Soil genesis with emphasis on the effects of topography and hydrology
Quantitative method of soil-landscape modeling
Soil hydrology, genesis of soil hydromorphic features, and wetland ecology
Understanding and managing spatial variability of soil properties and processes for precision agriculture, soil conservation, and water quality issues.
Digital terrain analysis.
Soil resource inventory; soil and landscape database design and data delivery
Applications of geographic information science for pedology and land assessment.