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中国沙漠 ›› 2005, Vol. 25 ›› Issue (6): 964-969.

• 研究简报 • 上一篇    

甘肃沙葱的地理分布与群落结构特征

刘世增, 马全林, 严子柱, 贺访印   

  1. 甘肃省治沙研究所, 甘肃武威 733000
  • 收稿日期:2005-01-17 修回日期:2005-03-21 出版日期:2005-12-20 发布日期:2005-12-20
  • 作者简介:刘世增(1963-)男(汉族),甘肃永昌人,副研究员,主要从事荒漠化防治与沙区资源利用技术研究。E-mail:shzliu@gsdcri.com
  • 基金资助:
    甘肃省科学事业费项目"沙葱生态特性及人工丰产栽培技术试验研究"(QS022-C31-066)资助

Geographical Distribution and Characteristics of Community Structure of Allium mongolicum Regel in Gansu Province

LIU Shi-zeng, MA Quan-lin, YAN Zi-zhu, HE Fang-yin   

  1. Gansu Desert Control Research Institute, Wuwei 733000, Gansu, China
  • Received:2005-01-17 Revised:2005-03-21 Online:2005-12-20 Published:2005-12-20

摘要: 甘肃沙葱主要分布于河西走廊北部荒漠区及白银、兰州市的西北部部分县(区)的黄土低山丘陵区,分布区总面积约125 715.9km2。有气候和土壤因素形成的两种生态类型,且沙葱荒漠的物种组成成分相对简单,共有76种,分属14科45属;群落类型可划分为5类14个群丛组合,表现出以超旱生小灌木层片、强旱生小半灌木层片及沙旱生草层片为主的旱生结构特征。此外,甘肃沙葱种群及群落表现出均匀度低、优势度高、分布范围广、群落结构单一、适应性极强、具有地域性等特征。

关键词: 甘肃, 沙葱, 地理分布, 群落结构

Abstract: Allium mongolicum Regel is mainly distributed in the north of Hexi corridor, Baiyin and northwest of Lanzhou, and its total distribution area is 125 715.9 km2 in Gansu province.There are two eco-types came into being from climate and soil of Allium mongolicum Regel.Allium mongolicum Regel community has 76 species that belong to 14 families and 45 genuses, and its community types include 5 types and 14 community groups.The community structure is xerophytic structure made of small bush and semi-bush and sand or xerophytic grasses.In addition, Allium mongolicum Regel population is with lower evenness and high predominance and wide distribution and simple community structure and good adaptability and region in Gansu province.

Key words: Gansu province, Allium mongolicum Regel, geographical distribution, community structure

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