九顶山自然保护区珍稀濒危植物资源调查研究

九顶山自然保护区有25种中国珍稀濒危保护植物名录中所列的珍稀濒危植物，包括2个濒危种，10个渐危种，13个稀有种，其中1级保护植物2种，2级保护植物12种，3级保护植物11种．这些珍稀濒危植物在园艺、药用、理论研究等方面具有重要价值．区系分析表明本区珍稀濒危植物多发生于第三纪以前，温带性质显著，中国特有成分占优势，和华中及青藏高原植物区系联系密切．

Floristic Study of the Rare and Endangered Plants in Jiuding Mountain Nature Reserve

There are about 25 species of rare and endangered plants in the Jiuding Mountain Nature Reserve. 32.5% of all the rare and endangered plant species in Sichuan Province and 6.6% of such taxa in China. According to current classification criteria, there are 2 endangered species, 10 vulnerable species and 13 rare species in the reserve, 2 species have been categorized as first-level protected species, 12 as second-level protected species and 11 as third-level protected species. The Jiuding Mountain Nature Reserve constitutes an important reservoir of rare and endangered plants in Sichuan Province. The rare and endangered plant species are relatively original; notably possess a temperate nature; their Chinese endemic elements are notable and have a strong relationship with those in Central China and Qinghai-Xizang Highland.