Spectral analysis for identification of plant ecosystems in Brazilian Atlantic Forest / Análise espectral para identificação de ecossistemas vegetais na Mata Atlântica Brasileira

The creation of the Guadeloupe EPA aimed to protect natural ecosystems and promote sustainable development in atlantic forest fragments existing in Pernambuco, Brazil. However, even with the State Decree formalizing these objectives, the ecosystems of the Atlantic Forest Biome present at the site suffered serious data by anthropic actions. For the study of these ecosystems, spectral analysis was an excellent channel of connection between geotechnologies and phytogeography of the site, allowing to study the location and type of vegetation in the extension of the Conservation Unit. From this perspective, the present research aimed to differentiate the atlantic forest ecosystems through spectral analysis. The results of spectral analysis allowed to indicate that in the identification of the Dense Ombrófila Forest the best specific combination is Atmospheric Penetration (PA) in its Pixel (PI) α. Mangrove in turn can be better identified in Infrared Vegetation (IVV) - Ranging from 150 to 220 Ash Levels (NC) - in pi α and also in PI β and PI γ varying in values very close to 50NC. Regarding restinga it is estimated that it can be accurately identified in Agriculture (AG), especially in pi γ, and also in Enhanced Vegetation Index (EVI) and Normalized Difference Water Index (NDWI), in all its Pixels. em seu Pixel (PI) α. O Mangue por sua vez pode ser melhor identificado no Infravermelho de Vegetação (IVV) - Variando de 150 a 220 Níveis de Cinza (NC) - no PI α e também nos PI β e PI γ variando em valores muito próximos aos 50NC. No que se refere a restinga estima-se que a mesma possa ser identificada de forma precisa em Agriculture (AG), sobretudo no PI γ, e também em Enhanced Vegetation Index (EVI) e Normalized Difference Water Index (NDWI), em todos seus Pixels. Palavras-chave: leitura de pixel, sensoriamento remoto, mangue, floresta ombrófila, restinga.