Temas Ambientais Analisados em Fotografi as Aéreas. Caso Inicial de Estudo: Irati, Paraná Environmental Themes Analyzed In Aerial Photographs. Initial Case Study: Irati, Paraná

O presente trabalho visa a identifi car, listar, selecionar e analisar no elenco das fotografi as aereas disponiveis, que recobrem a area urbana de Irati e arredores, as que reportam temas ambientais que proporcionam alteracoes visiveis na paisagem causadas pela atividade humana. Foram selecionadas sete fotografias aereas em escala 1:8.000 do aerolevantamento de 1997 e as seis correspondentes do aerolevantamento de 1980 em escala 1:25.000. Os cinco temas ambientais considerados foram: lavras e saibreiras, olarias, local de extracao de terra, locais de disposicao inadequada de residuos solidos urbanos e expansao do tecido urbano. As areas ambientais defi nidas se apresentaram bem caracterizadas nas fotografi as aereas e sao relevantes economicamente ao municipio. A analise temporal (duas datas) permitiu a obtencao de informacoes sobre as condicoes dos locais selecionados e as principais alteracoes ocorridas no intervalo de dezessete anos considerado. O material resultante da pesquisa sera utilizado nas futuras aulas da disciplina de Fotogrametria e Fotointerpretacao do curso de Engenharia Ambiental. Abstract This present work aims at identifying, listing, selecting and analyzing in the group of available aerial photographs, which cover the urban area of Irati and surroundings, the ones that refer to environmental themes that provide visible alterations to the landscape caused by human activity. Seven aerial photographs in 1:8.000 scales of the aerial survey made in 1997 and its six corresponding aerial surveys made in 1980 in 1:8.000 scales were selected. The fi ve following environmental themes were considered: ploughing and gravel pits, brickyards, place of land extraction, places of inadequate disposal of urban solid waste and expansion of the urban area. The defi ned environmental areas were well characterized in the aerial photographs and they are economically relevant to the region. The temporal analysis (two dates) allowed to obtain information about the conditions of the selected places and the main alterations occurred in the interval of the 17 considered years. The resultant material of the research will be used in classes of the discipline of Photogrammetry and Photointerpretation in the Environmental Engineering Course.