地理科学进展 ›› 2016, Vol. 35 ›› Issue (11): 1397-1410.doi: 10.18306/dlkxjz.2016.11.010

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中国利用树轮资料重建干湿变化研究进展

王亚军(), 李明启*()   

  1. 中国科学院地理科学与资源研究所,中国科学院陆地表层格局与模拟重点实验室,北京 100101
  • 出版日期:2016-11-25 发布日期:2016-11-25
  • 通讯作者: 李明启 E-mail:hbyjwang@163.com;limq@igsnrr.ac.cn
  • 作者简介:

    作者简介:王亚军(1973-),女,辽宁凌源人,博士后,主要从事气候变化与树轮气候学研究,E-mail:hbyjwang@163.com

  • 基金资助:
    国家自然科学基金重点项目(41430528)

Research progress of dry-wet climate reconstruction by tree ring in China

Yajun WANG(), Mingqi LI*()   

  1. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences andNatural Resources Research, CAS, Beijing 100101, China
  • Online:2016-11-25 Published:2016-11-25
  • Contact: Mingqi LI E-mail:hbyjwang@163.com;limq@igsnrr.ac.cn
  • Supported by:
    Key Program of National Natural Science Foundation of China, No.41430528

摘要:

树木年轮资料定年准确、分辨率高、连续性强,已成为研究过去全球变化的重要信息来源之一。中国树轮与干湿变化研究,样点分布广泛,研究树种较多,重建尺度较长。基于树轮宽度、密度和同位素等各种代用指标,在分析树木径向生长对干湿变化响应、重建历史时期干湿变化等方面取得很大进展。一般来说,在干旱半干旱区的低海拔区域,水分条件,尤其是春季、秋季和年湿润状况,是树木径向生长的重要影响因素。森林上限、相对冷湿区域以及亚热带气候区,树木生长与降水的相关性偏弱。在时间尺度上,基于树轮重建的长于1000年甚至超过2000年的干湿变化序列已有多条,主要分布在青藏高原地区。目前最长年表已达4500年,最长降水序列为3500年。本文通过对部分树轮成果的简要概括,以期为树轮采样和干湿变化重建提供借鉴与帮助。

关键词: 树木年轮, 代用指标, 响应, 干湿变化, 气候重建, 研究进展, 中国

Abstract:

With accurate dating, high resolution, and high continuity, tree-ring data become one of the important sources for reconstructing the climate change. The sampling sites distribute widely, many tree species were selected, and the chronologies are very long for studying the relationship of the tree ring and dry-wet changes in China. Significant progress has been made in analyzing the response of tree radial growth to dry-wet changes and reconstructing historical dry-wet climate change based on various research proxies, such as tree-ring width, density, and stable isotopes. In general, moisture condition, especially in the spring and autumn and annual humidity are the important influencing factors of tree-radial growth in low altitudes of arid and semi-arid areas. For trees in the upper limit of forest vegetation, relatively cold-wet areas, and the subtropical climate zone in China, the correlation between tree growth and precipitation was weak. Dry-wet climate reconstruction based on tree-ring data in China is plentiful. Up to now, many precipitation series of more than 1000a or even over 2000a were reconstructed in a large number of regions. The longest tree-ring chronology is 4500a, and the longest precipitation reconstruction sequence is 3500a. The brief summary of selected tree-ring results in this article will provide references and help for tree-ring sampling and dry-wet climate reconstruction.

Key words: tree ring, indicator, response, dry-wet change, paleoclimatic reconstruction, research progress, China