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| Mendonça,Patrícia Gabarra; Teixeira,Daniel De Bortoli; Moitinho,Mara Regina; Silva Junior,João Fernandes da; Oliveira,Ismênia Ribeiro de; Martins Filho,Marcílio Vieira; Marques Junior,José; Pereira,Gener Tadeu. |
| ABSTRACT The identification of erosion-susceptible areas is fundamental for the adoption of soil conservation practices. Thus, the best way to estimate the spatial pattern of soil erosion must be identified, in which the process uncertainties are also taken into consideration. The purpose of this study was to evaluate the spatial and temporal uncertainty of soil loss under two scenarios of sugarcane harvest management: green cane (GC) and burnt cane (BC). The study was carried out on a 200-ha area, in Tabapuã, São Paulo State, Brazil. A regular 626-point sampling grid was established in the area, with equidistant intervals of 50 m and a final plant density of about 3.3 samples per ha. The probability that the soil loss would exceed the tolerable limit of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Green cane; Burnt cane; Geostatistics; Indicator kriging. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100512 |
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| Mendonça,Patrícia Gabarra; Silva Júnior,João Fernandes da; Oliveira,Ismênia Ribeiro de; Teixeira,Daniel De Bortoli; Moitinho,Mara Regina; Martins Filho,Marcílio Vieira; Marques Júnior,José; Pereira,Gener Tadeu. |
| The assessment of spatial uncertainty in the prediction of nutrient losses by erosion associated with landscape models is an important tool for soil conservation planning. The purpose of this study was to evaluate the spatial and local uncertainty in predicting depletion rates of soil nutrients (P, K, Ca, and Mg) by soil erosion from green and burnt sugarcane harvesting scenarios, using sequential Gaussian simulation (SGS). A regular grid with equidistant intervals of 50 m (626 points) was established in the 200-ha study area, in Tabapuã, São Paulo, Brazil. The rate of soil depletion (SD) was calculated from the relation between the nutrient concentration in the sediments and the chemical properties in the original soil for all grid points. The data were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Green cane harvesting; Burnt cane harvesting; Geostatistics; Landforms; Sequential Gaussian simulation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401181 |
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