三峡库区重庆市森林中的裸子植物区系特征及分布  

The Flora and Distribution of Gymnosperms in Chongqing Forest in Three Gorges Reservoir Region

作　　者：刘玉成[1] 

机构地区：[1]西南大学生命科学学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2008年第6期111-115,共5页Journal of Southwest University(Natural Science Edition)

摘　　要：重庆市森林裸子植物区系有7科26属44种.其生活型是:常绿乔木35种,落叶乔木4种,灌木5种均为常绿.7个科有5个分布区类型,以北温带分布区类型为主;属的分布区类型有6个,中国特有7个属,北温带分布8个属.有珍稀濒危植物15种,国家重点保护野生植物14种,不重复计算,合计18种.分布在海拔1 600 m以上的9种,1 500 m以下的22种.水平分布以大巴山区种类最多达30种,渝中、西部最少,仅有11种.The flora of Chongqing forest gymnosperms is composed of 44 species, belonging to 7 families and 26 genera and their life forms include 35 species of evergreen tree, 4 species of deciduous tree and 5 species of evergreen shrub. The floristic elements of the 7 families are composed of 5 areal-types, which are mainly N. Temperate. There are 6 area-types of genus, of which 7 genera are endemic to China and 14 national key protected wild plant species, 18 species in total. Nine species of gymnosperms are distributed in areas with an altitude of 〉1 600 m, 22 species at the altitude below 1 500 m. Horizontally, the Dabashan Mountains have most diversified gymnosperms, consisting of 30 species, while only 11 species are distributed in the western and central part of Chongqing.

关 键 词：重庆市森林 裸子植物 植物区系 植物分布 

分 类 号：Q949.6[生物学—植物学]