茂兰自然保护区珍稀濒危植物石山木莲的资源现状及保护

石山木莲(Manglietia calcarea X.H.Song)是贵州特有珍稀濒危植物。为了解茂兰保护区石山木莲资源现状，采用样线调查法，对茂兰保护区石山木莲资源分布现状进行调查。结果表明：茂兰保护区石山木莲资源分布狭窄、数量稀少，仅发现8个分布点共计10株，已处于濒危状态。主要分布在保护区洞多、洞常、瑶寨、卡记海拔650~820 m之间的山坳、山腰、洼地、槽谷的次生林中、闲置地边、黔竹林内及密林下。根据石山木莲在茂兰保护区的地理分布特点和资源现状，分析其濒危原因，探讨实现其有效保护的措施。

The Status and Protection of Rare and Endangered Plants Manglietia calcarea X.H.Song in Maolan National Nature Reserve

Manglietia calcarea X.H.Song is endemic rare and endangered plants in Guizhou. In order to understand the resource status of Manglietia ealcarea X.H.Song in Maolan National Nature Reserve, the author investigated the status of the distribution of the Manglietia calearea X.H.Song by using line transect survey method. The results showed that： Manglietia calearea X.H.Song was narrow distribution and still rare, founded only 8 distribution points total 10, had been endangered. They were mainly distributed in Dongduo, Dongchang, Yaozhai and Kaji, where the elevation were between 650-820 m, which were col, mountainside, depression, trough the secondary forest, idle land side, under the bamboo forest and jungle. According to the feature of the geographical distribution and resource status of the Manglietia calcarea X.H.Song in Maolan Nature Reserve, the author also analyzed the reasons of endangered and investigation the effective protection measures.