%0 Conference Proceedings
%4 sid.inpe.br/marte2/2017/10.27.13.45.19
%2 sid.inpe.br/marte2/2017/10.27.13.45.20
%@isbn 978-85-17-00088-1
%F 59301
%T Land cover change trajectories in western Amazonia
%D 2017
%A Rosan, Thais Michele,
%A Anderson, Liana Oighenstein,
%@electronicmailaddress tmrgeo@gmail.com
%E Gherardi, Douglas Francisco Marcolino,
%E Aragão, Luiz Eduardo Oliveira e Cruz de,
%B Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)
%C Santos
%8 28-31 maio 2017
%I Instituto Nacional de Pesquisas Espaciais (INPE)
%J São José dos Campos
%P 4290-4297
%S Anais
%1 Instituto Nacional de Pesquisas Espaciais (INPE)
%X This paper aims to quantify the trajectories of deforestation and degradation in Acre State Brazilian Amazonia. For this proposed study, we used a series of remote sensing products from INPE: deforestation, degradation and land use data from PRODES, DEGRAD and TerraClass, respectively. We performed a spatial explicit pixel-by-pixel analysis to estimate the changes in trajectories between deforested and degraded areas, between 1997 and 2013. The results demonstrated that 77% of the deforested areas were replaced by pastures, 15% by secondary vegetation, 4% by other classes, 3.4% by mosaic occupations and only 0.3% by agriculture. Degraded areas between 2007 and 2013 presented 8% of conversion to pasture, 2% to other classes and 0.8% to mosaic occupations. The remaining 87% of the degraded areas were maintained as forests during this period. Therefore, in Acre state, direct forest conversion are used for pastures rather than agriculture, and forest degraded by fires or selective logging remains as degraded forests. In a long time span, it is possible that, if no further degradation reaches the impacted forests, they will recover as old growth forests with minimal or no impact in carbon emissions, but with unknown impacts on the forest structure and biodiversity.
%@language en
%3 59301.pdf