Figure 7.6 Deforestation in the United States (1620–present)
Methods Used to Manage and Harvest Trees
Figure 7.7 Even-aged and uneven-aged management
■ CLEAR-CUTTING—all of the trees in an area are cut at the same time. This
technique is sometimes used to cultivate shade-intolerant tree species.
Environmental impacts of clear-cutting include:
- Microclimates within the forest are changed, affecting the associated
food webs - Water runoff, which produces soil erosion, increases
- A decrease in biodiversity caused by the loss of habitats
- A temporary increase in the amount of available wood followed by very