Digital Mapping / Landscape Modeling
Evaluation of DEM grid resolution to build landscape models in low relief and rugged terrain
- Soil properties can be effectively predicted using DEMs irrespective of topography of the land.
- While landscape configuration is not significantly affected by DEM resolution in low relief areas, topography becomes very important when modeling in rugged terrain.
Soil Health / Quality in Urban Environments
- Soil Properties and their Relationships in Urban Landscapes
- Generally, soils rebound from disturbances associated with construction activities.
- There is buildup of organic matter in the yards with time and bulk density of the soils around the houses significantly decreased from older neighborhoods to the new ones.
- Heavy Metals Distribution urban landscapes
- There was a general decreasing trend in heavy metal concentrations from the Pre-1939 period until 1980–1993, after which there was a sharp increase in the concentrations of most of the metals.
- There appears to have been a source that caused an increase in Cd, Cr, Co, Cu, Pb, and Ni concentrations in soil adjacent to homes built between 1983 and1990 and this needs further investigation.
- The effects of farmer attitudes and farm management practices on soil quality
- Ownership, rent or own, is not directly an influencing factor in shaping soil quality.
- Fields of farmers with large acreages had lower organic matter, lower microbial respiration, and higher pH.
- The no-till systems adopted by farmers with large acreages resulted in soils with high bulk densities.
- Farmers who enjoyed farming had fields with lower bulk densities than those who farmed simply to make a living.
Some General Findings:
Some Findings from Ankeny, Iowa: