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干旱区地理 ›› 2019, Vol. 42 ›› Issue (4): 774-781.doi: 10.12118/j.issn.1000-6060.2019.04.08

• 气候与水文 • 上一篇    下一篇

新疆天山及北疆地区积雪反照率差异

盛光伟1,2,3，肖鹏峰1,2,3，张学良1,2,3，冯学智1,2,3，杨永可1,2,3，胡瑞1,2,3，刘豪1,2,3，张正1,2,3   

  1. 1 南京大学地理与海洋科学学院，江苏南京210023；2 南京大学 江苏省地理信息技术重点实验室，江苏南京210023；3 南京大学卫星测绘技术与应用国家测绘地理信息局重点实验室，江苏南京210023
  • 收稿日期:2019-01-12 修回日期:2019-04-01 出版日期:2019-07-25 发布日期:2019-07-24
  • 通讯作者: 肖鹏峰（1979-），男，副教授，主要从事积雪遥感与数字图像处理研究. E-mail：xiaopf@nju.edu.cn
  • 作者简介:盛光伟（1995-），男，硕士研究生，主要从事积雪遥感与数字图像处理研究. E-mail：shenggw95@gmail.com
  • 基金资助:
    国家科技基础资源调查专项课题（2017FY100502）和国家自然科学基金项目（41671344）共同资助

Differences in snow albedo between Tianshan Mountainsand northern Xinjiang

SHENG Guangwei1,2,3,XIAO Pengfeng1,2,3,ZHANG Xueliang1,2,3,FENG Xuezhi1,2,3,YANG Yongke1,2,3,HU Rui1,2,3,LIU Hao1,2,3,ZHANG Zheng1,2,3   

  1. 1 Department of Geographic Information Science,Nanjing University,Nanjing 210023,Jiangsu,China;2 Jiangsu Provincial  Key Laboratory of Geographic Information Science and Technology,Nanjing University,Nanjing 210023,Jiangsu,China; 3 Key Laboratory for Satellite Mapping Technology and Applications of State Administration of surveying, Mapping and  Geoinformation of China,Nanjing 210023,Jiangsu,China
  • Received:2019-01-12 Revised:2019-04-01 Online:2019-07-25 Published:2019-07-24

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摘要： 新疆天山和北疆地区是我国三大稳定积雪区之一，积雪反照率的变化显著地影响其地表吸收的太阳辐射能量。2018年1~3月，在新疆天山和北疆地区进行了积雪反照率观测，发现研究区的积雪反照率存在明显的时空差异。时间上，由于受到气温变化的影响，研究区的积雪反照率整体呈现下降的趋势，而且不同时期的下降幅度有差异，1月末~3月初反照率的降低相比1月初~1月末反照率降低更加明显。空间上，由于受到污化物的影响，各区域（阿勒泰地区、塔城地区、天山北坡和伊犁河谷）的积雪反照率之间存在差异，其中天山地区（天山北坡和伊犁河谷）的积雪反照率低于北疆地区（阿勒泰地区和塔城地区），天山北坡的反照率最低；在积雪稳定期及消融期，污化物对积雪反照率的影响最为明显。

关键词: 积雪, 反照率, 时空差异, 积雪变化, 新疆

Abstract: Tianshan Mountains and Northern Xinjiang is one of the three stable snowcovered areas in winter in China.The changes in snow albedo of this area significantly affect the solar radiation energy absorbed by the surface.Based on the snow albedo observation in Tianshan Mountains and Northern Xinjiang from January to March in 2018,combined with temperature,industrial structure and urban distribution of Xinjiang,this paper summarizes the spatial and temporal differences of snow albedo,and the change law of snow albedo was also analyzed.It could help to explore the relationship between snow albedo and snow cover in this region,and provide a scientific basis for further study of the role of snow in the balance of surface energy,hydrological processes and global changes.The 57 points with snow albedo,temperature,snow surface density,snow depth and snow particle size distributed in Tianshan Mountains and Northern Xinjiang are used.In terms of method,this paper analyzes the difference of snow albedo in the study area from time and space.In terms of time,the albedo distribution range is divided into four intervals,by analyzing the distribution of snow albedo in the three periods in four intervals,the relationship between snow albedo and temperature,snow surface density,snow depth and snow particle size is summarized.In terms of space,the study area is divided into four areas: Altay region,Tacheng region,the northern slope of Tianshan Mountains and Ili River Valley,combined with Xinjiang industrial structure and urban distribution,it is concluded that the difference in pollutant content is the main factor causing the difference in snow albedo in the four regions.From time perspective,due to the influence of temperature changes,the snow albedo in the study area showed a downward trend.The declines in different periods were different,and the change in albedo from the end of January to the beginning of March is more pronounced than the change in albedo from the beginning of January to the end of January.In terms of locations,there is a difference between snow albedo in various regions (Altay region,Tacheng region,the northern slope of Tianshan Mountains and Ili River Valley) due to the influence of the pollutant content.The snow albedo in the Tianshan region (the northern slope of Tianshan Mountains and the Ili River Valley) is lower than that in the northern Xinjiang region (Altay region and Tacheng region),and the albedo on the northern slope of Tianshan Mountains is the lowest.Last but not least,during the stable period and the ablation period,the effect of the pollutant content on snow albedo is most obvious.

Key words: snow cover, albedo, spatiotemporal difference, snow changes, Xinjiang