丹霞地貌习水自然保护区木本植物区系研究  

Study on Woody Flora of Danxia Landform in Xishui Natural Reserve

作　　者：徐德静[1] 王鹏鹏[1] 何跃军[1] 郭能彬 张仁波[1,3] 吴长榜[1] 穆军 李崇清 

机构地区：[1]贵州大学林学院,贵州贵阳550025 [2]贵州赤水桫椤国家级自然保护区管理局,贵州赤水564703 [3]遵义师范学院生命科学学院,贵州遵义563002 [4]习水自然保护区管理局,贵州习水564600

出　　处：《贵州农业科学》2013年第10期19-23,共5页Guizhou Agricultural Sciences

基　　金：贵州省科技厅社会发展攻关项目"孑遗植物桫椤种群濒危机制及其保育技术研究"[黔科合SY(2010)3040];贵州省自然科学基金项目"赤水河流域种子植物资源调查研究"[黔科合J字LKZS(2012)21]

摘　　要：为了解丹霞地貌植物区系地域分异特征和森林植物群系特性,揭示古地理环境与植被性质之间的密切关系,为习水植物区系的深入研究积累理论资料,同时为"中国丹霞世界自然遗产"保护利用及相关研究提供参考,对习水自然保护区木本植物区系特征进行了系统研究。结果表明:习水自然保护区木本植物共有103科307属910种,其中,裸子植物7科14属19种;被子植物95科292属890种,含双子叶植物92科280属853种,单子叶植物3科12属37种;蕨类植物1科1属1种。少种科和少种属在植物区系组成中所占比例较大,植物区系组成中最大科是蔷薇科,最大属是悬钩子属;科的分布区类型中,热带分布和温带分布分别占总科数的57.47%和39.08%;属的分布区类型中,热带分布和温带分布分别占总属数的51.67%和44.33%。区系地理成分复杂多样,具有由亚热带向暖温带过渡的性质,区系中包含国家级重点保护珍稀濒危木本植物15种,具有极其重要的保护价值。In order to investigate the characteristics of flora areal differentiation and forest plant formations in Danxia landform, and to reveal the intimate relationships between ancient geographical environment and vegetation characteristics, to accumulate theory data for further research of flora in Xishui, meanwhile to provide references for the protection, utilization, and related researches for China danxia world natural heritage, study on the characteristics of woody flora in Xishui Natural Reserve were systematically conducted. The results showed that there were 910 species of woody plants in the reserve, which belong to 103 families in 307 genera. Among them the gymnosperm had 19 species, 14 genera in 7 families, the angiosperm had 890 species, 292 genera in 95 families with dicotyledon 853 species, 280 genera in 92 families, and monocotyledon 37 species, 12 genera in 3 families, and 1 species of fern. For the composition, small-to-mid size genera and families took larger proportion, Rosaceae was dominant family, and Rubus was dominant genus. In the areal-type of families, subtropic and temperate accounted 57.47% and 39.08%, respectively, and in areal-type of genera, both of them accounted for 51.67~ and 44.33~, respectively. Therefore, the flora elements are complicated coming from different geographical types, and had the characteristics of transition from sub-tropical to warm temperate. In the flora, 15 species of national level rare and endangered were found in the natural reserve, with important protective values.

关 键 词：木本植物 植物区系 丹霞地貌 习水自然保护区 

分 类 号：Q948[生物学—植物学]