100204 Variation of Soil Property Depth Functions.
Poster Number 344-303
See more from this Division: SSSA Division: Pedology
See more from this Session: Soil Pedology Poster
Tuesday, November 8, 2016
Phoenix Convention Center North, Exhibit Hall CDE
Abstract:
Soil property depth functions are used to identify soil processes, locate discontinuities, and calculate nutrient stocks. We investigated whether the location of a vertical transect in a soil profile wall affects depth function type. In three soil profile walls, we sampled ten transects within the horizontal distance of 1 m. We used soil property data from each vertical transect to estimate soil property depth function types. We found that depth function types can vary considerably within the horizontal distance of 1 m in soil profile walls. In a Mollisol profile wall, three depth function types (minima-maxima, peak, and uniform) were identified for silt content. In an Entisol soil profile wall, three depth function types (gradational, minima-maxima, and peak) were identified for pH. This implies that variation of depth function type can be large, which has implications for soil pit sampling and interpretation.
See more from this Division: SSSA Division: Pedology
See more from this Session: Soil Pedology Poster