Navegando por Assunto "Mapeamento de Paisagens"

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Mapeamento das unidades de paisagem, da sensibilidade ambiental e da vulnerabilidade social na área do Porto de Itaqui-Bacanga, Ilha de São Luís, MA
(Universidade Federal do Pará, 2008-02-27) ANDRADE, Milena Marília Nogueira de; SOUZA FILHO, Pedro Walfir Martins e; http://lattes.cnpq.br/3282736820907252
Almost 30% of the Maranhão State population live in the coastal zone, which has several services and human activities, with emphasizes to harbor actions darried out in the Itaqui harbor. The main hazard related to this activitie is associated with oil spill, due to cleaning, saving and transportation processes. The aim of this work is map the environmental sensitivity index of de landscape units, as well as the social vulnerability of the residencial area under harbor influence. This will provide information about the priority areas to contingency and recovery. High resolution remote sensing, digital cartography and social-economic data were collected and analyzed from a Geografical Information System. At first, the social-economic data were analyzed from descriptive statistic and through correspondance analisys. After that, three variables were chosen (fisinhg relationship, schooling and incoming) to generate the Compose Vulnerability Index (CVI), used to produce the social vulnerability map. As result, 4 landscape domains and 21 landscape units were recognized, as well as, their Enviromental Sensitivity Índex (ESI): Coastal Plateau (Flat high land,, Active cliff line – ESI 3B, Inactive cliff line – ESI 8A, Abrasion platform – ESI 1C, Intermittent lakes); Coastal Plain (Estuarine channel, Mangroves – ESI 10D, Tidal sandflat and Sandy/muddy banks – ESI 7, Sheltered scarps in sedimentary rocks (paleocliffs) – ESI 8A, Tidal mudflat – ESI 9A, Vegetated tidal mudflat – ISA 9B); Coastline plain (Beach – ESI 3A, Scarps and steep slopes in sand -3B, Paleodunes); e Human System (Urban areas, , Military Area, Artificial Lakes and Atificial Strutures – ESI 1B). Through the Correspondance Analisys it was possible recognize the relatitionships between Fisnhig relationship vs. Neiborhood, and Scoolhing vs. Income variables. Meanwhile, the social-economic analysis when carried out in the GIS allowed the social vulnerability map construction. This map showed that the high vulnerability areas are the neiborhoods: Vila Nova (Ponta do Bonfim), Alto da Esperança (Tamancão) e Alto da Esperança (Residencial Ana Jansen); these ones are built in lower topografic places, which are subject to floods. Their occupation are more recent, and the people that lives there has direct relationship with fishing, low incoming and low schooling. In the other hand, the place classified as low vulnerability is represented by Anjo da Guarda Neiborhood that its located along the José Sarney Avenue, which is topographically higher, and its occupation is marked by people with high income, high scooling and lower relationhip with finshing. Therefore, it is possible to conclude that high social vulnerability areas are located in the boundary of the coastal plain, in contact with mangroves (ESI 10D), where the fishing activities area essential as social tradition and income generation.