首页|Five decades of glacier changes in the Hulugou Basin of central Qilian Mountains, Northwest China

Five decades of glacier changes in the Hulugou Basin of central Qilian Mountains, Northwest China

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The Heihe River Basin is the second largest inland river basin in the arid regions of Northwest China.Glaciers provide a large proportion of water resources for human production and living.Studies of glacier changes and their impact on water resources in the arid lands are of vital importance.A joint expedition was carried out in 2010 for investigating glaciers in the Hulugou Basin,which is located in the upper reaches of Heihe River.Therefore,glacier changes in the Hulugou Basin of central Qilian Mountains during the past 50 years were analyzed in this study by comparing topographic maps,satellite images,digital elevation models and field observation data from different periods.Results showed that the total area of the 6 glaciers in the Hulugou Basin decreased by 0.590±0.005 km2 during the period 1956-2011,corresponding to a loss of 40.7％ over the total area in 1956.The average area reduction rate of the 6 glaciers is 0.011 km2/a.During the past five decades,the glacier shrinkage was accelerated.The changes in glacier ice surface elevation ranged from-15 to 3 m with an average thinning of 10±8 m or an annual decrease of 0.23±0.18 m (0.20±0.15 m/a water equivalent) for the period 1956-2000.The area of Shiyi Glacier in the Hulugou Basin decreased from 0.64 km2 in 1956 to 0.53 km2 in 2011 with a reduction rate of 17.2％.The Shiyi Glacier had been divided into two separated glaciers because of severe melting.Comparative analysis showed that glacier shrinkage in the Hulugou Basin is more serious than that in the other regions of Qilian Mountains.

glacier changeice surface elevation changeclimate changeShiyi GlacierHulugou Basin

Hui CHEN、ZhongQin LI、PuYu WANG、ZhongPing LAI、RenSheng CHEN、BaoJuan HUAI

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College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China

Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

National Basic Research Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFunds for Creative Research Groups of ChinaSpecial Financial Grant from the China Postdoctoral Science FoundationWest Light Program for Talent Cultivation of Chinese Academy of Sciences

2013CBA018014130106941471058411210012014T70948

2015

10.1007/s40333-014-0011-y

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
年,卷(期)：2015.7(2)
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