基于树木年轮学的古树树龄估算——以敦煌市香水梨为例

doi:10.13287/j.1001-9332.202110.014

应用生态学报 ›› 2021, Vol. 32 ›› Issue (10): 3699-3706.doi: 10.13287/j.1001-9332.202110.014

基于树木年轮学的古树树龄估算——以敦煌市香水梨为例

秦春¹, 夏生福², 秦占义², 王晓锋¹, 杨柳¹, 杨保^1,3*

¹中国科学院西北生态环境资源研究院, 沙漠与沙漠化重点实验室, 兰州 730000;
²敦煌市自然资源局, 甘肃敦煌 736200;
³中国科学院青藏高原地球科学卓越创新中心, 北京 100101

收稿日期:2021-04-14 修回日期:2021-07-23 出版日期:2021-10-15 发布日期:2022-04-15
通讯作者: * E-mail: yangbao@lzb.ac.cn
作者简介:秦春, 男, 1981年生, 博士, 高级工程师。主要从事树轮气候学、树轮生态学研究。E-mail: qinchun@lzb.ac.cn
基金资助:
中国科学院沙漠与沙漠化重点实验室开放课题项目(KLDD-2021-001)和中国科学院西北生态环境资源研究院自主部署项目(E055020101,Y951971001)资助

Age estimation of ancient trees based on dendrochronology: A case study of Pyrus ussuriensis in Dunhuang City, China

QIN Chun¹, XIA Sheng-fu², QIN Zhan-yi², WANG Xiao-feng¹, YANG Liu¹, YANG Bao^1,3*

¹Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
²Natural Resources Bureau of Dunhuang, Dunhuang 736200, Gansu, China;
³Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100101, China

Received:2021-04-14 Revised:2021-07-23 Online:2021-10-15 Published:2022-04-15
Contact: * E-mail: yangbao@lzb.ac.cn
Supported by:
Opening Foundation of Key Laboratory of Desert and Desertification, Chinese Academy of Sciences (KLDD-2021-001) and the Autonomous Deployment Project of Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences (E055020101, Y951971001).

摘要/Abstract

摘要： 树龄是古树鉴定的唯一标准。本研究采用树轮年代学方法调查敦煌市莫高镇窦家墩村四组(原杨家园子)梨园中最老的香水梨树的树龄。因老梨树均腐朽中空,调查同时采集不同树龄的香水梨树样芯,建立树木径向生长生理年龄曲线,据此估算缺失段的树轮数。结合准确树轮计数,复原香水梨树树龄。结果表明: 梨园13棵老香水梨树的平均树龄为(280±35)年。由此证明,《敦煌志》中记载的古梨树是真实存在的。按树龄来说,该批梨树至少为三级古树,应妥善保护。本研究为解决敦煌市古梨园存留争议提供了详实的科学依据。

关键词: 香水梨, 古树, 树龄鉴定

Abstract: Age is the sole criterion for identifying ancient trees. Dendrochronology was used to examine the age of the old trees of Pyrus ussuriensis in the Fourth group of Doujiadun Village (formerly Yangjiayuanzi), Mogao Town, Dunhuang City. As all the old pear trees had been decayed and hollow, we collected cores of P. ussuriensis of different ages to establish the age-related curve of tree radial growth, and estimated the number of tree rings in the missing segment. Combined with accurate count on tree rings, the age of P. ussuriensis was restored. The results showed that the average age of the 13 old pear trees in the orchard was (280±35) years, presenting further evidence for the record about old pear trees in Dunhuang Zhi. These old trees could be classified as the third-class ancient tree according to tree age, and should be properly protected and preserved. This study provided a detailed scientific basis to resolve the dispute over the conservation of ancient P. ussuriensis in Dunhuang City.

Key words: Pyrus ussuriensis, ancient tree, tree age identification

秦春, 夏生福, 秦占义, 王晓锋, 杨柳, 杨保. 基于树木年轮学的古树树龄估算——以敦煌市香水梨为例[J]. 应用生态学报, 2021, 32(10): 3699-3706.

QIN Chun, XIA Sheng-fu, QIN Zhan-yi, WANG Xiao-feng, YANG Liu, YANG Bao. Age estimation of ancient trees based on dendrochronology: A case study of Pyrus ussuriensis in Dunhuang City, China[J]. Chinese Journal of Applied Ecology, 2021, 32(10): 3699-3706.

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基于树木年轮学的古树树龄估算——以敦煌市香水梨为例

Age estimation of ancient trees based on dendrochronology: A case study of Pyrus ussuriensis in Dunhuang City, China

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