Analysis of glacier change vulnerability and influencing factors of adaptability in the Chinese Altai Mountains
Glacier is an important component of cryosphere.As an important fresh water resource in arid area of western China,the vulnerability of glacier change is closely related to regional social and economic develop-ment.Based on remote sensing images,this paper analyzed the characteristics of glacier change in the Chinese Altai Mountains from 1990 to 2020,constructed the evaluation framework and index system of glacier change vulnerability,demonstrated the temporal and spatial evolution pattern of glacier change vulnerability in the Chi-nese Altai Mountain from 2000 to 2020,and explored deeply the influencing factors of glacier change adaptabili-ty by using the obstacle degree model.The results showed that:(1)In the past 30 years from 1990 to 2020,the glacier area and volume in the Chinese Altai Mountains had decreased by about 20%,and there were significant differences in the change rate of glacier area in different counties and cities.The glacier area reduction rate in Qinghe was the largest,reaching 73%,while that in Burqin was the smallest,only 18%.(2)The glacier change vulnerability in the Chinese Altai Mountains decreased slowly at first and then experienced an accelerated increase over time,with the regional differences decreasing continuously.In spatial distribution,the glacier change vulnerability in the northwest and east was moderately high;the glacier change vulnerability in southwest was low;the vulnerability in central was the lowest.(3)The improvement of adaptability can effectively reduce the glacier change vulnerability in the Chinese Altai Mountains.Taking 2010 as the boundary,the glacier change adaptability in the Chinese Altai Mountains depended on the improvement of the regional economy and water resources in the early stage,and the improvement of adaptability in the later stage was significantly in-clined towards social public income,investment,and public service quality.The ways to improve adaptability in counties and cities became more diversified and balanced.
glacier changevulnerabilityadaptabilityChinese Altai Mountainsobstacle degree model
NETL
NSTL
万方数据
