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@PhDThesis{Corsini:2018:AnMuMu,
               author = "Corsini, Christianne Riquetti",
                title = "An{\'a}lise multitemporal das mudan{\c{c}}as de biomassa da 
                         vegeta{\c{c}}{\~a}o secund{\'a}ria na Amaz{\^o}nia 
                         brasileira",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2018",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2018-05-24",
             keywords = "biomassa, trajet{\'o}rias, Amazonia, radar, TerraClass, 
                         emiss{\~o}es, biomass, trajectories, Amazon, emissions.",
             abstract = "A regenera{\c{c}}{\~a}o da vegeta{\c{c}}{\~a}o secund{\'a}ria 
                         em {\'a}reas desmatadas na Amaz{\^o}nia brasileira desempenha um 
                         papel importante no balan{\c{c}}o de emiss{\~o}es, funcionando 
                         como um sumidouro din{\^a}mico de carbono, e mitigando os 
                         impactos do desmatamento. O potencial para tal, entretanto, 
                         depende das taxas de crescimento desta vegeta{\c{c}}{\~a}o no 
                         tempo, que v{\~a}o refletir nos estoques de biomassa acumulado. 
                         Como esses estoques variam em rela{\c{c}}{\~a}o aos 
                         est{\'a}gios de regenera{\c{c}}{\~a}o e como a din{\^a}mica da 
                         vegeta{\c{c}}{\~a}o influencia nos padr{\~o}es de cresciment, 
                         ainda {\'e} pouco compreendida. Para entender os padr{\~o}es de 
                         acumulo de biomassa na vegeta{\c{c}}{\~a}o secund{\'a}ria nos 
                         diferentes est{\'a}gios de regenera{\c{c}}{\~a}o, foram 
                         utilizadas trajet{\'o}rias de cobertura da terra com base nas 
                         classes pasto sujo, regenera{\c{c}}{\~a}o com pasto e 
                         vegeta{\c{c}}{\~a}o secund{\'a}ria do sistema TerraClass e 
                         mapas multi-temporais de biomassa acima do solo (BAS) estimados a 
                         partir de dados de RADAR do PALSAR-ALOS. A partir destas 
                         informa{\c{c}}{\~o}es, foi quantificado o crescimento da 
                         vegeta{\c{c}}{\~a}o secund{\'a}ria em diferentes est{\'a}gios 
                         de regenera{\c{c}}{\~a}o na Amaz{\^o}nia brasileira para os 
                         anos de 2007, 2008, 2009 e 2010. Como o crescimento da 
                         vegeta{\c{c}}{\~a}o secund{\'a}ria {\'e} influenciada pelas 
                         condi{\c{c}}{\~o}es ambientais, tamb{\'e}m foi testado como os 
                         estoques de biomassa variaram em fun{\c{c}}{\~a}o de diferentes 
                         intensidades de m{\'a}ximo d{\'e}ficit h{\'{\i}}drico 
                         acumulado (MCWD) e com ocorr{\^e}ncia de fogo. Os resultados 
                         mostraram que a combina{\c{c}}{\~a}o do modelo de 
                         trajet{\'o}rias de classes de cobertura da terra com os mapas de 
                         biomassa foi consistente, uma vez que o padr{\~a}o de BAS foi 
                         crescente da trajet{\'o}ria representaviva do in{\'{\i}}cio da 
                         regenera{\c{c}}{\~a}o (Tr1) at{\'e} a trajet{\'o}ria de 
                         regenera{\c{c}}{\~a}o mais avan{\c{c}}ada (Tr7). A an{\'a}lise 
                         das mudan{\c{c}}as inter-anuais de BAS dentro de cada 
                         trajet{\'o}ria mostrou o incremento anual potencial no processo 
                         de regenera{\c{c}}{\~a}o do pasto sujo at{\'e} a 
                         regenera{\c{c}}{\~a}o com pasto, ao passo que as 
                         trajet{\'o}rias envolvendo a classe vegeta{\c{c}}{\~a}o 
                         secund{\'a}ria apresentaram redu{\c{c}}{\~a}o de biomassa em 
                         algum dos per{\'{\i}}odos analisados. A 
                         estratifica{\c{c}}{\~a}o da BAS nessas trajet{\'o}rias em 
                         fun{\c{c}}{\~a}o dos n{\'{\i}}veis de MCWD e ocorr{\^e}ncia 
                         de fogo revelou a magnitude do impacto deles sobre o ac{\'u}mulo 
                         de biomassa, sugerindo que a umidade tem papel fundamental no 
                         processo de crescimento, ao passo que a ocorr{\^e}ncia de fogo 
                         {\'e} o principal agente redutor do incremento. A an{\'a}lise 
                         das mudan{\c{c}}as inter-anuais de BAS por classe de 
                         dist{\'u}rbio revelou que o deficit h{\'{\i}}drico foi o 
                         principal causador de perdas de biomassa nas 
                         vegeta{\c{c}}{\~o}es mais avan{\c{c}}adas, enquanto o fogo foi 
                         mais danoso nas vegeta{\c{c}}{\~o}es secund{\'a}rias mais 
                         jovens. No balan{\c{c}}o final do carbono, as trajet{\'o}rias 
                         envolvendo pasto sujo e regenera{\c{c}}{\~a}o com pasto n{\~a}o 
