Deforestation, clearance or clearing is the removal of a forest or stand of trees where the land is thereafter converted to a non-forest use. Examples of deforestation include conversion of forestland to farms, ranches, or urban use. About half of the world's original forests had been destroyed by 2011, the majority during the previous 50 years. Since 1990 half of the world's rain forests have been destroyed. More than half of the animal and plant species in the world live in tropical forests. The term deforestation is often misused to describe any activity where all trees in an area are removed. However in temperate climates, the removal of all trees in an areain conformance with sustainable forestry practicesis correctly described as regeneration harvest. In temperate msic climates, natural regeneration of forest stands often will not occur in the absence of disturbance, whether natural or anthropogenic.