Glacier changes in the Qilian Mountains in the past half-century: Based on the revised First and Second Chinese Glacier Inventory
Glacier changes in the Qilian Mountains in the past half-century: Based on the revised First and Second Chinese Glacier Inventory
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半个世纪以来祁连山冰川变化——基于中国第一、第二次冰川编目修订
DOI：
10.1007/s11442-018-1468-y
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发表时间：
2018-04
影响因子：
4.9
通讯作者：
Xu Junli
中科院分区：
文献类型：
--
作者：
Sun Meiping;Liu shiyin;Yao xiaojun;Guo Wanqin;Xu Junli
冰川是中国西部干旱、半干旱地区最重要的淡水资源。根据主要根据 Landsat TM/ETM+ 影像编制的第二次中国冰川清查 (SCGI)，2005 年至 2010 年，祁连山有 2684 条冰川，覆盖面积 1597.81±70.30 km2，冰量约为 84.48 km3。虽然大多数冰川较小（85.66% <1.0 km2），但也有一些较大的冰川。其中1.0-5.0平方公里范围内的12.74%）覆盖了冰川总面积的42.44%。老虎沟12号冰川（20.42平方公里）位于大雪岭北坡，是祁连山唯一一座>20平方公里的冰川。冰川中位海拔4972.7米，自东向西逐渐升高。祁连山冰川分布在甘肃省和青海省，分别有1492条冰川（760.96平方公里）和1192条冰川（836.85平方公里）。疏勒河流域是冰川面积和体积最多的地区。然而，中国第二大内陆河流黑河的平均冰川面积最小。对比SCGI中的冰川和根据1956年至1983年拍摄的地形图和航拍照片修正的冰川清单，冰川全部消退，这与中国西部其他山区和高原地区的情况一致。半个世纪以来，冰川面积和体积分别减少了420.81平方公里（–20.88%）和21.63平方公里（–20.26%）。面积<1.0平方公里的冰川数量和面积衰退幅度最大。由于冰川萎缩，4000米以下的冰川完全消失。祁连山冰川变化呈现出明显的纵向地带性，即东部冰川萎缩较快，中西部冰川萎缩较缓慢。冰川退缩的主要原因是气温升高，但随着降水量的增加，这一现象略有缓解。
Glaciers are the most important fresh-water resources in arid and semi-arid regions of western China. According to the Second Chinese Glacier Inventory (SCGI), primarily compiled from Landsat TM/ETM+ images, the Qilian Mountains had 2684 glaciers covering an area of 1597.81±70.30 km2 and an ice volume of ~84.48 km3from 2005 to 2010. While most glaciers are small (85.66% are <1.0 km2), some larger ones (12.74% in the range 1.0–5.0 km2) cover 42.44% of the total glacier area. The Laohugou Glacier No.12 (20.42 km2) located on the north slope of the Daxue Range is the only glacier >20 km2in the Qilian Mountains. Median glacier elevation was 4972.7 m and gradually increased from east to west. Glaciers in the Qilian Mountains are distributed in Gansu and Qinghai provinces, which have 1492 glaciers (760.96 km2) and 1192 glaciers (836.85 km2), respectively. The Shule River basin contains the most glaciers in both area and volume. However, the Heihe River, the second largest inland river in China, has the minimum average glacier area. A comparison of glaciers from the SCGI and revised glacier inventory based on topographic maps and aerial photos taken from 1956 to 1983 indicate that all glaciers have receded, which is consistent with other mountain and plateau areas in western China. In the past half-century, the area and volume of glaciers decreased by 420.81 km2(–20.88%) and 21.63 km3(–20.26%), respectively. Glaciers with areas <1.0 km2decreased the most in number and area recession. Due to glacier shrinkage, glaciers below 4000 m completely disappeared. Glacier changes in the Qilian Mountains presented a clear longitudinal zonality, i.e., the glaciers rapidly shrank in the east but slowly in the central-west. The primary cause of glacier recession was warming temperatures, which was slightly mitigated with increased precipitation.
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DOI：
--
发表时间：
2010
期刊：
Journal of Glaciology and Geocryology
影响因子：
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作者：
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通讯作者：
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DOI：
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2015
期刊：
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影响因子：
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2005
期刊：
Research of Soil and Water Conservation
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2000-03
期刊：
Plateau Meteorology
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作者：
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影响因子：
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作者：
Shiyin Liu;Wenxin Sun;Yongping Shen;L. Gang
通讯作者：
Shiyin Liu;Wenxin Sun;Yongping Shen;L. Gang