Key Conservation, Rare Plant Diversity and Priority Conservation in Qiandongnan Prefecture, Guizhou Province

: Objective: To determine the priority list of key protected, rare and endangered plants in Southeastern Guizhou in order to comprehensively grasp the status quo of key protected and rare plants in southeastern Guizhou. Methods: by adopting key lines and quadrat survey method of combining the field investigation, the use of endangered coefficient, coefficient of genetic value coefficient, habitat type, protection grade coefficient and value coefficient calculated species priority protection value, focus on the protection of qiandongnan prefecture, rare and endangered plant level and priority protection level. Results: There were 33 families, 56 genera and 98 species of national key protected plants and rare and endangered plants in Southeast Guizhou province. Among them, 73 species belonging to 42 genera and 24 families are under state protection, 17 species belonging to 14 genera and 10 families are under key protection in Guizhou Province, 1 species belonging to 1 family, 1 genus and 1 endangered species belong to "Chinese Plant Red Data Book", and 7