| 太岳山油松人工林冠下光环境特征与冠层结构 |
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| 引用本文： | 张彦雷,康峰峰,韩海荣,尹学哲,程小琴,李勇,周彬,刘可,孙敬军.太岳山油松人工林冠下光环境特征与冠层结构[J].南京林业大学学报(自然科学版),2014,57(2):169. |
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| 作者姓名： | 张彦雷 康峰峰 韩海荣 尹学哲 程小琴 李勇 周彬 刘可 孙敬军 |
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| 作者单位： | 1.北京林业大学林学院,省部共建森林培育与保护教育部重点实验室,北京 100083;
2.山西太岳山国有林管理局马泉林场,山西 沁源 046500 |
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| 基金项目： | 收稿日期:2013-05-31 修回日期:2013-10-16
基金项目:国家林业局“948”项目(2010-4-15); 国家林业公益性行业科研专项项目(201104008)
第一作者:张彦雷,硕士生。*通信作者:韩海荣,教授。E-mail: hanhr@bjfu.edu.cn。
引文格式:张彦雷,康峰峰,韩海荣,等. 太岳山油松人工林冠下光环境特征与冠层结构[J]. 南京林业大学学报:自然科学版,2014,38(2):169-174. |
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| 摘 要： | 为了揭示林分冠层结构和林内光环境特征的关系,利用冠层分析仪(WinScanopy)对比分析了山西省太岳山马泉林场油松人工林(幼龄林和中龄林)冠层结构及林分光环境特征。结果表明:在林分密度逐步增大情况下,林分开度呈现下降趋势,总体分布范围为9.68%～16.20%; 叶面积指数随林分密度的增大相应增加,总体分布范围为2.000～3.784。林分冠上总辐射分布范围为25.37～29.10 MJ/(m2·d),林下总辐射为4.22～11.07 MJ/(m2·d)。林下总辐射随林分密度的增大而降低,表明林分对光辐射的截获能力随之增强。幼龄林消光系数为0.27,中龄林消光系数为0.59,中龄林林分消光能力大于幼龄林林分。林下直射是林下总辐射的主要组成部分。
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Measurement and analysis on understory light environment and canopy structure
of Pinus tabulaeformis plantation in the Taiyue Mountain |
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| Abstract: | In this paper, the understory light characters were measured and analyzed in Pinus tabulaeformis plantation(juvenile and mid-aged stands)with WinScanopy instrument in Mt. Taiyue, Shanxi province, China. The relationship between canopy structure and light characters were also analyzed. The results indicated that stand openness(9.68%-16.20%)decreased, whereas the LAI in the stand(2.000-3.784)increased with stand density increasing. The total PPFD above canopy ranged from 25.37 to 29.10 MJ/(m2·d)in P. tabulaeformis plantation. And the total PPFD under canopy deceased with the stand density ranged from 4.22 to 11.07 MJ/(m2·d). The light extinction ratio enlarged with the stand density increasing. And the light extinction coefficient of mid-aged stand(0.59)was stronger than that in the juvenile stand(0.27). The direct PPFD was the main component of total PPFD under canopy. |
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