Índice de erosividade para os municípios de Francisco Beltrão e Pato Branco - PR

Abstract

Erosion is a natural process, responsible for the loss of the soil surface layer and consequent degradation of the soil. This erosion can be accelerated by the anthropogenic action that causes environmental problems. The importance of knowing the erosive potential of rainfall over a period of time contributes to soil management and conservation practices. This, consequently, could reduce soil losses and increase soil fertility resulting in increased agricultural production. The rainfall erosivity index in the State of Paraná, in the municipality of Francisco Beltrão, was studied with a rainfall series of data from 1974 to 2015 and for the municipality of Pato Branco during the period 1998 to 2016. The value of total erosivity in Francisco Beltrão and in Pato Branco were 11674.6 and 11002.4 MJ mm ha-1 h-1 year-1 respectively. The time that presented the most erosive potential was in the seasons of spring and summer, emphasizing the month of October that contributed to the greater erosivity, being necessary extreme.