Forestry

Forestry

Case studies showing how important soil is in different types of forestry and timber production.

Forests depend on soil for anchorage, water and nutrients. The case studies in this theme compare the forest floor of temperate woodland, the immense biological activity of tropical rainforest soils and the cold, thin profiles beneath boreal conifers. Deforestation is also examined, showing what happens when tree cover — and the protective litter layer above the soil — is removed.

Tree roots, fungi and soil organisms work together in ways that can take decades to develop. Leaf litter and decaying wood build organic matter, while acidity, drainage and texture influence which species thrive. When forest is cleared, exposed soil is quickly at risk from erosion and nutrient loss.

Whether timber is harvested for construction, fuel or paper, sustainable forestry must account for the long-term health of the soil. These case studies explain why forest managers treat the ground beneath the trees as carefully as the trees themselves.