新疆环境保护2025，Vol.47Issue(2)：11-21,11.
阿尔泰山积雪对气候变化的响应研究
Study on the Response of Snow Cover to Climate Change in Altai Mountains
摘要
Abstract
The relationship between the spatiotemporal variations of snow cover and climate change in the Altay Mountains was studied by using snow depth(SD),snow coverage fraction(SCF)and snow cover days(SCD)extracted from MODIS and microwave remote sensing data products from 2010 to 2020,combined with the temperature and precipitation data provided by the space-time tripole data center.The results showed that SD,SCF and SCD in the Altai Mountains decreased at a rate of 0.22cm/a,0.78％/a and 2.83 d/a from 2010 to 2020,respectively,showing a spatial pattern of high in the southeast and low in the northwest.The snow cover decreased most significantly in areas below 2 000 m altitude.The climate of the Altai Mountains showed a warming and drying trend,and the warming and drying weakened from southeast to northwest.The precipitation reduction rate decreased from 1.33 mm/a to 0.13 mm/a,and the warming rate decreased from 0.44 ℃/a to 0.21 ℃/a.In terms of elevation,2 500 meters was identified as a critical threshold,with warming & drying conditions below this altitude,and warming & moistening conditions above this altitude.Precipitation reduction was identified as the primary driver of snow degradation.SD and SCF below 2 500 meters significantly decreased with rising temperatures and decreasing precipitation,and the influence of precipitation reduction on SD and SCF decreased from southeast to northwest.关键词
积雪深度/积雪覆盖度/积雪日数/气候变化/阿尔泰山Key words
snow depth/snow cover fraction/snow cover days/climate change/Altai Mountains分类
天文与地球科学引用本文复制引用
石崇儒,李艳红..阿尔泰山积雪对气候变化的响应研究[J].新疆环境保护,2025,47(2):11-21,11.基金项目
新疆维吾尔自治区协同创新专项(上海合作组织科技伙伴计划及国际合作计划)(2023E01009) （上海合作组织科技伙伴计划及国际合作计划）
