摘要
珍稀濒危野生植物作为生物多样性的重要组成部分,是保护生物学研究的核心内容之一.有关濒危物种分布区的研究对于生物多样性保护理论和濒危机制的探讨具有重要意义.本文基于文献资料和标本记录,以《国家重点保护野生植物名录》所列物种(包括即将发布的物种)为研究对象,从全国尺度上对我国保护植物的区系成分组成以及地理分布特征进行了系统分析.结果表明:1)我国国家重点保护植物共计2177种,隶属于130个科、484个属;2)植物区系成分复杂多样,既具有明显的热带性质,起源古老,同时也有明显的温带过渡性,且特有成分丰富;3)水平地理分布极不均匀,主要集中分布在西南地区和台湾,其中云南、四川、广西、西藏、贵州、台湾为保护植物分布的热点地区;4)垂直分布范围很广,主要集中于800～1600m的低山和中山的海拔范围内,海拔梯度呈现单峰规律.本研究将为我国生物多样性优先保护区的确定和生物多样性保护政策的制定提供理论依据与参考.
Rare and endangered wild plants, being an important component of biological diversity, have become one of the hot issues for conservation biology, and the study of their geographic distribution is of significance to the theories of biodiversity conservation and the mechanisms of their endangerment. In this study, the floristic elements and geographic distribution characteristics of national key protected wild plants in China were analyzed at national scale, based on the information from published literatures and the specimen records mainly from the Chinese Virtual Herbarium. The results indicated that there are 2 177 species of protected plants, belonging to 130 families and 484 genera. The flora is characteristic of extremely diversified, old and endemic, and obviously rich in tropical and temperate elements. The geographic distribution of the protected plants is uneven, and concentrates in the southwestern regions and Taiwan of China. Yunnan, Sichuan, Guangxi, Tibet, Guizhou and Taiwan are the hotspots of protected plant diversity. The protected plants have a pretty wide vertical distribution range, but mainly distribute in lower and middle mountains with an elevation from 800 m to 1 600 m. The spatial pattern of the protected plants is unimodal along elevation gradient. This study would provide sound basis for the identification of the priority areas of biodiversity conservation, and the establishment of conservation strategies.
出处
《应用生态学报》
CAS
CSCD
北大核心
2008年第8期1670-1675,共6页
Chinese Journal of Applied Ecology
基金
科技部国家科技支撑计划重大项目(2007BAC03A08-8)
科技部国家科技基础条件平台建设资助项目(2005DKA21401)
关键词
保护植物
区系
地理分布
热区
生物多样性保护
GIS
protected plants
flora
geographic distribution
hotspot
biodiversity conservation
GIS.
