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植物研究 ›› 2008, Vol. 28 ›› Issue (2): 249-253.doi: 10.7525/j.issn.1673-5102.2008.02.025

• 论文 • 上一篇    下一篇

长白山林区核桃楸种群数量动态变化的研究

马万里1;罗菊春2;荆 涛2;Joni Kujansuu2   

  1. (1.内蒙古师范大学生命科学与技术学院,生物多样性保护研究中心,呼和浩特 010022) (2.北京林业大学资源与环境学院,北京 100083)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-03-20 发布日期:2008-03-20
  • 通讯作者: 马万里
  • 基金资助:
     

Study on Dynamics of Juglans mandshurica Population from Changbai Mountain

MA Wan-Li;LUO Ju-Chun;JING Tao;Joni Kujansuu   

  1. (1.College of Life Science and Technology & Biodiversity Conservation Center in Inner Mongolia Normal University,Huhehot 010022) (2.The College of Environment and Resources in Beijing Forestry University,Beijing 100083)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-03-20 Published:2008-03-20
  • Contact: MA Wan-Li
  • Supported by:
     

摘要: 运用种群年龄结构、存活曲线统计和Leslie模型对长白山核桃楸种群在水胡林、针阔混交林、核桃楸占优杂木林和杂木林4种不同群落类型中种群数量动态变化进行了研究和预测。结果表明,核桃楸种群表现出衰退型的年龄结构特点,幼苗和幼树比例较小,种群在幼年期死亡率较高,反映出核桃楸种群15~20龄在个体经历了比较强烈的环境筛作用;Leslie模型预测显示,核桃楸幼苗数量和种群总数量在今后35年基本呈下降趋势,除在核桃楸占优的林分中种群维持增长外,在其它3中森林类型都表现出衰退趋势。因此,促进核桃楸的天然更新、加强幼苗幼树的抚育工作对长白山地区核桃楸种群的发展至关重要。

关键词: 核桃楸种群, 年龄结构, 存活曲线, Leslie模型, 长白山

Abstract: Based on demography of the age structure,survivorship curve and prediction from Leslie matrix model,the dynamic process of the Juglans mandshurica population at J. mandshurica and Fraxinus mandshurica forest, dominant J. mandshurica forest, mixed forest and mixed broadleaf-conifer forest, respectively, in Mt. Changbai of northeast China,was discussed and predicted. The results indicate that age structure of J. mandshurica population belongs to the type of decline, due to the characteristics of seedling and saplings with a small proportion of total population and high mortality rate at early stage, and that J. mandshurica population possibly underwent environmental screening at past 15-20 years. Leslie matrix model predicts basically that population of seedling and total numbers of J. mandshurica population, will have a decreasing trend in next 35 years. Although the population will be increased at dominant J. mandshurica forest, populations of J. mandshurica at the other three kinds of forests will be declined in the future. Therefore, it is essential to promote forest natural regeneration and to foster to seedlings and saplings as well as young J. mandshurica forest rationally.

Key words: Juglans mandshurica population, Age structure, Survivorship curve, Leslie matrix model, Changbai Mountain

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