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| Siqueira Junior,Paulo; Silva,Marx Leandro Naves; Cândido,Bernardo Moreira; Avalos,Fabio Arnaldo Pomar; Batista,Pedro Velloso Gomes; Curi,Nilton; Lima,Wellington de; Quinton,John Norman. |
| ABSTRACT The use of Unmanned Aerial Vehicles (UAVs) and Structure from Motion (SfM) techniques can contribute to increase the accessibility, accuracy, and resolution of Digital Elevation Models (DEMs) used for soil erosion monitoring. This study aimed to evaluate the use of four DEMs obtained over a year to monitor erosion processes in an erosion-degraded area, with occurrence of rill and gully erosions, and its correlation with accumulated rainfall during the studied period. The DEMs of Geomorphic Change Detection (GCD) of horizontal and vertical resolutions of 0.10 and 0.06 m were obtained. It was possible to detect events of erosion and deposition volumes of the order of 2 m3, with a volumetric error of ∼50 %, in rills and gullies in the initial stage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gully; UAV; Digital elevation model; Structure-from-motion. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100525 |
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| Lima,Pedro Luiz Terra; Silva,Marx Leandro Naves; Quinton,John Norman; Batista,Pedro Velloso Gomes; Cândido,Bernardo Moreira; Curi,Nilton. |
| ABSTRACT Several soil conservation practices are used to reduce water erosion and ensure sustainable agriculture. An effective crop management practice is intercropping, in which two or more crops with different architectures and vegetative cycles are grown simultaneously in the same area. We hypothesized that intercropping of corn and jack-bean increases soil cover and reduce soil erosion by water in comparison to monocropping. The objective of this study was to evaluate the effects of different crop systems on soil cover and on soil erosion by water. Soil and water losses from a Typic Hapludox were measured under the following systems: corn cultivation (CO), jack-bean cultivation (JB), intercropping of corn and jack-bean (IC), and bare soil (BS), as a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intercropping; Soil conservation; Zea mays; Canavalia ensiformis; Linear mixed models. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100511 |
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