Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8911082 | International Journal of Sediment Research | 2017 | 9 Pages |
Abstract
This paper quantifies the runoff and sediment yield for four different land covers in a semiarid region of Brazil. The WESP model, a distributed, event-oriented runoff-erosion model, was applied and its physical parameters, Ns and KR, were adjusted based on observed runoff and sediment yield data using simulated rainfall with an average intensity of 53 mm h-1. The sediment yield obtained was 53.02Â kg ha-1 (caatinga vegetation), 231.96Â kg ha-1 (bare soil), 309.75Â kg ha-1 (beans), and 847.38Â kg ha-1(corn). The results showed that caatinga cover yields the lowest erosion and runoff when compared to the other treatments. The results also show that the sediment yield and runoff values simulated with Ns, KI, and KR parameters were well calibrated, within acceptable deviations. The caatinga vegetation was more effective in protecting the soil, when compared to the other types of coverage. The beans and corn covers had the highest values of runoff and sediment yield, even higher than those observed for bare soil.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Richarde Marques da Silva, Celso Augusto Guimarães Santos, José Yure Gomes dos Santos,