img

官方微信

高级检索

中国沙漠 ›› 2002, Vol. 22 ›› Issue (6): 571-575.

• 研究论文 • 上一篇    下一篇

沙坡头地区人工植被油蒿种群结构与更新的研究

马凤云, 李新荣, 龙利群, 张景光   

  1. 中国科学院 寒区旱区环境与工程研究所沙坡头沙漠试验研究站, 甘肃 兰州 730000
  • 收稿日期:2002-07-29 修回日期:2002-09-08 出版日期:2002-12-20 发布日期:2002-12-20
  • 作者简介:马风云(1965-)男(汉族),甘肃古浪人,在读博士,从事干旱区植物生态学研究。
  • 基金资助:
    中国科学院寒区旱区环境与工程研究所知识创新工程项目(CACX210031,210094)资助

Population Structure and Regeneration of Planted Artemisia ordocisa in Shapotou

MA Feng-yun, LI Xin-rong, LONG Li-qun, ZHANG Jing-guang   

  1. Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2002-07-29 Revised:2002-09-08 Online:2002-12-20 Published:2002-12-20

摘要: 采用野外调查和比较分析的方法,对沙坡头地区人工植被油蒿种群的结构和更新进行了研究。通过对不同固沙起始年代油蒿种群大小结构的分析发现,幼树个体的数量较多,中等大小的成年个体数量少,老龄个体的数量极少。年限较短的人工植被区油蒿幼树个体的数量多于年限较长的人工植被区,而油蒿幼苗的数量则呈相反的趋势。油蒿幼苗在不同的地形中分布数量也不同,丘间地有较多的幼苗,背风坡幼苗特别少。油蒿成年个体在人工植被区中呈均匀分布,油蒿幼苗则呈聚集分布。

关键词: 油蒿种群结构, 油蒿更新, 沙坡头地区

Abstract: By employing field survey and comparison analysis, the population structure and natural regeneration of Artemisia ordosica in Shpotou artificial vegetation areas were studied. Analysis of size structure and spatial distribution patterns showed the number of saplings exceeds that of individuals in middle size class, and the number of aged individuals was at least in every plots. There were more saplings in short-time artificial vegetation areas than in long-time artificial vegetation areas, and on the contrary, the number of seedlings showed the reverse trend. The number of seedling differed at different terrains, more seedlings in the inter-dune and less in the leeward. The adults showed uniform distribution, while the seedlings showed clumped distribution.

Key words: Shapotou area, population structure of Artemisia ordosica, regeneration

中图分类号: