Transport of sediments, carbon and nutrients in areas of reforestation and grassland based on simulated rainfall

Abstract

The objective of this study was to evaluate the soil losses, as well as carbon and chemical samples in runoff through areas of pine (Pinus taeda), eucalyptus (Eucalyptus dunni) and a consortium of pasture with oat (Avena stringosa) and ryegrass (Lolium multiflorium) in the Fragosos river basin, in Concordia, SC. For this, rainfall simulations with mean intensities of 94 mm h-1 were conducted in September and November 2011, in plots of 1 m2 established in the three areas. Runoff, loads carried of the sediment, and carbon and chemical concentrations were quantified in the experiment. The results showed that the concentrations of sediment and organic carbon were higher in the eucalyptus area. The largest concentrations of chemicals for all areas were nitrate, calcium, magnesium and potassium. Total carbon, organic carbon, sediment and nitrate were transported in higher loads in the eucalyptus area. With the exception of nitrate and chloride, the chemical loads carried were higher in the pasture area

Automated System for the Process of Artificial Rain Generation

“…Several studies were performed using systems that generate artificial rains, mainly in the areas of water erosion (BAGATINI et al, 2011;GARBIATE et al, 2011;NUNES and CASSOL, 2011;PORTELA et al, 2011;VOLK and COGO, 2014), surface runoff (SPORH et al, 2009;BRAMORSKI et al, 2012;CARVALHO et al, 2012;SILVA et al, 2012;PINHEIRO et al, 2013;OLIVEIRA et al, 2013;ABRANTES;LIMA;MONTENEGRO, 2015 andRODRIGUES et al, 2015) and the persistence of phytosanitary products (BASTIANI et al, 2000;NEVES;FOLONI;PITELLI, 2002;CAMPOS et al, 2010;PEREIRA et al, 2010;PEDRINHO JUNIOR et al 2012a andPEDRINHO JUNIOR et al 2012b).…”