gilgais: Line Transect of Soil in Gilgai Territory
Description
This dataset was collected on a line transect survey in gilgai
territory in New South Wales, Australia. Gilgais are natural gentle
depressions in otherwise flat land, and sometimes seem to be regularly
distributed. The data collection was stimulated by the question: are
these patterns reflected in soil properties? At each of 365 sampling
locations on a linear grid of 4 meters spacing, samples were taken at
depths 0-10 cm, 30-40 cm and 80-90 cm below the surface. pH, electrical
conductivity and chloride content were measured on a 1:5 soil:water
extract from each sample.
Usage
gilgais
Arguments
source
Webster, R. (1977) Spectral analysis of gilgai soil.
Australian Journal of Soil Research15, 191--204.
Laslett, G. M. (1989)
Kriging and splines: An empirical comparison of their
predictive performance in some applications (with discussion).
Journal of the American Statistical Association89, 319--409
References
Venables, W. N. and Ripley, B. D. (2002)
Modern Applied Statistics with S. Fourth edition. Springer.