In the paper ontological basis of the system of the relationship between human beings and the nature. The concepts of environmental reality, of «homo environmental» as of its subject, and of environmental consciousness are discussed. It is shown that in classical concepts a human being is treated as a subject which determines environmental reality with his activity and, at the same time, as an object of influence of environmental reality, which gives the reason to speak about «homo environmental» and about the feedback between the «homo environmental» and the environmental reality.