摘要
陕西省青木川自然保护区有种子植物905种,隶属于126科501属,其中裸子植物5科11属15种,被子植物121科490属890种(双子叶植物108科401属762种,单子叶植物13科89属128种)。中国特有属20属,中国特有种261种。该区系的基本特征是:植物种类丰富,特有程度高;区系成分复杂,表现出亚热带向温带过渡的特点,并以温带区系成分占优势;在中国植物区系上处于中国-日本森林植物亚区的华中地区和华北地区的黄土高原地区与中国-喜马拉雅森林植物亚区的横断山脉地区的交汇地带,多种区系成分汇集,与周邻联系广泛;植物区系起源古老,有较多的残遗植物;珍稀保护物种丰富,共计有《国家重点保护野生植物名录》级保护植物4种,级25种。
In Qingmuchuan Nature Reserve of Shaanxi,there are 905 species of seed plant belonging to 126 families and 501 genera and they include 15 species of gymnosperms belonging 5 families and 11 genera and 890 species of angiosperms belonging to 121 families and 490 genera （762 species of dicotyledons belonging to 108 families and 401 genera and 128 species of monocytoledons belonging to 13 families and 89 genera）. They include 20 endemic genera and 261 endemic species to China. Their flora characteristics are that the florae contain abundant plant species, have highly endemic compositions and consist of diverse flora elements presenting transitional features from the subtropical zone to the temperate zone and their temperate elements dominates ;they distrubute in the crossed area between Central China areal and Loess Plateau areal of Sino-Japan Forest Plant Subregion and Hengduanshan Mountain areal of Sino-Himalaya Forest Plant Subregion,assemble diverse flora elements ,widely relate to their surrounding florae ;they are of ancient origin and contain many relict plants ;they contain abundant precious plant species under conservation ,which include four species under class I convervation and 25 species under class Ⅱ conservation listed in the list of important wild plants under national conservation of China.
出处
《西北植物学报》
CAS
CSCD
北大核心
2006年第6期1244-1249,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
中国科学院知识创新工程生物领域重要方向项目(KSCX2-1-06B)
关键词
种子植物
区系特征
青木川自然保护区
陕西
seed plant
flora characteristics
Qingmuchuan Nat ure Reserve
Shaanxi
