陕南化龙山珍稀濒危植物的保护和利用

化龙山是大巴山系在川陕境内的最高山峰，海拔２９１７．２ｍ，植物资源丰富，有野生维管植物１９７７种，隶属１８６科８１５属。化龙山是陕西省珍稀濒危植物资源最丰富的地区，共有国家保护的珍稀濒危植物２２科３０属３３种，其中属一级保护１种，二级保护１１种，三级保护２１种，属濒危２种，稀有１４各，渐危１７种，珍稀濒危植物古老成分较多，并以第三纪孑遗成分为主单少型属和中国特有属分别是１６属和１０属。这些珍稀濒危

THE UTILIZATION AND CONSERVATION OF THE RARE AND ENDANGERED PLANT RESOURCES OF HUALONG MOUNTAIN RANGE

Hualong Mountain is the highest peak of Dabashan range in Sichuan and Shaanxi Province,with an altitude of 2 917.2 meters.The plant resources are rich in Hualong Mountain.There are 1 977 species of wild vascular plant,belonging to 815 genera,186 families.Hualong Mountain is the richest area of rare and endangered plant resources in Shaanxi Province;for protected plants of the state level,it is now known that there are 22 families,30 genera,and 33 species altogether,of which one species belongs to the first class of protected plant,11 species to the second class,and 21 species to the third class;of which 2 species belong to endangered species,14 species to rare species,and 17 species to vulnerable species.Many ancient plants,mainly the tertiary relic plants are among the rare and endangered plants of Hualong Mountain,single species and few species genera 16 and endemic to China genera 10,i.e. 53.3% and 33.3% of the total number of the protected genera of the state in this region respectively.These resources of rare and endangered plants are of high value to the exploitation and utilization in aspects of medicine,timber,flower and chemical industry, etc .Based on the present condition and main problems about conservation of rare and endangered plants,it is proposed that conservation measures should be:Relying on the backing of Hualong Mountain Nature Reserve of Shaanxi Province,strengthen in situ conservation and actively launch ex situ conservation,combine organically nature conservation and resource development,so as to achieve scientific conservation and sustainable utilization of rare and endangered plant resources of Hualong Mountain.