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Estabilidade temporal do padrão espacial de armazenamento de água no solo em diferentes escalas espaciais

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Resumo:This study aimed to evaluate the spatial variability and temporal stability of water storage in the soil with the presence and absence of culture in different experimental scales. Two data sets were used. The first set of data was obtained in three areas in the experimental area of the Irrigation Technical Center in experimental campus of the State University of Maringá (UEM), called EM, EI and EME. The EM was conducted in the field, a total area of 6 x 24 m, with the culture of Urochloa decumbens. EI corresponded to an area with dimensions of 2 x 3 m field, located beside the area related to the EM, with a clump of Urochloa decumbens on its surface so as to occupy a part of the experimental area. The work related to the EME was conducted in a drainage lysimeter. In three experiments was conducted monitoring of soil moisture by TDR, considering the soil layer 0-0.20 m. The second data set was obtained from humidity values and water storage in the soil, obtained in the experimental area of the Irrigation Technical Center in experimental campus of the State University of Maringá (UEM) over several years and in various locations and GONCALVES et al. (1999). Were prepared semivariograms staggered semivariograms staggered crossed and staggered relativized semivariograms and surface values. The results showed that the spatial pattern of water storage in the soil is not affected by the presence of the culture, or by irrigation and there is a temporal persistence of the spatial pattern of it, and not dependent on the work scale, and in tens of eters, meters or centimeters. The spatial structure of the water storage in soil exists and worked independent of scale, with fractal geometry, which can be quantified by fractal dimension.
Autores principais:Hara, Anderson Takashi
Assunto:Armazenamento de água no solo Dimensão fractal Geoestatística Semivariograma cruzado ecalonado Ciências Agrárias Agronomia
Ano:2018
País:Brasil
Tipo de documento:tese de doutoramento
Tipo de acesso:acesso aberto
Instituição associada:IBICT
Idioma:português
Origem:Oasisbr

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