In the early days lumber companies cut large areas of timber without thinking of the damage to the land. All the trees in an area were cut and a large amount of the wood was lost because it was not the right size or type of wood.
In the 1920s and 1930s people began to understand that by cutting only mature trees, the forests could be saved for the future, and the timber companies could continue to make money. The lumber companies of today manage the forests very carefully. Some of the most beautiful and most successfully managed forests in Idaho are those run by the timber companies.
The Forest Service has the job of making sure the national forests are put to the best use for all Americans, present and future. The Forest Service sells trees to lumber companies as they are needed, and makes sure the companies use good forest management. One kind of good management is called selective cutting. Only the large trees, or dead trees are cut. The loggers try to work carefully so they won't damage very many of the younger trees. Young trees are then planted to take the place of those cut. Planting young trees in the forest is called reforestation.
When the young trees grow large, the Forest Service will allow them to be cut, and more young ones will be planted to take their place. In this way, trees are harvested like a crop instead of being mined from the ground. This keeps the forests growing forever, and America will have both trees and lumber for as long as the forests keep growing.Additional changes are being made in terms of road construction, trail building and the like. Such activities have slowed considerably and are conducted in a much more ecologically sound manner today than in the past.