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林业资源管理 ›› 2009, Vol. 0 ›› Issue (6): 64-69.

• 科学技术 • 上一篇    下一篇

兴安落叶松天然林2种林型林分更新特征

玉宝1,2, 乌吉斯古楞3, 王百田1, 王立明4   

  1. 1.北京林业大学 水土保持学院,北京 100083;
    2.国家林业局管理干部学院,北京 102600;
    3.北京林业大学 林学院,北京 100083;
    4.武警警种指挥学院,北京 102202
  • 收稿日期:2009-08-20 修回日期:2009-10-14 出版日期:2009-12-28 发布日期:2020-12-18
  • 作者简介:玉宝(1976-),男(蒙古族),内蒙古通辽人,博士生,从事生态学理论与生态控制技术研究。Email:nmlyb8@sina.com
  • 基金资助:
    林业公益性行业科研专项(200704031);国家林业局森林生态系统定位研究资助项目(2001-01)

Characteristics of Stand Regeneration of Two Forest Types in Natural Larix gmelinii Forest

YU Bao1,2, WU Jisiguleng3, WANG Baitian1, WANG Liming4   

  1. 1. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083,China;
    2. State Academy of Forestry Administration, Beijing 102600, China;
    3. College of Forestry, Beijing Forestry University, Beijing 100083,China;
    4. Command College of Armed Police Forces, Beijing 102202,China
  • Received:2009-08-20 Revised:2009-10-14 Online:2009-12-28 Published:2020-12-18

摘要: 分析了内蒙古大兴安岭林分结构对兴安落叶松林更新的影响。结果表明:1)年龄56~65a草类-落叶松林平均更新密度达1 363株/hm2,较54~63a杜香-落叶松林和36~48a草类-落叶松林分别高12.8%,36.5%。2)年龄36~65a,密度315~3 263株/hm2范围内的草类-落叶松和年龄54~63a密度865~2 241株/hm2范围内的杜香-落叶松林,在其它条件相近情况下,随着林分年龄和密度增加,林分更新呈增加趋势;随着枯倒木数量和其腐烂程度的增加,更新密度增加;随着林下草本和灌木盖度增加,更新密度呈下降趋势。3)不同水平格局的林分更新不同,当聚集分布、随机分布和均匀分布时,平均更新密度分别为1 415株/hm2,1 165株/hm2,118株/hm2

关键词: 兴安落叶松, 天然林, 林分结构, 更新

Abstract: The analysis of this paper shows that different stand structures have different influences on the regeneration of Larix gmelinii in Daxing’anling Mountains in Inner Mongolia. The results indicate:1)comparing to Ledum-Larix forest aged 54~63a and herbage-Larix forest aged 36~48a, the average regeneration density of herbage-Larix forest aged 56~65a reaches to 1 363 trees/ha,which is higher than the fomerby 12.8% and the latter 36.5%;2) When other circumstances are similar, with the increase of stand age and density, herbage-Larix forest aged 36~65a with density of 315~3 263trees/hm2 and Ledum-Larix forest aged 54~63a with density of 865~2 241trees/hm2 show increasing trend of stand regeneration. And regeneration density increases with increasing of the number of decay level of dead tree and the extent of their decay. However, the regeneration density dropped with the increasing of coverage of herbage and shrub.3)Different distribution pattern has different stand regeneration. The average regeneration density of clustered distribution, random distribution and even distribution are 1 415trees/ha,1 165trees/ha and 118trees/ha respectively.

Key words: Larix gmelinii, natural forest, stand structure, regeneration

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