Avaliação das áreas susceptíveis à erosão na cultura da cana-de-açúcar em uma bacia hidrográfica.

Abstract

The sugar cane production in Brazil is one of largest in the world. However the environmental impacts provoked by this production are huge. One of the largest problems is the soil loss by the erosion that vary in agreement with the type and the depth of soils. The empiric equations like Usle are important for planning the agricultural lands use. The objective of this work was to evaluate the erosion susceptible areas at the sugar cane production watershed. The work was developed in Ribeirão of Marins – Monjolinho watershed, Piracicaba district, SP. All the charts were generated in a 30 x 30 m resolution , with a mesh of 181 columns and 241 row in the IDRISI 3.2. The critical areas represented 11,4% and this result is related with the soil type, the manegement and the declivity. The sugar cane culture represented 96% of critics classified areas. The observation of soil support capacity is fundamental for agricultural planning.