federal de Viçosa, Viçosa. 2022.
