Die Interpretation des Eindringwiderstands zur flächenhaften Darstellung physikalischer Unterschiede in Böden

The interpretation of penetration resistance in use of spatial discrimination of physical differences in soils Penetration resistance (PR) was measured for two natural Loess-Parabraunerden (Udalfs) and a reclaimed Loess-Parabraunerde. Concerning these measurements two methods of interpretation of PR are compared: 1. sums and means of PR for each point for all depths. 2. typified PR-depth-functions for each point. They are deduced from the differences of PR for each depth increment. Means and PR-depth-functions are rarely comparable in their spatial distribution: The same means are correlated with different PR-depth-functions and vice versa. The correlation is higher on the reclaimed area. The different contents and the lag of spatial correlation are interpreted as the need for doing both: calculating means as well as PR-depth-functions. Both methods complement each other. To discriminate spatially between top soil compactions, plowpans, high densities in the underground, flat sola above rocks PR-depth-functions are suggested as a method of interpretation.