中国东北濒危植物优先保护的定量评价

采用受威胁系数、遗传价值系数、利用价值系数、保护现状系数和名录现状系数构成的优先保护评价指标体系对中国东北濒危植物进行定量分析和综合评价,得到濒危植物优先保护值并确定其优先保护等级。结果表明,东北地区共有濒危植物60种,隶属于25科42属,优先保护值范围在0.853 8 0.318 4之间。依据优先保护值将濒危植物划分3级,一级保护有17种,隶属于11科15属,二级保护有18种,隶属于11科14属,三级保护有25种,隶属于13科17属。

Quantitative Evaluation of Conservation Priority of the Endangered Plants in Northeast China

By adopting the evaluation index system of conservation priority which included threatened coefficient, genetic coefficient, utilization coefficient, protection status coefficient and list status coefficient, the endangered plants in Northeast China were quantitatively analyzed and synthetically evaluated, and the value of conservation priority and conservation priority grades of the endangered plants were determined. The results showed that there were 60 species of endangered plants belonging to 42 genera and 25 families in Northeast China, the value of conservation priority ranged from 0.853 8-0.318 4. The endangered plants were divided into 3 grades according to their values of conservation priority, 17 species belonging to 15 genera and 11 families were in the first grade protection, 18 species belonging to 14 genera and 11 families were in the second grade protection, 25 species belonging to 17 genera and 13 families were in the third grade protection. The quantitatively evaluation index system of conservation priority in this paper represented the degree of conservation priority of the endangered plants comprehensively, objectively and accurately.