Variabilidade espacial de perdas de solo, do potencial natural e risco de erosão em áreas intensamente cultivadas
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
01/04/2006
|
Resumo |
The objective of this work was to identify the spatial variability of the natural erosion potential, soil loss and erosion risk in two intensely cultivated areas, in order to assess the erosion occurrence patterns. The soil of the area located at Monte Alto, São Paulo state, was classified as Paleudalf (PVA) with moderately slope, with different managements. The soil of the area located at Jaboticabal, São Paulo state, was classified as Haplortox(LV) with gentle slope and cultivated with sugarcane. A irregular grid was imposed on the experimental areas. Soil samples were obtained from 0-0.2 m depth at each grid point: 88 samples in Monte Alto area (1465 ha) and 128 samples at Jaboticabal area (2597 ha). In order to obtain the values of the studied variables USLE was applied at each grid point. Descriptive statistics were calculated, and geoestatistical analyses were performed for defining semivariograms. Kriging techniques to develop map showing spatial patterns in variability of selected soil attributes were used. All variables showed spatial dependence. The PVA soil showed higher erosion risk due to the slope and atual management compared to the soil LV. |
Formato |
315-322 |
Identificador |
http://dx.doi.org/10.1590/S1415-43662006000200010 Revista Brasileira de Engenharia Agricola e Ambiental, v. 10, n. 2, p. 315-322, 2006. 1415-4366 1807-1929 http://hdl.handle.net/11449/68820 10.1590/S1415-43662006000200010 S1415-43662006000200010 2-s2.0-33750360708 2-s2.0-33750360708.pdf |
Idioma(s) |
por |
Relação |
Revista Brasileira de Engenharia Agrícola e Ambiental |
Direitos |
openAccess |
Palavras-Chave | #Geoestatistics #Soil conservation #Soil map #USLE (Universal Soil Loss Equation) |
Tipo |
info:eu-repo/semantics/article |