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Precipitation Variations in the Central Qilian Mountains since the 7th Century and Regional Differences: Evidence from Tree-Ring Data

文献类型：期刊论文

作者Zhang, Taibang2,3; Zhang, Yong3; Shao, Xuemei2,3; Fang, Xiuqi1
刊名FORESTS
出版日期2024-04-01
卷号15期号:4页码:14
关键词tree ring precipitation regional differences the Qilian Mountains Qilian juniper (Juniperus przewalskii Kom.)
DOI10.3390/f15040624
英文摘要The Qilian Mountains, located in northwest China and serving as a crucial water recharge area, have exhibited significant regional differences in precipitation patterns in recent decades. However, the limited temporal coverage of instrumental data has hindered a deep understanding of hydroclimate variations and regional differences. Further investigation into their long-term spatial and temporal precipitation characteristics is urgently needed. In this study, a new tree-ring-width chronology spanning 1743 years was established in the central Qilian Mountains using Qilian juniper (Juniperus przewalskii Kom.) samples. Significant correlations were found between the tree-ring indices and precipitation during both the growing and pre-growing seasons. Based on these correlations, annual precipitation from August of the previous year to July of the current year was reconstructed. The reconstruction model successfully explains 34.5% of the variation in precipitation during the calibration period. The analysis of the reconstructed series reveals notable interannual to multi-decadal dry-wet variability during the period from 614 AD to 2016 AD. The mid- to late-15th century emerges as the longest-lasting dry period, while the last decade stands out as the wettest. Comparative analysis with other precipitation reconstructions in the eastern and western Qilian Mountains reveals that regional drought events tend to be more pronounced and enduring. Low-frequency fluctuations on decadal to century scales show distinct wet and dry periods in the 12th-18th centuries in both the eastern and western parts of the Qilian Mountains, with weaker fluctuations in subsequent centuries. However, the central part of the Qilian Mountains exhibits opposite trends, possibly due to the complex interactions of multiple circulation systems.
WOS关键词TIBETAN PLATEAU ; CLIMATE VARIABILITY ; HEXI CORRIDOR ; RECONSTRUCTION ; RECORD ; CHINA ; RIVER ; MTS.
资助项目National Key R&D Program of China
WOS研究方向Forestry
语种英语
WOS记录号WOS:001211164000001
出版者MDPI
资助机构National Key R&D Program of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/204850]  
专题陆地表层格局与模拟院重点实验室_外文论文
通讯作者Zhang, Yong
作者单位1.Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Taibang,Zhang, Yong,Shao, Xuemei,et al. Precipitation Variations in the Central Qilian Mountains since the 7th Century and Regional Differences: Evidence from Tree-Ring Data[J]. FORESTS,2024,15(4):14.
APA Zhang, Taibang,Zhang, Yong,Shao, Xuemei,&Fang, Xiuqi.(2024).Precipitation Variations in the Central Qilian Mountains since the 7th Century and Regional Differences: Evidence from Tree-Ring Data.FORESTS,15(4),14.
MLA Zhang, Taibang,et al."Precipitation Variations in the Central Qilian Mountains since the 7th Century and Regional Differences: Evidence from Tree-Ring Data".FORESTS 15.4(2024):14.

入库方式： OAI收割

来源：地理科学与资源研究所

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