武陵山地区珍稀濒危植物及其保护利用

武陵山地区分布的国家级珍稀濒危植物共47种,隶属于26科42属,其中保护植物属国家一级的2种,二级的17种,三级的28种。对其种类组成、濒危等级现状、区系成分、地理分布及利用价值进行初步分析。结果表明,属濒危的种类3种,易危的20种,依赖保护的13种,需予关注的11种,武陵山地区珍稀濒危植物不仅有古老、原始、孑遗的特性,且亚热带性质明显,中国特有现象极为突出。水平分布可分为南、北两个中心,垂直分布以500~2000m的中山地带为主。武陵山地区的珍稀濒危植物除部分具一定直接经济价值外,多数都有重要的间接经济价值。据此提出武陵山地区珍稀濒危植物的保护利用对策。

The rare and endangered plants in Wulingshan Region and its conservation and utilization

The total number of Chinese rare and endangered plants distributed in Wulingshan Region are 47 species, which belong to 26 families and 42 genera,including 2 species of the first class conserved plants of China, 17 species of the second class, and 28 species of the third class. The present paper analyzed species component,endangered grade,floristic feature,and geographic distribution of these plants. The results show that 3 species are endangered, 20 species are vulnerable, 13 species are conservation-dependent, and 11 species are least concern. These rare and endangered plants in this region are not only characterized by ancient, primeval and survival species, but also many subtropical species and endemic species in China. Their horizontal distribu-tion can be divided into two centers of south and north; vertical distribution is dominated by mountain zone with 500-2 000 m. A small part of these rare and endangered plants in Wulingshan Region have direct economic value;most of them show important indirect economic value. Based on the analysis,the corresponding conserved policies of these rare and endangered plants in Wulingshan Region were put forward.