Two different timber-harvest methods are being tested on adjacent forest plots with clay loam surface soils. Initially, the bulk density of the surface soil in both plots was 1.1 Mg/m3 . One year...

Two different timber-harvest methods are being tested on adjacent forest plots with clay loam surface soils. Initially, the bulk density of the surface soil in both plots was 1.1 Mg/m3 . One year after the harvest operations, plot A soil had a bulk density of 1.48 Mg/m3 , while that in plot B was 1.29 Mg/m3  Interpret these values with regard to the relative merits of systems A and B, and the likely effects on the soil’s function in the forest ecosystem.