Use of Geostatistics in the Description of Salt-Affected Lands
Geostatistical methods are increasingly popular tools in the anaylysis of a variety of agricultural problems. The methods are typically used to determine various spatially related quantities which, in turn, characterize the variability of one or more parameters in space and/or time. Simple, ordinary and universal kriging methods produce linear estimators which are useful for obtaining estimates of a spatially distributed property over a region, especially at locations for which no data are available. For the most part, the final result of an analysis is a map showing the spatial distribution of the property of interest. Many examples appear in the literature (Burgess and Webster 1980a, b; Webster and Burgess 1980; Vieira et al. 1981; Vauclin et al. 1983; Warrick et al. 1986; Yates et al.1986a; Yates and Warrick 1987; ASCE 1990a, b). At other times, descriptors such as variograms and correlation scales are the ultimate goal of a geostatistical investigation.
KeywordsElectrical Conductivity Mean Square Error Conditional Probability Ordinary Kriging Kriging Variance
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