My research focus is in using quantitative methods to precisely understand how soils function and change— spatially, and through time. Such methods are far from developed but I believe some combination of mechanistic and statistical modelling is required to do this. I research methods for comprehensive digital soil mapping aiming to characterize soil both in the lateral and vertical dimensions. Additionally I contribute methodology for quantifying (and validating) measures of uncertainty for these comprehensive soil information systems.
Outputs of this sort of work are intended for feeding into environmental modeling and monitoring programs, where precise land management decision making is required at all manner of spatial scales. Furthermore, I investigate innovative systems for soil measurement, which includes that associated with remote and proximal and soil sensing. I have particular interest in infrared and x-ray spectroscopy. The importance of all these research interests have been recognized by successful funding grants from both the Australian Research Council and Australian Government Department of Agriculture.