地理研究 ›› 2011, Vol. 30 ›› Issue (3): 531-539.doi: 10.11821/yj2011030014

• 地表过程研究 • 上一篇    下一篇

长白山北坡林线岳桦种群与土壤关系

王晓东, 刘惠清   

  1. 东北师范大学城市与环境学院,长春 130024
  • 收稿日期:2010-04-04 修回日期:2010-09-10 出版日期:2011-03-20 发布日期:2011-03-20
  • 通讯作者: 刘惠清(1949-),女,吉林长春人,教授,博士生导师。主要从事综合自然地理,景观生态学研究。 Email:liuhq595@nenu.edu.cn E-mail:liuhq595@nenu.edu.cn
  • 作者简介:王晓东(1971-)男,辽宁盘锦人,博士生,专业方向为自然地理学。 E-mail: wangxd219@nenu.edu.cn
  • 基金资助:

    国家自然科学基金资助项目(40871005)

Population dynamics of Betula ermanii associated with soil change on treeline of northern slope of Changbai Mountains

WANG Xiao-dong, LIU Hui-qing   

  1. College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, China
  • Received:2010-04-04 Revised:2010-09-10 Online:2011-03-20 Published:2011-03-20

摘要: 以长白山北坡林线为研究区,选择4块样地(83个样方)进行岳桦种群径级结构与土壤理化性质关系的研究。采用单因子方差等方法分析土壤理化性质(有机质、全氮、全磷、砾石含量)和岳桦种群(灌丛和乔木)径级结构的关系,采用相关分析法做岳桦种群与土壤性质的动态变化分析。结果表明土壤因子对岳桦种群的扩张有一定的制约作用,但不足以决定林线的进退, 岳桦通过不断调整生活型克服土壤约束以应对气候变化。

关键词: 长白山北坡, 林线变动, 岳桦种群, 种群扩张, 土壤性质

Abstract: This paper, taking the treeline of northern slope of Changbai Mountains as the research object, selected 4 plots (83 quadrats) to study diameter-class structure of Betula ermanii population and soil physical and chemical properties. Four indices of soil properties (SOM, TN, AN and gravel contents) and diameter-class structure of two life forms (shrub and single-trunk) were analyzed by ANOVA, correlation analysis and other statistical analysis. The relationships between population dynamics and soil change were investigated by correlation analyses. The results showed soil physical and chemical properties on different quadrats had obvious difference with different expansion of Betula ermanii population. Soil factor had a certain restrictive effect on population dynamics. However, soil factor did not play a crucial role in treeline shifts and population expansion. The gradual weakening of soil properties has an effect on treeline shifts with the passage of time. The Betula ermanii population tended to continuously adjust its life forms to adapt air temperature change in order to overcome soil restrictions.

Key words: northern slope of Changbai Mountains, treeline change, Betula ermanii, population expansion, soil properties