[1]TIAN Hong-zhen,YANG Tai-bao,LIU Qin-ping.Relationship between Climate Change and Glacier Retreat over the Last 40 Years in Lenglongling Range of Eastern Qilian Mountains[J].Research of Soil and Water Conservation,2012,19(05):34-38.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 05
Page number:
34-38
Column:
Public date:
2012-10-20
- Title:
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Relationship between Climate Change and Glacier Retreat over the Last 40 Years in Lenglongling Range of Eastern Qilian Mountains
- Author(s):
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TIAN Hong-zhen1,2, YANG Tai-bao1,2, LIU Qin-ping2
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1. Institute of Glaciology and Ecogeography, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China;
2. College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
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- Keywords:
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glacier retreat; climate change; remote sensing; Eastern Qilian Mountains; Lenglongling Range
- CLC:
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P343.6
- DOI:
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- Abstract:
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The glacier outlines of the year 1973 were delineated manually from a Landsat MSS scene. The glacier outlines of the year 1999 and 2010 were delineated in a semi-automated way using band TM3/TM5 ratio images of Landsat ETM or TM scenes. The decrease in glacier extent was 56.21% between 1973 and 2010 because of rise of temperature, and a rapid and accelerating shrinkage in the last decade was detected, which was consistent with the temperature increase from 1997. Overall, south facing glaciers shrank most, which indicated that glaciers on this aspect were more sensitive to climate changes in this region. Given the temperature increase in the future, based on IPCC, the glaciers in this region will continue to retreat. With glaciers retreat and mass loss, their contribution to runoff will decrease, thereby serious sustainability concerns will be raised.