A forest that has not been touched by human influence is referred to as primary forest or primeval forest , thus an ecological climax society . The classification as “untouched” depends on the duration of a largely natural development. There are traces of human cultivation as terra preta on presumably ten percent of the soils of Amazonia , which are nevertheless regarded as locations of primeval forest.
A secondary forest or, after massive interventions, initially a secondary vegetation with varying degrees of species composition, develops after human interventions such as road construction , logging , slash and burn , floor cultivation .
Forests around the world have undergone major changes in terms of their use and characteristics. Depending on the type of use and intensity are formed within a forest system replacement companies from which are derived from the naturally cyclic succession of a jungle often differ considerably.
- ↑ The black earth of the Indians ( Memento from November 18, 2007 in the Internet Archive )