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应用生态学报 ›› 2021, Vol. 32 ›› Issue (2): 503-512.doi: 10.13287/j.1001-9332.202102.027

• 研究论文 • 上一篇    下一篇

不同树高处树轮密度变化特征及其对气候的响应

刘可祥1, 张同文1*, 张瑞波1, 喻树龙1, 黄力平2, 姜盛夏1, 胡东宇2   

  1. 1中国气象局乌鲁木齐沙漠气象研究所, 中国气象局树木年轮理化研究重点实验室, 新疆树木年轮生态实验室, 乌鲁木齐 830002;
    2新疆林业科学院现代林业研究所, 乌鲁木齐 830000
  • 收稿日期:2020-07-23 接受日期:2020-11-06 出版日期:2021-02-15 发布日期:2021-08-15
  • 通讯作者: *E-mail: zhangtw@idm.cn
  • 作者简介:刘可祥, 男, 1992年生, 研究实习员。主要从事树木年轮气候学研究。E-mail: liukx@idm.cn
  • 基金资助:
    新疆维吾尔自治区重点实验室开放课题(2018D04028)、国家自然科学基金项目(41975095,U1803245)、天山青年计划-杰出青年科技人才项目(2019Q007)和公益性科研院所基本科研业务费专项资金项目(IDM201202,IDM2018004)资助

Characteristics of tree-ring density at different stem heights and their climatic responses.

LIU Ke-xiang1, ZHANG Tong-wen1*, ZHANG Rui-bo1, YU Shu-long1, HUANG Li-ping2, JIANG Sheng-xia1, HU Dong-yu2   

  1. 1Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uigur Autonomous Region, Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China;
    2Institute of Modern Forestry, Xinjiang Academy of Forestry Science, Urumqi 830000, China
  • Received:2020-07-23 Accepted:2020-11-06 Online:2021-02-15 Published:2021-08-15
  • Contact: *E-mail: zhangtw@idm.cn
  • Supported by:
    Key Laboratory Opening Subject of Xinjiang Uigur Autonomous Region (2018D04028), the National Natural Science Foundation of China (41975095,U1803245), the Tianshan Youth Project of Xinjiang Uigur Autonomous Region-Outstanding Young Talent (2019Q007), and the Basal Research Fund of Central Public Interest Scientific Institution (IDM201202, IDM2018004)

摘要: 以伊犁南部山区雪岭云杉风倒木为对象,研究了1.3、5、10、15、20 m树高处树轮圆盘样品的最大密度、最小密度、早材平均密度、晚材平均密度4种树轮密度年表,结合当地气象观测资料进行相关分析,研究树干不同高度树轮密度对气候要素的响应特征。结果表明: 同一树高下4种密度参数在整体上表现出较高的相关性,其中10、15、20 m树高相对显著;不同树高处晚材平均密度的一致性相对较好;不同树高处树轮密度对气候要素的响应存在差异,15 m树高处最大密度、晚材平均密度对上年7—9月、当年5—9月平均气温具有较好的响应。因此,在1.3 m处采集雪岭云杉样本存在对气温响应估计偏低的可能。

关键词: 树轮密度, 树高, 气候要素, 雪岭云杉, 天山

Abstract: Taking windfall woods of Picea schrenkiana in the southern mountainous area of the Ili Prefecture as the research object, tree-ring density chronologies were developed from the discs for maximum density (MXD), minimum density (MID), mean earlywood density (EWD), and mean latewood density (LWD) at five different stem heights (1.3, 5, 10, 15 and 20 m) to examine the climatic responses of tree-ring density by correlation analysis with local meteorological data. The results showed that there was a good coherence among the four types of tree-ring density chronologies for the same stem height, which was relatively significant for the data from 10, 15 and 20 m. The LWD had good coherence among different stem heights, while the climatic responses of tree-ring density at different stem heights varied. The MXD and LWD at 15 m were sensitive to mean tempera-ture from July to September in the previous year and from May to September in the current year. It might underestimate the response of P. schrenkiana to temperature if we sample tree-ring at 1.3 m.

Key words: tree-ring density, stem height, climatic element, Picea schrenkiana, Tianshan Mountains