ISSN: 2157-7617

Journal of Earth Science & Climatic Change
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  • Research Article   
  • J Earth Sci Clim Change,
  • DOI: 10.4172/2157-7617.1000432

Reconstructed Precipitation for the Eastern Tian Shan (China), based on Picea Shrenkiana Tree-Ring Width

Bakhtiyorov Zulfiyor1,2*, Yu Ruide1,2, Yang Meilin1,2, Monoldorova Akylai2,3 and Aminov Javhar2,3
1State Key Laboratory of Environment Change in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Chinese Academy of Sciences, , 818 South Beijing Road, Urumqi 830011, Xinjiang, China
2University of Chinese Academy of Sciences, Beijing 100049, China
3State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Chinese Academy of Sciences, , 818 South Beijing Road, Urumqi 830011, Xinjiang, China
*Corresponding Author : Bakhtiyorov Zulfiyor, State Key Laboratory of Environment Change in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi 830011, Xinjiang, China, Tel: (0991)-7827340, Email: yuruide@sina.com

Received Date: Oct 12, 2017 / Accepted Date: Dec 12, 2017 / Published Date: Dec 16, 2017

Abstract

Our recent study introduces the reconstruction of May-June precipitation based on Picea Shrenkiana tree-ring growth, spanned AD 1892-2015. We used three monthly climatic gridded data parameters of China which covers with a 0.25° spatial resolution over 1952-2012 (temperature mean (°C), total precipitation (kg m-2s-1) and total snow-water equivalent (kg m-2)) interpolated to our sampling site for highlight correlations coefficients. Snow-water equivalent with ring-width gives us a significant positive correlation (approximately in p<0.05 level) in April-May period (0.411) and September (0.263). With precipitation, correlation is higher in May-June period (0.468) which leads us that limiting factor in this area is water, which is felt during the initial growth of the tree. Results of negative correlation in March-October period (-0.478) with mean temperature, suggest that increase of temperature leads to increase of evaporation and water transpiration. Our reconstruction indicated 6 dry decades (1920, 1930, 1970, 1980, 2000, 2010) and five wet decades (1910, 1940, 1950, 1960, 1990). Our reconstruction confirms to global change, which suggest decreasing precipitation from 1991 until now. To represent our reconstruction geographical meaning, we conducted spatial correlation between our May-June precipitation reconstruction, instrumental gridded interpolated May-June precipitation and gridded CRU TS 4.0 May-June precipitation, which significant in Xinjiang Tian Shan Mountains and goes through Mongolia, Kazakhstan, Kyrgyzstan and Tajikistan. In addition, we are running Multi-taper spectral analysis and after getting results try to connect our study to ENSO variability, with highfrequency cycles 6.1-year (99%), 5.1-4.8-year (90%), 2.7-2.9-years (90%).

Keywords: Tree-ring; Picea shrenkiana; Reconstruction; Tian Shan

Citation: Zulfiyor B, Ruide Y, Meilin Y, Akylai M, Javhar A (2017) Reconstructed Precipitation for the Eastern Tian Shan (China), based on Picea Shrenkiana Tree-Ring Width. J Earth Sci Clim Change 8: 432. Doi: 10.4172/2157-7617.1000432

Copyright: ©2017 Zulfiyor B, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricteduse, distribution, and reproduction in any medium, provided the original author and source are credited.

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