摘要
论述了玉兰属植物的起源和地理分布,认为:①木兰属起源于白垩纪的阿普第阶期,因为在阿普第阶至阿尔必阶期不少地区有Magnolia植物化石或孢粉的发现;②玉兰属植物起源于阿普第阶期或巴列姆阶期,我国新疆、山东、吉林等地有木兰属的温带成分,即有玉兰属植物化石或孢粉出现;③玉兰属共计40种,中国分布区内种数有36种,占该属植物总种数的90%.中国为玉兰属植物起源、分布和多样性中心,其中又以河南、陕西、湖北及四川东北部的广大山区分布种类最多、栽培面积最大,是玉兰属植物在中国的分布中心、起源中心和多样性中心.
The origin and geographical distribution of Yulania Spach were studied in this paper. The results were： ①Magnolia Linn. Came of the Aptian era of Cretaceous because the plant and palynofloristical fossils of Magnolia Linn. were found in the stratum of this era. ②Yulania Spach came of the Aptian or Barremian era because the plant and palynofloristical fossils of Yulania Spach of this era were found in Xinjiang, Shandong and Jilin etc. provinces of China. ③Yulania Spach contained 40 species, China has 36 species. China is the center of origin, distribution and diversity of Yulania Spach, especially the vast mountainous area in Henan, Shaanxi and the common boundary of Hubei and Sichuan.
出处
《河南科学》
2008年第8期924-927,共4页
Henan Science
基金
国家林业局"948"项目"木兰科新品种引种及繁育技术的研究"(2003-4-19)
关键词
玉兰属植物
起源
地理分布
现代分布
分布中心区
plant of Yulania Spach
origin
geographical distribution
modern distribution
distribution center
作者简介
刘荷芬（1957-），女，河南沁阳人，副编审，主要从事科技期刊编辑和区域经济研究．
