首页|Glacier runoff variation and its influence on river runoff during 1961-2006 in the Tarim River Basin, China

Glacier runoff variation and its influence on river runoff during 1961-2006 in the Tarim River Basin, China

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Using monthly precipitation and temperature data from national meteorological stations, 90 m resolution DEM and a digital vector map of modem glaciers from the Chinese Glacier Inventory, the glacier mass balance and glacier runoff in the Tarim River Basin (TRB), China, were estimated based on a monthly degree-day model for 1961-2006. The results suggest that the modified monthly degree-day model can simulate the long-term changes in glacier mass balance and glacier runoff, which have been confirmed by short-term observation data and other results in literatures. The characteristics and trends of mass balance and glacier runoff variation were analyzed. It was found that the mean annual glacier mass balance during 1961-2006was -139.2 mm per year and the cumulative mass balance over the 46 year period was -6.4 m in the TRB. The glacier mass balance displayed a clear decreasing trend over the entire TRB during 1961-2006. The average annual glacier runoff in the TRB was 144.16x108 m3 for 1961-2006. The results also show that glacier runoff has increased in the last 46 years, especially since the 1990s with 85.7% of the increased river flow being derived from the increased glacier runoff caused by loss of ice mass. Over the entire TRB, glacier runoff accounts for 41.5% of the total river flow during 1961-2006. The impact of glacier runoff on river flow has increased in the TRB as a result of glacier shrinkage.

glacier mass balancedegree-day modelglacier runoffTarim River Basin

GAO Xin、YE BaiSheng、ZHANG ShiQiang、QIAO ChengJun、ZHANG XiaoWen

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State Key Laboratory of Cryospheric Sciences CAREERI, Chinese Academy of Sciences, Lanzhou 730000, China

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

The Resource Environment and Urban and Rural Planning Department, Lanzhou Commercial College, Lanzhou 730020, China

This work was supported by National Basic Research Program of ChinaKey Research Project of the Knowledge Innovation Project of Chinese Academy of SciencesSpecial Trade Project for Commonweal of Water Resource100 Talents Program of China

2007CB411502KZCX2-YW-301200701046

2010

10.1007/s11430-010-0073-4

中国科学:地球科学(英文版)
中国科学院

中国科学:地球科学(英文版)

SCI
影响因子：1.002
ISSN：1674-7313
年,卷(期)：2010.53(6)
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