Antropismo na chapada do Araripe: estudo de caso na comunidade Catolà em Nova Olinda-ce

• Autor(a) principal: FlÃvio Batista da Silva
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFC
• Texto Completo: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10116
• topic: NDVI, Cobertura vegetal, Biomassa vegetal.; AGRONOMIA

The Chapada do Araripe is inserted in one important environment at south of state of CearÃ, making edge with the states of Pernambuco and PiauÃ, acting as reload aquifer area that provides water to cariri cearense. ItÂs be inserted in one conservation unit, the Floresta Nacional do Araripe, more known as FLONA Araripe. ItÂs has a vegetation with characteristics well diversified, like Humid Forest, CerradÃo and Carrasco. At the local communities near of Flona, the main activities developed are rainfed agriculture and extrativism. The tradicional crops are cassava, bean and corn, which all cause strong impacts at natural vegetation. The necessity of constant monitoring and the scarcity of employees make troubles to implement conservation politics. By the way, the remote sensing is one of technologies which allows monitoring the vegetation dynamics at space and temporal scale. We aim to evaluate the dynamic of vegetation of the APA-Araripe through satellites images and the socio and environments of Comunidade Catolà at municipal district of Nova Olinda, state of CearÃ. The images utilized are plotted by satellite Landsat 5 TM, corresponding to orbit/point 217/65, provided by Instituto Nacional de Pesquisas Espaciais (INPE), with Geo Tif format. We used images from 1987 to 2011, which years selected were 1987, 1992, 1997, 2001, 2007 and 2011. Using the Erdas Imagine 9.0 software, we analyzed the Normal Difference Vegetation IndexÂs (NDVI) and Foliar Area IndexÂs (IAF). We applied questionnaires to get socio and environments data from the Comunidade CatolÃ. At this community, the fatherÂs schooling level is less than their childrens. The cassava crop is the main agriculture activitie, but the main source of income is provided by the government. At the forest monitoring, the NDVI showed more sensible to local rainfall seasonality and the IAF was less reliable during dry periods and the natural characteristics of the bioma influenced the vegetation indices used. The use of satellites images showed one efficient tool to monitoring antropogenic activites at the forest.