Subjects: Geosciences >> Geography submitted time 2023-08-01 Cooperative journals: 《干旱区地理》
Abstract：从流域尺度揭示天山北坡冰川变化状况，对下游绿洲地区水资源的合理开发利用具有重要意义。基于多源遥感影像提取天山北坡诸河流域近期冰川边界，结合前期发布的冰川编目及ASTER DEM数据，对该区域冰川面积和物质平衡变化特征进行了分析。结果表明：（1） 2015年前后天山北坡共计分布冰川10061条，总面积约4855.85245.86 km2。1960s2015年天山北坡国内段冰川面积萎缩速率为0.52%a-10.06%a-1，且近年来呈加速萎缩趋势（0.96%a-10.88%a-1）；19992015年天山北坡国外段冰川面积萎缩速率约为0.56%a-10.31%a-1。（2） 20002020年天山北坡冰川表面高程变化速率约为-0.570.01 ma-1，冰川物质呈持续亏损态，物质平衡为-0.390.04 m w.e.a-1。（3） 天山北坡东、西段冰川面积和物质平衡变化均存在一定的空间差异性，近十几年间，东段各子流域冰川面积萎缩速率和物质亏损速率均相对较大。
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Glaciers, an important part of Asia’s water tower, are extremely sensitive to climate change. The study on the spatiotemporal pattern of the changes of the glaciers in the Tibetan Plateau and surroundings in the context of global warming is helpful to identify the main water storage and supply areas of Asian Water Towers, which is of great significance for the rational planning and utilization of water resources. Through comprehensive analysis, it was revealed that the “Karakoram anomaly” might expand in different degrees to the Western Kunlun Mountains and the Pamirs, while the glaciers in the other parts of the Tibetan Plateau and surroundings were in an accelerated melting state recently. Moreover, we also illuminated the influences of the changes of the glaciers over the past 50 years and in different climate scenarios in the future on the basin water resources and sea level rise, and pointed out that the glacier observation and investigation should be carried out systematically, and a climate-ice-hydrological processes coupling model should be set up, in order to accurately assess the glacier melt water resources, which is an important basis for the green silk road construction.
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