Comparative analysis of rare and endangered plants of Hirkan dendroflora

In the research work has been comparatively analyzed the Hirkan dendroflora and have been collected herbariums of rare and endangered trees and shrubs. There are identified 26 families, 40 genera, 60 species of rare and endangered trees and shrubs naturally spreading areas, distribution of individuals in populations, have been performed tree-ring analysis on old samples. As a result of the observations have been determined, that in the Hirkan flora the majority of species in the areas have been diminished and decreased compared to previous years, many species are in danger of being disappeared. From this point of view by the monitorings of the area were studied threat criteria, the reasons of decline in plant varieties, those plants have been identified based on version of IUCN 3.1. In the research work have been processed out the protection measures, the biological features of species, the causes of change in natural resources.