Rehabilitation is a process which is being applied more frequently to the environment.It aims to reverse the deterioration of a national resource, even if it cannot be restored to its original state.

Attempts to rehabilitate deteriorated areas have a long history. In England, for example, gardener and architect Lancelot "Capability" Brown devoted his life to restoring vast stretches of the English countryside that had been dramatically modified by human activities.

Reforestation was one of the common forms of rehabilitation used by Brown, and this method continues to be used throughout the world. The demand for wood both as a building material and a source of fuel has resulted in the devastation of forests on every continent. Sometimes the objective of reforestation is to ensure a new supply of lumber for human needs, and in other cases the motivation is to protect the environment by reducing land erosion...