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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10176

Title: Spatial Variability of some Soil Physical Properties. I. Autocorrelation, Variogram, Cross-Correlation and Cross-Variogram..
Authors: A. M. Al-Omran
W. A. Al-Mustafa
M. M. Mursi
Issue Date: 1996
Publisher: J. King Saud Univ. Agric. Sci.
Abstract: A filed experiment was designed to investigate the spatial variability of some soil physical properties of calcareous soils at the Agricultural Research and Experimental Station, King Saud University at Deirab. Geostatistical techniiques were introduced to estimate the spatial ariability. One transect was sampled from south to north every 5 m for 500 m long. Measurements were made for infiltration rate, bulk density, texture and CaCO3 %. Autocorrelation, cross-correlation, variogram, and cross-variogram were calculated for the data. The rsults indicated that there was significant spatial correlation for all parameters meausred and analyzed, and the geostatistical techniques were useful to estimate athe correlation length for those parameters. For the infiltration rate athe correlation length was 30 m, while the range for a the infiltration rate using variogram was 30 m. The same calculation was done for bulk densityu, sand% and CaCO3%. The results suggested that for future research in that field one should consider the spatial differences along the field for different properties of the soils, and distance between each observation should not exceed 50 m along the transect.
URI: http://hdl.handle.net/123456789/10176
Appears in Collections:College of Foods And Agricultural Science

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