RARITY PHYTOCENODIVERSITY OF UKRAINE IN CONTEXT OF A NEW EDITION OF "THE GREEN BOOK OF UKRAINE"

Abstract

The authors note that actual phytosozological task of current time continues to be the improvement of the sci-entific basis and development of new forms of protection of the rare phytocoenotic fund. It is indi-cated that the rarity of plant communities in Ukraine is conditioned by several reasons both natural (phyto-historical, geographical, cenotic, ecological) and anthropogenic character. Conservation of rarity phytocoenotic fund of Ukraine is a key element of the concept of ecosystem nature protec-tion, which is the purpose of "The Green Books." Authors disclose the origin of its name in the so-ciety as well the context of sinphytosozological protection. A critical review of the principles and criteria for the selection of rare syntaxons, lists of rare syntaxons of the first edition, the establish-ment of the results of rarity phytocenotic diversity according to the modern research, its natural and anthropogenic transformation needs for the preparation of a new edition of the official "Green Book of Ukraine" (UGB). It is necessary to set the directions of changes and major threats to the functioning of rare communities, as well as the current state of conservation of the rarity phyto-coenotic fund. The definite experience is gained in management of UGB for its function, which indicates the need to make certain changes to the document. First of all it is concern of questions of the regulatory and legal base in the field of the rarity phytocenotic diversity conservation, im-provement of a structure of UGB, review of the composition of rarity syntaxons and references to UGB. The authors consider these problems and give suggestions for improvement of regulatory documents on the syntaxonomic protection, structure and content of UGB in the paper.