                         apresentaram influ{\^e}ncia significativa, funcionando apenas 
                         como par{\^a}metro de crescimento. A vegeta{\c{c}}{\~a}o 
                         secund{\'a}ria, por outro lado, mostrou grande potencial de 
                         impacto nas emiss{\~o}es, respondendo por mais de 80% dos valores 
                         encontrados no balan{\c{c}}o final do carbono. ABSTRACT: The 
                         regrowth of secondary vegetation on deforested areas in the 
                         Brazilian Amazon plays an important role in the emissions balance, 
                         functioning as a dynamic carbon sink, and mitigating the impacts 
                         of deforestation. The potential for this, however, depends on the 
                         rates of vegetation growth over time, which will reflect in the 
                         accumulated biomass stocks. How these stocks vary in relation to 
                         the stages of regeneration and how the dynamics of vegetation 
                         influences growth patterns is still poorly understood. For 
                         understanding the patterns of carbon accumulation in secondary 
                         vegetation across different stages of regeneration, land cover 
                         trajectories based on the classes 'dirty pasture', 'regeneration 
                         with pasture' and 'secondary vegetation' of the TerraClass system 
                         and multi-temporal maps of above-ground biomass (BAS) estimated 
                         from the RADAR PALSAR-ALOS data were used. Based on these data, 
                         vegetation growth at different stages of regeneration in the 
                         Brazilian Amazon for the years 2007, 2008, 2009 and 2010 was 
                         quantified. As secondary vegetation growth is influenced by 
                         environmental conditions, it was also tested how the biomass 
                         stocks varied according to different intensities of maximum 
                         accumulated water deficit (MCWD) and of the occurrence of fire. 
                         The results showed that the combination of the trajectory model of 
                         land cover classes with the biomass maps was consistent. The 
                         estimated BAS increased from the trajectory representing the 
                         beginning of regeneration (Tr1) to the trajectory representing the 
                         most advanced regeneration stage (Tr7). The analysis of the 
                         inter-annual BAS changes within each trajectory showed the annual 
                         BAS increase from 'dirty pasture' to 'regeneration with pasture', 
                         while the trajectories involving the 'secondary vegetation' class 
                         presented a reduction in biomass in any of the periods analyzed. 
                         The stratification of BAS in these trajectories as a function of 
                         disturbance classes revealed the magnitude of their impact on the 
                         accumulation of biomass. The results suggested that water deficit 
                         plays a fundamental role in the growth process, whereas the 
                         occurrence of fire is the main agent constraining biomass increase 
                         throught time. The analysis of the inter-annual changes of BAS by 
                         classes of disturbance revealed that the water deficit was the 
                         main cause of biomass loss in the most advanced stages of 
                         vegetation regeneration, while fire was more damaging in the 
                         younger secondary vegetation. In the final carbon balance, the 
                         trajectories involving 'shurubby pasture' and 'regeneration with 
                         pasture' did not present significant influence, functioning only 
                         as a growth parameter. Secondary vegetation, on the other hand, 
                         showed great potential for impact on emissions, accounting for 
                         more than 80% of the values found in the final carbon balance.",
            committee = "von Randow, Celso (presidente) and Aguiar, Ana Paula Dutra de 
                         (orientador) and Arag{\~a}o, Luiz Eduardo Oliveira e Cruz de 
                         (orientador) and Longo, Marcos and Brito, Alan de",
         englishtitle = "Multi temporal analysis of biomass changes in secondary vegetation 
                         in the Brazilian Amazon",
             language = "pt",
                pages = "106",
                  ibi = "8JMKD3MGP3W34R/3R44PJP",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34R/3R44PJP",
           targetfile = "publicacao.pdf",
        urlaccessdate = "05 dez. 2020"
}


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