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密度调整对太岳山华北落叶松人工林冠层结构及林下植被的影响

田平 韩海荣 康峰峰 程小琴 朱江 周文嵩

田平, 韩海荣, 康峰峰, 程小琴, 朱江, 周文嵩. 密度调整对太岳山华北落叶松人工林冠层结构及林下植被的影响[J]. 北京林业大学学报, 2016, 38(8): 45-53. doi: 10.13332/j.1000-1522.20160018
引用本文: 田平, 韩海荣, 康峰峰, 程小琴, 朱江, 周文嵩. 密度调整对太岳山华北落叶松人工林冠层结构及林下植被的影响[J]. 北京林业大学学报, 2016, 38(8): 45-53. doi: 10.13332/j.1000-1522.20160018
TIAN Ping, HAN Hai-rong, KANG Feng-feng, CHENG Xiao-qin, ZHU Jiang, ZHOU Wen-song.. Influence of density adjustment on canopy structure and understory vegetation of the Larix principis-rupprechtii plantation in Taiyue Mountain, Shanxi, China.[J]. Journal of Beijing Forestry University, 2016, 38(8): 45-53. doi: 10.13332/j.1000-1522.20160018
Citation: TIAN Ping, HAN Hai-rong, KANG Feng-feng, CHENG Xiao-qin, ZHU Jiang, ZHOU Wen-song.. Influence of density adjustment on canopy structure and understory vegetation of the Larix principis-rupprechtii plantation in Taiyue Mountain, Shanxi, China.[J]. Journal of Beijing Forestry University, 2016, 38(8): 45-53. doi: 10.13332/j.1000-1522.20160018

密度调整对太岳山华北落叶松人工林冠层结构及林下植被的影响

doi: 10.13332/j.1000-1522.20160018
基金项目: 

林业公益性行业科研专项(201404213)。

详细信息
    作者简介:

    田平。主要研究方向:生态系统管理与规划。Email:tian_ping@bjfu.edu.cn地址:100083北京市海淀区清华东路35号北京林业大学林学院。责任作者:程小琴,博士,讲师。主要研究方向:生态系统管理与规划。Email:cxq_200074@163.com地址:同上。

    田平。主要研究方向:生态系统管理与规划。Email:tian_ping@bjfu.edu.cn地址:100083北京市海淀区清华东路35号北京林业大学林学院。责任作者:程小琴,博士,讲师。主要研究方向:生态系统管理与规划。Email:cxq_200074@163.com地址:同上。

Influence of density adjustment on canopy structure and understory vegetation of the Larix principis-rupprechtii plantation in Taiyue Mountain, Shanxi, China.

  • 摘要: 华北落叶松人工林是太岳山主要的公益林,由于林分密度普遍偏大,林下植被稀疏,林分质量较差。密度调整对于提高人工林质量,增加林下植物物种多样性,维持生态系统功能具有重要意义。本研究在山西太岳山好地方林场典型地段35年生华北落叶松人工林中设置4种密度调整强度(对照处理、20%、30%和50%),研究华北落叶松人工林的冠层结构、光环境特征和林下植被分布对密度调整的响应。结果表明:1)密度调整显著改变了华北落叶松人工林的冠层结构,改善了林下光环境,增加了冠层结构的空间异质性。与对照处理相比,密度调整强度为20%、30%、50%的林分叶面积指数(LAI)分别下降了18.25%、25.76%、37.50%;林分开度分别增加了17.45%、25.37%、42.81%。密度调整强度为20%、30%、50%的林分林下总辐射分别为对照处理的1.3、1.4和2.1倍。2)密度调整改变了林下群落结构,增加了林下植物的种类和数量以及林下植物物种多样性。密度调整强度为30%的林分物种多样性最高,林下群落结构最复杂。3)相关性分析和CCA排序结果显示,冠层结构与林下物种多样性呈显著相关,能够较好地解释林下物种分布的变化,其中,LAI是引起华北落叶松人工林草本层物种组成变化的主要因子,与草本层物种多样性呈显著负相关关系。

     

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  • 收稿日期:  2016-01-15
  • 刊出日期:  2016-08-31

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