Commercial forests are routinely harvested when the trees mature. Harvesting (as seen on the left of the forest block) exposes the soil to rainfall and erosion1. Replanting (as seen on the right) provides partial protection.
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- erosion: Wearing away of the land by mechanical action, such as by wind, water and glaciers, and by material carried in them. It can also be the gradual wearing away of a surface due to friction, particle collisions or chemical attack. Part of the process of erosion transports material away.
