地理研究

地理研究 ›› 2007, Vol. 26 ›› Issue (1): 91-100.doi: 10.11821/yj2007010012

• 城市与乡村 • 上一篇    下一篇

六盘山植物区系基本特征的初步分析

戴君虎1, 白 洁1,2, 邵力阳1,2, 韩 超1,2, 崔海亭3   

  1. 1. 中国科学院地理科学与资源研究所,北京 100101;
    2. 中国科学院研究生院,北京 100049;
    3. 北京大学环境学院,北京100871
  • 收稿日期:2006-06-09 修回日期:2006-09-25 出版日期:2007-01-25 发布日期:2007-01-25
  • 作者简介:戴君虎 (1968-),男,陕西蓝田人,博士,副研究员。主要研究方向为植物地理学和植被生态学。 E-mail :daijh@igsnrr.ac.cn
  • 基金资助:

    国家自然科学基金资助(40471047)

A primary analysis of the flora on Liupan Mountains: its nature and characteristics

DAI Jun-hu1, BAI Jie1,2, SHAO Li-yang1,2, HAN Chao1,2, CUI Hai-ting3   

  1. 1. Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;
    2. Graduate School of the Chinese Acadamy of Sciences, Beijing 100039, China;
    3. College of Environmental Sciences, Peking University, Beijing 100871, China
  • Received:2006-06-09 Revised:2006-09-25 Online:2007-01-25 Published:2007-01-25
  • Supported by:

    国家自然科学基金资助(40471047)

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65 | 14

摘要： 六盘山位于陕甘宁交接地区,属于半湿润气候向半干旱气候的过渡带,是黄土高原生物多样性最丰富的地区之一,有维管植物836种,隶属于93科,359属。本区属于泛北极植物区、中国-日本森林植物亚区、华北植物地区的黄土高原亚地区。全部种子植物可分为13个分布区类型和12个变型,以北温带分布类型为主,与其他植物区系联系广泛,但特有属较贫乏。六盘山与小陇山、太白山和中条山的属相似性系数较高,均达60%以上,表明几座山体处于相似的生物气候背景之下,地理隔离性不明显。与贺兰山的属相似性系数低于60%,因为贺兰山位于干旱的荒漠与半荒漠区,可能有地理隔离作用。

关键词: 六盘山, 植物区系, 过渡带, 相似性指数

Abstract: The Liupan Mountains are situated in the intersection of Ningxia Hui Autonomous Region, Shaanxi, and Gansu provinces, between 35°-36°10'N and 105°4'-106°30'E. The region is not only the transitional zone between semi-humid and sub-arid climate, but also has rich biodiversity on the Loess Plateau, even in Northwest China, with regional vegetation distributing from warm temperate deciduous board-leaved forest zone, forest-grassland zone to desert-grassland zone. Studies on the plants' floras of Liupan Mountains show that it comprises 836 species of vascular plant, belonging to 93 families and 359 genera. Its floras can be attributed to the following categories:Loess Plateau subregion, North China region, Sino-Japan forest subkingdom, and Holarctic kingdom. There are 13 distribution types and 12 subtypes of genera of seed plants, of which North temperate elements play an important role in the flora. The plant genera flora on Liupan Mountains connect closely with other floras but have little endemic genera. The floristic affinities of the study area with neighboring three mountains (Taibai, Xiaolong and Zhongtiao mountains) are close, and their coefficients of plant genera flora all exceed 60%, indicating that these mountains have similar bio-climatic conditions without any clear vicariance. While the coefficient with Helan Mountains is under 60%, because the Helan Mountains are located in arid desert and semi-desert region and it is supposed that there is intense vicariance in nature in the development of the Yellow River in Ningxia and Gansu.

Key words: Liupan Mountains, flora, transitional zone, endemic genera, coefficient of similarity