A zone or an area that serves not for any anthropogenic use but as a conserved natural habitat where plants and animals can thrive.
The ecological buffer zones are necessary to minimize the impacts of an adjacent land use. They protect the natural environment and help keep nearby ecological niches stable and functioning.
An example of ecological buffer zone is a riparian buffer near to a very busy roadway. Not only does it reduce traffic noise, air and water pollution, it also provides a space for organisms to flourish in the area.