Análise do Sequestro de Carbono em Áreas de Caatinga do Semiárido Pernambucano

Resumo Diante do aumento das emissões dos gases do efeito estufa, o presente estudo analisou o sequestro de carbono em áreas de caatinga do município de Petrolina – PE, por meio de técnicas de sensoriamento remoto. Foram utilizadas imagens do sensor MODIS, referentes ao produto MOD17, o qual contém...

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Veröffentlicht in:Revista Brasileira de Meteorologia 2017-12, Vol.32 (4), p.585-599
Hauptverfasser: Brito Morais, Ygor Cristiano, Bezerra de Araújo, Maria do Socorro, de Moura, Magna Soelma Beserra, Galvíncio, Josiclêda Domiciano, de Queiroga Miranda, Rodrigo
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container_title Revista Brasileira de Meteorologia
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creator Brito Morais, Ygor Cristiano
Bezerra de Araújo, Maria do Socorro
de Moura, Magna Soelma Beserra
Galvíncio, Josiclêda Domiciano
de Queiroga Miranda, Rodrigo
description Resumo Diante do aumento das emissões dos gases do efeito estufa, o presente estudo analisou o sequestro de carbono em áreas de caatinga do município de Petrolina – PE, por meio de técnicas de sensoriamento remoto. Foram utilizadas imagens do sensor MODIS, referentes ao produto MOD17, o qual contém a estimativa da Produção primária bruta (GPP) e da Produção primária líquida (NPP). A coleta das imagens ocorreu para os anos de 2011 e 2012. No período chuvoso, as áreas de caatinga preservada apresentaram maiores valores de assimilação total (até 160 g C/m2 em janeiro de 2011) e sequestro de carbono, enquanto no final do período seco foram registrados valores inferiores a 20 g C/m2. Quanto ao total anual, em 2011 as áreas de caatinga preservada juntamente com a agricultura irrigada apresentaram os maiores valores de GPP (> 900 g C/m2), enquanto que em 2012 a GPP das áreas de caatinga variaram, em geral, de 500 a 600 g C/m2, com algumas áreas chegando a 700 g C/m2. A NPP, ou seja, o sequestro de carbono, variou de 500 a 700 g C/m2 em 2011 e de 100 a 400 g C/m2 em 2012. Desse modo, são necessárias medidas e elaboração de instrumentos políticos que visem à preservação dos remanescentes de caatinga do município de Petrolina, como forma de contribuir com mitigação do aquecimento global. Abstract Given the increasing emissions of greenhouse gases, the present study analyzed the carbon sequestration in savanna areas of the city of Petrolina - PE, via remote sensing techniques. Images from the MODIS sensor, for the product MOD17, which contains an estimated gross primary production (GPP) and net primary production (NPP). The collection of images was for the years 2011 and 2012. During the rainy season, the preserved savanna areas had higher overall assimilation of values (up to 160 g C/m in January 2011) and carbon sequestration, however the dry season stood out areas of irrigated agriculture. As the annual total in 2011 the areas of savanna preserved along with irrigated agriculture had the highest GPP values (> 900 g C/m2), while in 2012 the GPP of savanna areas ranged generally from 500 to 600 g C/m2, with some areas reaching 700 g C/m2. The NPP, ie carbon sequestration, ranged 500-600 g C/m2 in 2011 and 400 g C/m2 in 2012. Thus, measures are needed and development of policy instruments aimed at the conservation of remaining to scrub the city of Petrolina, in order to contribute to mitigating global warming.
