EN
Two aspects of nature conservation are discussed; the first is related to the character of our knowledge of the nature. A point is made that this knowledge is mainly concerned with this characteristic of the nature, which is its structure. Results of the analysis of the structure indicate that this is a function of the development and depends to a large extent on energy. The other aspect refers to interrelations between the nature and man. Thus for correct activities in the field of nature conservation the knowledge of the role energy plays in the nature development is indispensable. This is because conservation of the nature structure alone is a partial approach. Equally important is the recognition of the interrelations involving man and the nature (the man-nature interrelations).