Ministry of Environment and Forests

How would we judge ecological sensitivity? Scientists view an ecologically sensitive area as an area whose ecological balance, once disturbed, is very hard to restore. Thus, steep Western slopes of Western Ghats, subject to heavy rains and winds, if deforested, are likely to be quickly stripped of soil cover and for ever lose their pristine vegetation. We do have a scientific understanding of the environmental attributes that render areas more sensitive; we also have insights into processes that have resulted in irreversible ecological damage.

This site by the Ministry of Environment and Forests provides the list of legislations on environment, forests, and wildlife