Spatiotemporal changes of typical glaciers and their responses to climate change in Xinjiang, Northwest China

HUANG Xiaoran ¹BAO Anming ²GUO Hao ³MENG Fanhao ⁴ZHANG Pengfei ⁵ZHENG Guoxiong ¹YU Tao ¹QI Peng ⁶Vincent NZABARINDA ¹DU Weibing⁷

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作者信息

1. State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China;University of Chinese Academy of Sciences,Beijing 100049,China
2. State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China;Research Center for Ecology and Environment of Central Asia,Chinese Academy of Sciences,Urumqi 830011,China;China-Pakistan Joint Research Center on Earth Sciences,Chinese Academy of Sciences and Higher Education Commission,Islamabad 45320,Pakistan
3. School of Geography and Tourism,Qufu Normal University,Rizhao 276800,China
4. College of Geographical Science,Inner Mongolia Normal University,Hohhot 010022,China
5. Xuchang University,Xuchang 461000,China
6. Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China
7. School of Surveying and Land Information Engineering,Henan Polytechnic University,Jiaozuo 454000,China
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Abstract

Glaciers are highly sensitive to climate change and are undergoing significant changes in mid-latitudes. In this study, we analyzed the spatiotemporal changes of typical glaciers and their responses to climate change in the period of 1990–2015 in 4 different mountainous sub-regions in Xinjiang Uygur Autonomous Region of Northwest China: the Bogda Peak and Karlik Mountain sub-regions in the Tianshan Mountains; the Yinsugaiti Glacier sub-region in the Karakorum Mountains; and the Youyi Peak sub-region in the Altay Mountains. The standardized snow cover index (NDSI) and correlation analysis were used to reveal the glacier area changes in the 4 sub-regions from 1990 to 2015. Glacial areas in the Bogda Peak, Karlik Mountain, Yinsugaiti Glacier, and Youyi Peak sub-regions in the period of 1990–2015 decreased by 57.7, 369.1, 369.1, and 170.4 km², respectively. Analysis of glacier area center of gravity showed that quadrant changes of glacier areas in the 4 sub-regions moved towards the origin. Glacier area on the south aspect of the Karlik Mountain sub-region was larger than that on the north aspect, while glacier areas on the north aspect of the other 3 sub-regions were larger than those on the south aspect. Increased precipitation in the Karlik Mountain sub-region inhibited the retreat of glaciers to a certain extent. However, glacier area changes in the Bogda Peak and Youyi Peak sub-regions were not sensitive to the increased precipitation. On a seasonal time scale, glacier area changes in the Bogda Peak, Karlik Mountain, Yinsugaiti Glacier, and Youyi Peak sub-regions were mainly caused by accumulated temperature in the wet season; on an annual time scale, the correlation coefficient between glacier area and annual average temperature was –0.72 and passed the significance test at P<0.05 level in the Karlik Mountain sub-region. The findings of this study can provide a scientific basis for water resources management in the arid and semi-arid regions of Northwest China in the context of global warming.

Key words

glacier area change/normalized snow cover index (NDSI)/climate change/remote sensing/Altay Mountains/Tianshan Mountains/Karakorum Mountains

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基金项目

National Key Research&Development Program of China(2017YFB0504204)

K.C.Wong Education Foundation(GJTD-2020-14)

International Collaboration Project of the Chinese Academy of Sciences(131965KYSB20200029)

New Water Resources Strategic Research Project in Southern Xinjiang Uygur Autonomous Region,China(403-1005-YBN-FT6I-8)

出版年

2022

干旱区科学

中国科学院新疆生态与地理研究所,科学出版社

干旱区科学

CSTPCDCSCDSCI

影响因子：1.743

ISSN：1674-6767

参考文献量18

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