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Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2019-09-12T18:05:11Z No. of bitstreams: 1 2015 - Daniel Costa de Carvalho.pdf: 3256897 bytes, checksum: be3c8e0b6540565d132f8e62b51ec45b (MD5) Made available in DSpace on 2019-09-12T18:05:11Z (GMT). No. of bitstreams: 1 2015 - Daniel Costa de Carvalho.pdf: 3256897 bytes, checksum: be3c8e0b6540565d132f8e62b51ec45b (MD5) Previous issue date: 2015-11-26 CAPES The periodic diagnosis of the landscape becomes a fundamental aspect for understanding the patterns of organization of space due to the high dynamics of human activities in natural areas. Therefore, the landscape studies are considered an important resource for environmental issues, since they reveal how the geographical area is due to its use. In this context, the information from satellite sensors, combined with geoprocessing techniques, isotopic analyzes of the soil and dendrocronology assessments can help the characterization of landscape elements in the present and in the past. From the foregoing, the Ecological Station of Pirapitinga (ESP) has potential for studies of landscape changes caused by human actions. Located in the Tr?s Marias reservoir (MG), this Conservation Unit was flooded, winning aspect of river island for about 55 years ago and still getting fire protection since this season. From this season it is suspected that was significant changes of the landscape as appearance of new vegetation type and decrease of others. Thus, this research was based on the hypothesis that after the filling of the Tr?s Marias dam occurred significant changes in the landscape of EEP. Therefore, this study aimed to classify land cover classes and assess the spatio-temporal dynamics of the same in the EEP with the remote sensing, isotopic markers soil and dendrocronology analysis. All three tools used in this study corroborate the hypothesis that occurred a vegetation evolution over time. Analysis of the current and temporal landscape by remote sensing showed the expansion and retraction of vegetation types present in the EEP. The isotopic soil analysis revealed that all current vegetation types had a similar vegetational pattern in the past. The dendrocronology of Copaifera langsdorffii analysis revealed that individuals of this species were already present before filling the dam and probably the consolidation of vegetation type Mata Seca Sempre-Verde was from the 70s. O diagn?stico peri?dico da paisagem regional torna-se um aspecto fundamental para a compreens?o dos padr?es de organiza??o do espa?o em fun??o da elevada din?mica das atividades antr?picas em ?reas naturais. Com esta perspectiva os estudos da paisagem s?o considerados como um importante recurso para as quest?es ambientais, uma vez que revelam a forma como o espa?o geogr?fico se encontra em fun??o de sua utiliza??o. Neste contexto, as informa??es derivadas dos sensores orbitais, aliadas ?s t?cnicas de geoprocessamento, an?lises isot?picas do solo e avalia??es dendrocronol?gicas podem auxiliar na caracteriza??o de elementos da paisagem no presente e no passado. A partir do exposto, a Esta??o Ecol?gica de Pirapitinga (EEP) possui perfil potencial para estudos das modifica??es na paisagem ocasionadas por a??es antr?picas. Localizada no reservat?rio de Tr?s Marias (MG), esta Unidade de conserva??o foi inundada, ganhando aspecto de ilha fluvial h? cerca de 55 anos e recebendo ainda prote??o contra inc?ndios. A partir desta ?poca suspeita-se que ocorreram mudan?as significativas da paisagem, como surgimento de novas fitofisionomias e decrescimento de outras. Desta forma, esta pesquisa foi baseada na hip?tese que ap?s o enchimento da barragem de Tr?s Marias ocorreram mudan?as significativas na vegeta??o da EEP. Portanto, este estudo teve como objetivo geral classificar as classes de cobertura do solo e avaliar a din?mica espa?o-temporal das mesmas na EEP com o emprego do sensoriamento remoto, marcadores isot?picos do solo e an?lises dendrocronol?gicas de Copaifera langsdorffii. Todas as tr?s ferramentas utilizadas neste estudo corroboraram com a hip?tese de evolu??o da vegeta??o ao longo do tempo. A an?lise da paisagem atual e temporal pelo sensoriamento remoto mostrou a expans?o e retra??o das fitofisionomias presentes na EEP. As an?lises isot?picas do solo revelaram que todas as fitofisionomias atuais possu?am um padr?o fitofision?mico semelhante no passado. As an?lises dendrocronol?gicas de C. langsdorffii revelaram que indiv?duos desta esp?cie j? estavam presentes antes do enchimento da barragem e que provavelmente a consolida??o da fitofisionomia Mata Seca Sempre-Verde foi a partir da d?cada de 70.