restoration
Renaturation refers to the restoration of natural habitats from, for example, For example, agricultural ground areas, railroad tracks, closed airfields or straightened rivers. During the restoration of streams and rivers, attempts are being made to restore the original, uninfluenced riverbed, to reduce the flow velocity and thus the danger of flooding, and to resuscitate the original species of animals and plants. Examples in Germany: Schwalm, Isar, Emscher, Schlatbach, Sieg, Menach, Wuhle, Weschnitz or Lower Havel. The most time-consuming renaturation projects include moorrenaturation. A special form of renaturation in cities is the disclosure of underground canalized waters to enhance the quality of life. Reclamation, on the other hand, refers to the soil which has become sterile by mining or opencast mining. In Switzerland, the renaturation of rivers and streams is also called revitalization.