Moisture changes over the past 467 years in the central Hexi Corridor, northwestern China
文献类型：期刊论文
| 作者 | Qie, Jiazhi2,3; Tian, Qinhua1; Zhang, Yong2 |
| 刊名 | DENDROCHRONOLOGIA
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 63页码:8 |
| ISSN号 | 1125-7865 |
| 关键词 | Hexi Corridor Qilian juniper Tree-ring width Dry-wet reconstruction |
| DOI | 10.1016/j.dendro.2020.125725 |
| 通讯作者 | Zhang, Yong(zhangyong@igsnrr.ac.cn) |
| 英文摘要 | The long-term characteristics of precipitation in arid and semi-arid areas are of great interest because these areas are very sensitive to climate change and human activities. The Hexi Corridor is an arid and semi-arid region in northwestern China that also is an important sector of the Silk Road Economic Belt; despite the region's dependence on precipitation, annually resolved, long-term moisture records are still lacking for this region. Here, a standard tree-ring width chronology spanning 1484-2015 AD is developed for the Hexi Corridor using Qilian juniper (S. przewalskii Kom.). The chronology is used to reconstruct moisture changes in the region over the past 467 years. Correlation analyses indicate that the tree-ring width index has a significant positive correlation with the June SPEI (standardized precipitation evapotranspiration index) on a twelve-month time scale (r = 0.73, n = 65, p < 0.001). We used this information to build a transfer function that explains 52.5% of the variance in the SPEI reconstructed for the period from 1549 CE to 2015 CE. Our study area experienced clear alternations between dry and wet periods. Especially long wet periods include 1600-1650 AD and 1762-1804 AD; long dry periods include 1670-1693 AD, 1917-1970 AD, and 1990-2015 AD. The 1920s was the most severe period of drought in the last 467 years. The results of wavelet analysis and running correlation analysis indicate that the atmospheric circulation system experienced a notable shift around the 1800s, after which point the role of the westerly system grew more pronounced. |
| WOS关键词 | RING-BASED RECONSTRUCTION ; ANNUAL PRECIPITATION ; CLIMATE VARIABILITY ; QILIAN MOUNTAINS ; TIBETAN PLATEAU ; INNER-MONGOLIA ; DROUGHT ; DENDROCLIMATOLOGY ; RUNOFF ; RECORD |
| 资助项目 | National Natural Science Foundation[41630529] ; National Natural Science Foundation[41471087] ; National Key R&D Program of China[2017YFA0603302] ; National Key R&D Program of China[2018YFA0605601] |
| WOS研究方向 | Forestry ; Physical Geography |
| 语种 | 英语 |
| 出版者 | ELSEVIER GMBH |
| WOS记录号 | WOS:000579857600010 |
| 资助机构 | National Natural Science Foundation ; National Key R&D Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/157107]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Yong |
| 作者单位 | 1.China Meteorol Adm, Lab Climate Studies, Natl Climate Ctr, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qie, Jiazhi,Tian, Qinhua,Zhang, Yong. Moisture changes over the past 467 years in the central Hexi Corridor, northwestern China[J]. DENDROCHRONOLOGIA,2020,63:8. |
| APA | Qie, Jiazhi,Tian, Qinhua,&Zhang, Yong.(2020).Moisture changes over the past 467 years in the central Hexi Corridor, northwestern China.DENDROCHRONOLOGIA,63,8. |
| MLA | Qie, Jiazhi,et al."Moisture changes over the past 467 years in the central Hexi Corridor, northwestern China".DENDROCHRONOLOGIA 63(2020):8. |
入库方式： OAI收割
来源：地理科学与资源研究所
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