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Foram utilizadas imagens do sensor MODIS, referentes ao produto MOD17, o qual contém a estimativa da Produção primária bruta (GPP) e da Produção primária líquida (NPP). A coleta das imagens ocorreu para os anos de 2011 e 2012. No período chuvoso, as áreas de caatinga preservada apresentaram maiores valores de assimilação total (até 160 g C/m2 em janeiro de 2011) e sequestro de carbono, enquanto no final do período seco foram registrados valores inferiores a 20 g C/m2. Quanto ao total anual, em 2011 as áreas de caatinga preservada juntamente com a agricultura irrigada apresentaram os maiores valores de GPP (&gt; 900 g C/m2), enquanto que em 2012 a GPP das áreas de caatinga variaram, em geral, de 500 a 600 g C/m2, com algumas áreas chegando a 700 g C/m2. A NPP, ou seja, o sequestro de carbono, variou de 500 a 700 g C/m2 em 2011 e de 100 a 400 g C/m2 em 2012. Desse modo, são necessárias medidas e elaboração de instrumentos políticos que visem à preservação dos remanescentes de caatinga do município de Petrolina, como forma de contribuir com mitigação do aquecimento global. Abstract Given the increasing emissions of greenhouse gases, the present study analyzed the carbon sequestration in savanna areas of the city of Petrolina - PE, via remote sensing techniques. Images from the MODIS sensor, for the product MOD17, which contains an estimated gross primary production (GPP) and net primary production (NPP). The collection of images was for the years 2011 and 2012. During the rainy season, the preserved savanna areas had higher overall assimilation of values (up to 160 g C/m in January 2011) and carbon sequestration, however the dry season stood out areas of irrigated agriculture. As the annual total in 2011 the areas of savanna preserved along with irrigated agriculture had the highest GPP values (&gt; 900 g C/m2), while in 2012 the GPP of savanna areas ranged generally from 500 to 600 g C/m2, with some areas reaching 700 g C/m2. The NPP, ie carbon sequestration, ranged 500-600 g C/m2 in 2011 and 400 g C/m2 in 2012. 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Foram utilizadas imagens do sensor MODIS, referentes ao produto MOD17, o qual contém a estimativa da Produção primária bruta (GPP) e da Produção primária líquida (NPP). A coleta das imagens ocorreu para os anos de 2011 e 2012. No período chuvoso, as áreas de caatinga preservada apresentaram maiores valores de assimilação total (até 160 g C/m2 em janeiro de 2011) e sequestro de carbono, enquanto no final do período seco foram registrados valores inferiores a 20 g C/m2. Quanto ao total anual, em 2011 as áreas de caatinga preservada juntamente com a agricultura irrigada apresentaram os maiores valores de GPP (&gt; 900 g C/m2), enquanto que em 2012 a GPP das áreas de caatinga variaram, em geral, de 500 a 600 g C/m2, com algumas áreas chegando a 700 g C/m2. A NPP, ou seja, o sequestro de carbono, variou de 500 a 700 g C/m2 em 2011 e de 100 a 400 g C/m2 em 2012. 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Foram utilizadas imagens do sensor MODIS, referentes ao produto MOD17, o qual contém a estimativa da Produção primária bruta (GPP) e da Produção primária líquida (NPP). A coleta das imagens ocorreu para os anos de 2011 e 2012. No período chuvoso, as áreas de caatinga preservada apresentaram maiores valores de assimilação total (até 160 g C/m2 em janeiro de 2011) e sequestro de carbono, enquanto no final do período seco foram registrados valores inferiores a 20 g C/m2. Quanto ao total anual, em 2011 as áreas de caatinga preservada juntamente com a agricultura irrigada apresentaram os maiores valores de GPP (&gt; 900 g C/m2), enquanto que em 2012 a GPP das áreas de caatinga variaram, em geral, de 500 a 600 g C/m2, com algumas áreas chegando a 700 g C/m2. A NPP, ou seja, o sequestro de carbono, variou de 500 a 700 g C/m2 em 2011 e de 100 a 400 g C/m2 em 2012. Desse modo, são necessárias medidas e elaboração de instrumentos políticos que visem à preservação dos remanescentes de caatinga do município de Petrolina, como forma de contribuir com mitigação do aquecimento global. Abstract Given the increasing emissions of greenhouse gases, the present study analyzed the carbon sequestration in savanna areas of the city of Petrolina - PE, via remote sensing techniques. Images from the MODIS sensor, for the product MOD17, which contains an estimated gross primary production (GPP) and net primary production (NPP). The collection of images was for the years 2011 and 2012. During the rainy season, the preserved savanna areas had higher overall assimilation of values (up to 160 g C/m in January 2011) and carbon sequestration, however the dry season stood out areas of irrigated agriculture. 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subjects Agriculture
Carbon
Carbon sequestration
Climate change
Conservation
Dry season
Environmental policy
Gases
Global warming
Greenhouse effect
Greenhouse gases
Instruments
MODIS
mudanças climáticas
Ocean circulation
Plankton
Primary production
Rainy season
Remote sensing
Remote sensing techniques
Remote sensors
semiárido
Sensing techniques
sensoriamento remoto
Sensors
sequestro de carbono
vegetação
Wet season
title Análise do Sequestro de Carbono em Áreas de Caatinga do Semiárido Pernambucano
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