【摘要】 运用植物区系地理学基本原理,对内蒙古阴山山脉乌拉山段种子植物属的组成及地理成分进行了统计分析.结果表明:乌拉山种子植物区系包含227属,约占内蒙古全区总属数的34.8%;属的分布区类型中,以温带成分为主,占非世界分布总属数的80.9%,其中,北温带分布占到了54.2%,旧大陆温带分布占18.0%,体现出乌拉山种子植物的分布与所处自然地理位置及其气候带相适应的结果.从生活型看,草本植物占绝对优势.更多还原

【Abstract】 With basic methods and principles of the floristic geography,genera composition and geography elements of seed plants in Wulashan Mountain of Inner Mongolia have been investigated and analyzed,the results are as follows:there are 227 genera in that flora,which was 34.8% of all the genera number in Inner Mongolia.The temperate component is absolutely dominant:80.9% of the non world components in genera,among them,north temperate component is 54.2% and old world temperate component is 18.0%.The plants of herbage here is dominant in life styles.更多还原