For the forest plot B in question 4, what was the change in percent pore space of the surface soi caused by timber harvest? Would you expect that most of this change was in the micropores or in the macropores? Explain.

Data from 4

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.