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应用生态学报 ›› 2019, Vol. 30 ›› Issue (3): 805-813.doi: 10.13287/j.1001-9332.201903.003

• 研究论文 • 上一篇    下一篇

亚洲树轮平均敏感度分布特征及其影响因素

郑壮鹏1,2, 赵思媛3, 周非飞1,2, 和金福4, 胡善斌4, 董志鹏1,2, 陈诗音1,2, 方克艳1,2*   

  1. 1福建师范大学地理科学学院, 福州 350007;
    2湿润亚热带山地生态国家重点实验室培育基地, 福州 350007;
    3国家林业局调查规划设计院, 北京 100714;
    4云南省云岭省级自然保护区管护局, 云南怒江 673100
  • 收稿日期:2018-09-14 出版日期:2019-03-20 发布日期:2019-03-20
  • 通讯作者: E-mail: kfang@fjnu.edu.cn
  • 作者简介:郑壮鹏,男,1992年生,硕士研究生. 主要从事树轮生态学研究. E-mail: 1026561623@qq.com
  • 基金资助:
    本文由中国科学院战略性先导科技专项项目(XDB26020000)、国家优秀青年基金项目(41822101)、中组部万人计划“青年拔尖人才”项目、福建省特支计划“青年拔尖创新人才计划”项目(2015R1101029-8)和福建师范大学校创新团队项目(IRTL1705)资助

Variations of mean sensitivity of tree rings in Asia and their influencing factors

ZHENG Zhuang-peng1,2, ZHAO Si-yuan3, ZHOU Fei-fei1,2, HE Jin-fu4, HU Shan-bin4, DONG Zhi-peng1,2, CHEN Shi-yin1,2, FANG Ke-yan1,2*   

  1. 1College of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;
    2Cultuvation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China;
    3Academy of Forest Inventory and Planning, State Fore-stry Administration, Beijing 100714, China;
    4Management and Protection Bureau of Yunnan Yunlin Provincial Nature Reserve, Nujiang 673100, Yunnan, China
  • Received:2018-09-14 Online:2019-03-20 Published:2019-03-20
  • Supported by:
    This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB26020000), the Excellent Youth Fund of the National Science Foundation of China (41822101), the National Youth Talent Support Program of China (Ten Thousand People Plan), the Youth Talent Support Program of the Non-profit Project of Fujian Province (2015R1101029-8), and the Innovation Team Project of Fujian Normal University (IRTL1705).

摘要: 树轮敏感度是指示树轮对气候变化敏感程度的重要统计参数,研究大尺度树木敏感度的分布特征及其影响因素有助于理解树木生长和气候的相互关系.本文使用来自国际树轮库(ITRDB)的573条树轮宽度记录,研究亚洲树轮敏感度的分布特征及可能的影响因素.结果表明: 在干旱地区和温度较低的区域,树木的平均敏感度更高,降水对敏感度的影响强于温度.平均敏感度随海拔的上升表现出下降-上升-下降的波动变化.这种波动与降水随着海拔表现的上升-下降-上升的变化相吻合,说明海拔变化导致的降水改变可能是导致平均敏感度变化的重要因素之一.不同树种生理性状的差异导致其敏感度差异较大,祁连圆柏、西藏白皮松等阳生树种由于耐旱性而具有更高的敏感度,而阴生树种如云杉属和冷杉属则敏感度较低;老龄树可能具有更高的敏感度.

关键词: 树轮, 敏感度, 海拔, 阳生树种, 阴生树种

Abstract: Mean sensitivity (MS) of tree ring is a key index representing the sensitivity of tree rings to climate. Understanding the variation of MS and its influencing factors at a large area is helpful to understand the interaction between tree growth and climate. We used 573 tree-ring width chronologies in Asia from the International Tree Ring Date Bank (ITRDB) to examine the variation of tree-ring sensitivity and potential influencing factors. The results showed that the MS of trees was high in the arid regions and cold regions. Precipitation was more important than temperature in diriving MS. Consistent with the pattern of up-down-up for precipitation, MS showed a down-up-down fluctuation with increasing altitude, indicating that precipitation affected by altitude was a key climate factor for the MS. MS had great difference due to different physiological traits among tree species. Light-adapted species, such as Juniperus przewalskii and Pinus gerardiana, had high MS due to drought tole-rance. Shade-adapted species, such as Picea and Abies, had low MS. Old trees may have high MS.

Key words: sensitivity, altitude, sun-adapted species, shade-adapted species, tree ring