中国木兰科植物的地理分布  

Geographical Distribution of Magnoliaceae Plants in China

作　　者：闫双喜[1] 李永华[1] 位凤宇[1] 

机构地区：[1]河南农业大学林学园艺学院,郑州450002

出　　处：《武汉植物学研究》2008年第4期379-384,共6页Journal of Wuhan Botanical Research

基　　金：河南省重点科技攻关项目(0323011800)

摘　　要：对木兰科植物的物种丰富度、特有性指数、相似性系数、垂直分布和水平分布进行了系统的研究。结果表明：木兰科植物的分布中心在滇、粤、黔、湘一带；特有性中心在滇、藏、台等地；相似性系数较大的是地理上相近、环境异质性较小的地区；垂直分布中心在海拔1000—2000m；水平分布中心在北纬20°～25°和东经90°～100°之间。The family Magnoliaceae are distributed in tropical, subtropical and temperate zones, concen- trating in the areas nearby the tropic zone. There are 11 genera with more or less 121 species ,one subspecies, eight varieties and one form in the world. Their species richness, species endemic index, similarity coefficient, vertical and horizontal distribution are studied in this paper. The results showed that their species richness center is mostly in Yunnan, Guangdong, Guizhou and Hunan provinces. Otherwise their endemic center is usually in Yunnan, Tibet and Taiwan. Their similarity coefficient is mostly affected by the geographic localities and the different essence of environment. Their vertical distribution center occurs between 1000 -2000 m above sea level and its horizontal center limits about 20° -25°N and 90° -100°E.

关 键 词：木兰科 物种丰富度 特有性指数 相似性系数 垂直分布 水平分布 

分 类 号：Q948[生物学—植物学]