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Tree ring based streamflow reconstruction for the Upper Yellow River over the past 1234 years

ISSN号：1001-6538
期刊名称：科学通报(英文版)
时间：0
页码：4179-4186
语言：中文
分类：P338[天文地球—水文科学;水利工程—水文学及水资源;天文地球—地球物理学] S157.1[农业科学—土壤学;农业科学—农业基础科学]
作者机构：[1]Key Laboratory of Western China's Environmental Systems (MOE), Lanzhou University, Lanzhou 730000, China, [2]State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
相关基金：This work was supported by the National Natural Science Foundation of China （40671191）, the National Natural Science Foundation of China Innovation Team Project （40721061）, the Major Program of the National Natural Science Foundation of China （40890051）, the One Hundred Talents Program of Chinese Academy of Sciences （290827Bll） and the Program of lntroducing Talents of Discipline to Universities from the Chinese Ministry of Education （B06026）.
相关项目：青藏高原和中东亚干旱区环境变化与地表过程研究

作者： Deng Yang|Gou Xiaohua|Chen Fahu|

关键词：黄河上游, 径流量, 树木年轮, 干旱现象, 阿尼玛卿山, 低流量, 年轮宽度, 普氏原羚, streamflow, tree ring, Yellow River, A＇nyemaqen Mountain

中文摘要：

我们建立了一张 Juniperus przewalski 树戒指宽度年表，基于从任何东西收集的树戒指核心

英文摘要：

We established a Juniperus przewalski tree ring width chronology, based on tree ring cores collected from the A＇nyemaqen Mountains. Statistical analysis showed that the chronology was highly correlated with instrumental streamflow records from previous August to current July from the Tangnaihai Station in the upper reaches of the Yellow River, with a correlation coefficient of 0.656. Streamflow for the upper reaches of the Yellow River was reconstructed for the past 1234 years. Low flow periods for the 11-year averaged streamflow reconstruction were definite as lower than mean plus 1 standard deviation, and high flow periods were higher than mean minus 1 standard deviation. Over the past 1234 years, high flows occurred 18 times, and low flows occurred 12 times. The main low flow periods were identified as AD 1140-1156, AD 1295-1309, AD 1473-1500, and AD 1820-1847, and the main high flow periods were identified as AD 846-873, and AD 1375-1400. Extremely low streamflow over the reconstruction period was seen during the late 15th century, coinciding with a widespread drought phenomenon, which took place in the northeastem Tibetan Plateau over the same period. Reconstructed streamflow shows significant low-frequency variability, which is in line with drought variability of neighboring regions, as inferred from tree rings and other proxies. Multi-taper spectral analysis suggests the existence of significant periods of 2-5, 22, 35-38, 55--62, and 114-227 years, particularly significant for cyclic variations of years 159 and 36.