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林业科学 ›› 2013, Vol. 49 ›› Issue (6): 1-9.doi: 10.11707/j.1001-7488.20130601

• 论文与研究报告 • 上一篇    下一篇

樟子松树轮δ13C对气候因子响应的方位差异

商志远1, 王建1, 赵兴云2,3, 张茂恒1, 崔明星4, 陈振举5,6   

  1. 1. 南京师范大学地理科学学院 南京 210023;
    2. 山东省水土保持与环境保育重点实验室 临沂 276000;
    3. 临沂大学资源环境学院 临沂 276000;
    4. 中国科学院东北地理与农业生态研究所 长春 130102;
    5. 沈阳农业大学林学院 沈阳 110866;
    6. 中国科学院沈阳应用生态研究所 沈阳 110164
  • 收稿日期:2012-05-02 修回日期:2013-05-07 出版日期:2013-06-25 发布日期:2013-07-16
  • 基金资助:

    国家自然科学基金项目(41271204,41072139,40972112); 江苏高校优势学科建设工程项目(PAPD)。

Orientation Difference of Tree Ring δ13C Response to Climatic Factors for Pinus sylvestris var. mongolica

Shang Zhiyuan1, Wang Jian1, Zhao Xingyun2,3, Zhang Maoheng1, Cui Mingxing4, Chen Zhenju5,6   

  1. 1. College of Geographical Science, Nanjing Normal University Nanjing 210023;
    2. Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protections Linyi 276000;
    3. College of Resources and Environment, Linyi University Linyi 276000;
    4. China Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences Changchun 130102;
    5. Forestry College, Shenyang Agricultural University Shenyang 110866;
    6. Institute of Applied Ecology, Chinese Academy of Sciences Shenyang 110164
  • Received:2012-05-02 Revised:2013-05-07 Online:2013-06-25 Published:2013-07-16

摘要:

对大兴安岭北部3株樟子松树轮进行δ13C测定,分析树轮δ13C对气候因子响应的方位差异以及不同采样方位数和方位组合方式对整轮代表性的差异。结果表明: 樟子松树轮不同方位δ13C的均值序列对大区域气候环境因子的响应是一致的; 树轮不同方位的δ13C序列多数呈正相关,少量呈负相关,其中相关系数达到显著性水平的序列多数呈对称分布; 树轮不同方位δ13C序列提取气候因子的能力和程度存在较大差异; 当无法整轮周向取样时,选取3~4个方位采样既经济高效又能较完整地提取样本的δ13C变化信息; 在方位组合上,应尽量避免各孔向间呈180°夹角。

关键词: 树轮, δ13C, 方位差异, 气候要素, 响应, 樟子松

Abstract:

Through investigation of the stable carbon isotope ratio (δ13C) of discs which were sampled from three 15-year-old trees in the north part of Daxing'anling Mountain, we analyzed the orientation variation in tree ring δ13C in response to climate factors and influence of sampling orientations and the sample combinations on the circumferential representative. The result showed that the impact of regional climate and environment factors on the variation in tree ring δ13C was consistent. It was found that most of the correlations between the tree ring δ13C sequences were positive, but some were negative. The sequences with significant correlation usually exhibited symmetrical or obtuse-angled distribution. The capability and extent of tree ring δ13C extracting the climate factors varied obviously among different orientations which accounted for the responses of different orientations to climate factors. The result suggests that 3 orientations provide the best and most efficient choice for extracting the information of tree ring δ13C. Sampling should avoid boring in one direction only, but should also include transversal angles.

Key words: tree rings, δ13C, orientation difference, climatic factors, response, Pinus sylvestris var. mongolica

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