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Streamflow variability for the Aksu River on the southern slopes of the Tien Shan inferred from tree ring records

Published online by Cambridge University Press:  20 January 2017

Ruibo Zhang ,
Yujiang Yuan ,
Xiaohua Gou ,
Qing Yang ,
Wenshou Wei ,
Shulong Yu ,
Tongwen Zhang ,
Huaming Shang ,
Feng Chen  and
Ziang Fan
...Show all authors
Ruibo Zhang*
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
Yujiang Yuan
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Xiaohua Gou
Affiliation:
Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
Qing Yang
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Wenshou Wei
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Shulong Yu
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Tongwen Zhang
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Huaming Shang
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Feng Chen
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Ziang Fan
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
Li Qin
Affiliation:
Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China
*
⁎Corresponding author. Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uygur Autonomous Region, Urumqi 830002, China. E-mail address:[email protected] (R. Zhang).
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Abstract

Gauged river flow records from China generally span only a few decades, which hampers the detection of long-term, decadal- to centennial-scale cycles and trends in streamflow variability. New and updated tree-ring chronologies help reconstructed the water-year (October–September) streamflow for the Aksu River, which is an important river at the edge of the Taklimakan Desert that drains into the Tarim Basin. The reconstruction dates back to 1692 and has an adjusted r2 of 0.61 (1957–2006). Based on frequency, intensity and duration of droughts and pluvial events, the lowest streamflows occurred in the 1920s. Since then streamflow has continuously increased, and was exceptionally rapidly after the 1960s, until today. The start and end of the 20th century to the present were the highest streamflow periods. The mid-20th century was the longest and driest period over the past 300 yr. The reconstructed streamflow series has a strong positive correlation with the North Atlantic Oscillation Index. Changes in mid-latitude circulation patterns influencing precipitation may have indirectly resulted in streamflow variations along the Aksu River over the past 300 yr. The rapid increase and the exceptional streamflows of the 1960s are likely linked with global warming and mid-latitude atmospheric circulation changes.

Keywords

Southern slope of Tien ShanAksu RiverTree ringsStreamflow
Type
Original Articles
Information
Quaternary Research , Volume 85 , Issue 3 , May 2016 , pp. 371 - 379
Copyright
University of Washington

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