干旱区生态环境知识资源中心(Arid): Glacier variations and their response to climate change in an arid inland river basin of Northwest China

Arid

	Glacier variations and their response to climate change in an arid inland river basin of Northwest China
	Zhou Zuhao; Han Ning; Liu Jiajia; Yan Ziqi; Xu Chongyu; Cai Jingya; Shang Yizi; Zhu Jiasong
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2020
卷号	12 期号:3 页码:357-373
英文摘要	Glaciers are a critical freshwater resource of river recharge in arid areas around the world. In recent decades, glaciers have shown evidence of retreat due to climate change, and the accelerated ablation of glaciers and associated impacts on water resources have received widespread attention. Glacier variations result from climate change, so they can serve as an indicator of climate change. Considering the climatic differences in different elevation ranges, it is worthwhile to explore whether different responses exist between glacier area and air temperature in each elevation zone. In this study, we selected a typical arid inland river basin (Sugan Lake Basin) in the western Qilian Mountains of Northwest China to analyze the glacier variations and their response to climate change. The glacier area data from 1989 to 2016 were delineated using Landsat Thematic Mapper (TM), Enhanced TM+ (ETM+) and Operational Land Imager (OLI) images. We compared the relationships between glacier area and air temperature at seven meteorological stations in the glacier-covered areas and in the Sugan Lake Basin, and further analyzed the relationship between glacier area and mean air temperature of the glacier surfaces in July-August in the elevation range of 4700-5500 m a.s.l. by the linear regression method and correlation analysis. In addition, based on the linear regression relationship established between glacier area and air temperature in each elevation zone, we predicted glacier areas under future climate scenarios during the periods of 2046-2065 and 2081-2100. The results indicate that the glaciers experienced a remarkable shrinkage from 1989 to 2016 with a shrinkage rate of -1.61 km~2/a (-0.5%/a), and the rising temperature is the decisive factor dominating glacial retreat; there is a significant negative linear correlation between glacier area and mean air temperature of the glacier surfaces in July-August in each elevation zone from 1989 to 2016. The variations in glaciers are far less sensitive to changes in precipitation than to changes in air temperature. Due to the influence of climate and topographic conditions, the distribution of glacier area and the rate of glacier ablation first increased and then decreased in different elevation zones. The trend in glacier shrinkage will continue because air temperature will continue to increase in the future, and the result of glacier retreat in each elevation zone will be slightly slower than that in the entire study area. Quantitative glacier research can more accurately reflect the response of glacier variations to climate change, and the regression relationship can be used to predict the areas of glaciers under future climate scenarios. These conclusions can offer effective references for assessing glacier variations and their response to climate change in arid inland river basins in Northwest China as well as other similar regions in the world.
英文关键词	glacier variations climate change glacier area remote sensing regression relationship elevation zone Qilian Mountains
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:6751657
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336303
作者单位	Zhou Zuhao, China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China.; Liu Jiajia, China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China.; Yan Ziqi, China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China.; Cai Jingya, China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China.; Shang Yizi, China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China.; Han Ning, China Institute of Water Resources and Hydropower Research;;Beijing Branch, North China Municipal Engineering Design and Resear...
推荐引用方式 GB/T 7714	Zhou Zuhao,Han Ning,Liu Jiajia,et al. Glacier variations and their response to climate change in an arid inland river basin of Northwest China[J],2020,12(3):357-373.
APA	Zhou Zuhao.,Han Ning.,Liu Jiajia.,Yan Ziqi.,Xu Chongyu.,...&Zhu Jiasong.(2020).Glacier variations and their response to climate change in an arid inland river basin of Northwest China.Journal of Arid Land,12(3),357-373.
MLA	Zhou Zuhao,et al."Glacier variations and their response to climate change in an arid inland river basin of Northwest China".Journal of Arid Land 12.3(2020):357-373.