THE GEOMORPHOLOGIC CARTOGRAPHY AS A SUBSIDY TO ANALYSE THE LAND USE INTERFERENCES IN ACTIVATING EROSION PROCESSSES: A STUDY IN A SUGARCANE AREA.

• Autor(a) principal: SILVEIRA, Alan
• Data de Publicação: 2011
• Outros Autores: CUNHA, Cenira Maria Lupinacci da
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ra'e Ga (Online)
• Texto Completo: https://revistas.ufpr.br/raega/article/view/16739
• topic: dinâmica geomorfológica; uso da terra; processo erosivo; monocultura canavieira

This study aimed at analyzing the geomorphologic dynamics and its relationship to human interference and ownership of relief, towards a systemic approach, through the interpretation, in an integrated manner, of cartographic documents made from techniques of geomorphologic cartography and of land use. By stereoscopic pairs of aerial photographs, it was prepared the Geomorphological Map and the Land Use Map, respectively based on Tricart's (1965) and Ceron and Diniz's (1966) technical procedures. The unit of the research analysis refers to the basin of Tijuco Preto Streamlet (SP) which is located at the Geomorphological Province of São Paulo state Peripheral Depression between latitudes 22º42'17'' and 22º51'36''S, and longitudes 47º30'30''and 47º37'03''. In general, it was possible to notice that this basin has been experiencing linear erosion processes, where it was mapped many erosion furrows, grooving and creeping, besides several slope breaks.  These processes are associated with a conjunction of circumstances, and the anthropic one is mostly represented by sugarcane monoculture and by urbanization, which are crucial agents in activating erosion processes and in direct interfering on the dynamics of river and rain flow at the basin of Tijuco Preto Streamlet.