摘要
As a highly sensitive indicator of climate change in the arid northwest region of China,glacier dynamics in the Kaidu-Konqi River Basin directly influence regional runoff patterns,thereby playing a crucial role in shapingregional hydrology and maintaining ecological stability.This study systematically assessed glacier distribution in2020 and analyzed glacier changes from 1972 to 2020 using the Chinese Glacier Inventory of Xinjiang in 2020(CGI-XJ2020),historical satellite imagery from 1972,and data from the Second Chinese Glacier Inventory.In2020,the basin contained 713 glaciers covering 313.99 km^(2),with an estimated glacier volume of 11.81 km^(3)(0.41%glacier coverage).Glaciers were predominantly clustered in the northern and southwestern mountains.Small glaciers(<0.5 km^(2))comprised 78%of the glacier count but only 3%of the total area,whereas glaciers≥0.5 km^(2)accounted for 97%of the total area and 83.6%of the glacier volume.From 1972 to 2020,the totalglacier area decreased by 42.28%(229.99 km^(2))and glacier volume by 49.51%(11.58 km^(3)),equating to meanannual rates of−0.88%and−1.03%,respectively.Glacier retreat drives temporary increases in meltwatersupply but threatens long-term regional runoff stability and ecological water security.The retreat rate variedover different periods,with a more pronounced decline observed between 1972 and 2007.These findingshighlight an accelerating glacier loss in the basin,underscoring the need for continued monitoring and assess-ment of its hydrological and ecological impacts.
基金
supported by the Third Xinjiang Scientific Expedition Program(Grant Nos.2022xjkk0101,2022xjkk0802)
the Second Qinghai-Tibet Scientific Expedition Program(Grant No.2019QZKK0201)
the National Natural Science Foundation of China(Grant No.42301166)
the China-Tajikistan intergovernmental Joint R&D Project(Grant No.2025YFE0102800)
the Science and Technology Program of Gansu Province(Grant Nos.23ZDFA017,22ZD6FA005)
