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中国沙漠 ›› 2026, Vol. 46 ›› Issue (2): 43-52.DOI: 10.7522/j.issn.1000-694X.2025.00118

• • 上一篇    下一篇

基于树轮宽度重建呼伦贝尔沙地过去198 a降水变化

温烁1,2(), 张晓1,2, 刘小粉3, 李瀚之1,2, 乔殿学4, 哈磊4, 穆英林4, 尚晓妍1,2, 周文健1,2, 杨晓晖1,2, 时忠杰1,2()   

  1. 1.中国林业科学研究院生态保护与修复研究所,北京 100091
    2.中国林业科学研究院荒漠化研究所,北京 100091
    3.河北工程大学 园林与生态工程学院,邯郸 056038
    4.内蒙古维纳河自然保护区管理局,内蒙古 鄂温克族自治旗 021100
  • 收稿日期:2025-04-10 修回日期:2025-07-14 出版日期:2026-03-20 发布日期:2026-04-13
  • 通讯作者: 时忠杰
  • 作者简介:温烁(1999—),男,河北人,硕士研究生,研究方向为树轮生态与重建。E-mail: shuowen2022@163.com
  • 基金资助:
    国家重点研发计划政府间科技创新合作项目(2022YFE0127900);中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2023ZA008);国家自然科学基金项目(32071558);内蒙古自治区自然科学基金项目(2023ZD23);呼伦贝尔市科技计划项目(SF2022001)

Tree-ring based precipitation reconstruction over the past 198 years in the Hulunbuir Sandy LandNortheast China

Shuo Wen1,2(), Xiao Zhang1,2, Xiaofen Liu3, Hanzhi Li1,2, Dianxue Qiao4, Lei Ha4, Yinglin Mu4, Xiaoyan Shang1,2, Wenjian Zhou1,2, Xiaohui Yang1,2, Zhongjie Shi1,2()   

  1. 1.Research Institute of Ecological Conservation and Restoration,Chinese Academy of Forestry,Beijing 100091,China
    2.Research Institute of Desertification Studies,Chinese Academy of Forestry,Beijing 100091,China
    3.School of Landscape and Ecological Engineering,Hebei University of Engineering,Handan 056038,Hebei,China
    4.Administration of Weinahe Nature Reserve of Inner Mongolia,Ewenke Autonomous Banner 021100,Inner Mongolia,China
  • Received:2025-04-10 Revised:2025-07-14 Online:2026-03-20 Published:2026-04-13
  • Contact: Zhongjie Shi

摘要:

基于呼伦贝尔沙地樟子松的树轮宽度年表,分析了樟子松径向生长与该地区1952—2018年温度和降水的相关性。结果表明:树轮宽度年表与上一年8月至当年7月的累积降水的相关性最高(r=0.60,P<0.01)。基于此重建了呼伦贝尔沙地过去198 a(1821—2018年)上一年8月至当年7月的降水变化历史。该重建解释了器测时期上一年8月至当年7月降水量35.73%的方差,采用“逐一剔除法”交叉验证和“分段检验法”独立检验表明重建方程可靠稳定。过去198 a降水经历了5个湿润期和5个干旱期。功率谱分析显示,该地区过去198 a的降水存在着5.9~6.0、2.9、2.1 a的变化周期性。与邻近区域重建对比及空间相关性分析表明,本降水重建序列可以较好地代表研究区域的降水变化。

关键词: 树木年轮, 降水重建, 樟子松, 呼伦贝尔沙地, 增强回归树

Abstract:

Based on the ring-width chronology of Pinus sylvestris var. mongholica in the Hulunbuir sandy land, this paper analyzed the correlation between the tree radial growth and the temperature and precipitation during 1952-2018. The results showed that the highest correlation (r=0.60, P<0.01) was found between the ring-width chronology and the precipitation from August of the previous year to July of the current year. And the precipitation history was reconstructed from August of the previous year to July of the current year over the past 198 years (1821-2018) in the Hulunbuir sandy land. The reconstruction equation explained 35.73% of the variance of precipitation from August of the previous year to July of the current year in the instrumental period, and was reliable and stable by the validation using the "leave-one-out cross-validation method" and "segmentation independent test method". The precipitation over the past 198 years had experienced 5 wet-dry transition phases. The multi-taper spectrum analysis showed that the precipitation in this region has a periodicity of 5.9-6.0, 2.9 and 2.1 years over the past 198 years. Comparison with reconstructions from neighboring regions and spatial correlation analysis show that the present precipitation reconstruction sequence can better represent the precipitation changes in the study area.

Key words: tree-ring, precipitation reconstruction, Pinus sylvestris var. mongholica, Hulunbuir Sandy Land, boosted regression trees

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