Estimativas de Perda de Solo por Erosão Hídrica para o Município de Serra Talhada, PE
Journal of Environmental Analysis and Progress
Estimativas de Perda de Solo por Erosão Hídrica para o Município de Serra Talhada, PE
Autor Correspondente: T. G. F. da Silva | [email protected]
Palavras-chave: Rainfall, erodibility, Planosol, Acrisol
Resumos Cadastrados
Resumo Inglês:
Changes in ecosystems in degraded environments increase annually due to the need for food production. A quantification of soil losses due to water erosion in agricultural areas is fundamental. In this sense, the objective was to estimate soil losses by water erosion in different periods of rainfall series in two types of soil in the municipality of Serra Talhada, State of Pernambuco. The study was made considering the data of two areas, one with a Haplic Planosol and the other with a Red-Yellow Acrisol. The areas were composed by an experimental plot of 100 m ramp length, with slope of 5% for Planosol and 3% for Acrisol. Soil loss was estimated through the USLE in the period from 1996 to 2015, and is subdivided into four periods: Period I (1996-2015), Period II (2001-2015), Period III (2006-2015) and Period IV (2011 -2015). The values considered for soil management (C) and soil support practices (P) were 0.080 and 0.5, respectively. Rainfall for the series evaluated (1996 to 2015) presented an average of 600.62 mm. The erosion indexes (EIm) of Haplic Planosol and Acrisol were considered weak. The rainfall (R) erosivity factor was 420.89 MJ.mm.ha-1.h-1.year-1, resulting in a soil loss of 5.04 and 2.75 Mg.ha-1.year-1, in the Period II. Thus, it was concluded that Haplic Planosol is more susceptible to soil loss than the Red-Yellow Acrisol under the climatology of the municipality of Serra Talhada.
