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中国沙漠 ›› 2014, Vol. 34 ›› Issue (5): 1268-1276.DOI: 10.7522/j.issn.1000-694X.2013.00437

• 生物与土壤 • 上一篇    下一篇

兰州半荒漠植被区红砂(Reaumurta soongorica)种群数量动态

王军1,2, 李真3, 周资行1, 王平1, 焦健1, 李毅1   

  1. 1. 甘肃农业大学 林学院, 甘肃 兰州 730070;
    2. 永登县林业技术工作管理站, 甘肃 永登 730300;
    3. 中国药科大学 生命科学技术学院, 江苏 南京 210009
  • 收稿日期:2013-06-06 修回日期:2013-07-24 出版日期:2014-09-20 发布日期:2014-09-20
  • 作者简介:王军(1983-),男,甘肃永登人,硕士研究生,主要研究方向为植物生态学。Email:751919087@qq.com
  • 基金资助:
    国家国际科技合作专项(2012DFR30830);国家科学技术部(农转资金)项目(2009GB2G100375)资助

Preliminary Study on Reaumurta soongorica Population Dynamics in Lanzhou Semi-desert Vegetation Area

Wang Jun1,2, Li Zhen3, Zhou Zihang1, Wang Ping1, Jiao Jian1, Li Yi1   

  1. 1. College of Forestry, Gansu Agricultural University, Lanzhou 730070, China;
    2. Yongdeng Forestry Technical Work Station, Yongdeng, 730030, China;
    3. School of Life and Technology, China Pharmaceutical University, Nanjing, 210009, China
  • Received:2013-06-06 Revised:2013-07-24 Online:2014-09-20 Published:2014-09-20
  • Contact: 焦健(Email:jiaoj@gsau.edu.cn)

摘要: 对兰州市永登县半荒漠植被区天然分布的红砂(Reaumurta soongorica)种群实地调查取样,利用红砂植株地径大小与相应年轮年龄的关系,得出回归方程,求出各地径对应年龄,编制静态生命表、分析动态指数、存活曲线、生存分析曲线。结果表明:各生境红砂种群均表现出新苗和幼株丰富,占种群株数的比例大;所有样地存活曲线均接近于Deevev-Ⅲ型(凹型);静态生命表显示,生境异质性,特别是水分差异,致使红砂种群表现出2种不同的环境适应策略;各生境种群动态指数均基本为正值,充分说明样地内的红砂种群基本处于发育状态,整体上是稳定增长的。

关键词: 红砂(Reaumurtasoongorica), 种群数量动态, 年龄结构, 静态生命表, 动态指数, 存活曲线, 半荒漠植被区

Abstract: In this paper, we sampling surveyed on the Reaumurta soongorica populations naturally distributed in semi-desert vegetated area of Yongdeng, Lanzhou. Through analysised the relationship between R. soongorica stem basal diameter and age, the regression equation was established to get the age of the corresponding basal diameter. We made the static life table, analyzed the dynamics index, the survival curves and survival analysis curves. The results showed that: the R.soongorica populations in different habitats had lots of seedlings, the seedlings accounted for large proportion of the populations. The population survival curves in all plots were close to Deevey-Ⅲ type (concave). The static life tables showed the R. soongorica populations adopted two kinds of different strategy for the habitat heterogeneity, especially different water conditions. The population dynamics index Vn were positive value, fully illustrated the R. soongorica populations were in the developing state, and the overall populations kept on the tendency with steady increasing.

Key words: Reaumurta soongorica, population dynamics, age structure, static life table, dynamic index, survival curve, semi-desert vegetated area

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