干旱区研究2018，Vol.35Issue(1)：122-129,8.DOI:10.13866/j.azr.2018.01.15
沙尘对天山积雪消融的影响
Influence of Dust on Snowpack in the Tianshan Mountains
摘要
Abstract
Snowpack is an important source of water resources in arid area in northwest China.In spring,dust storm weather occurs frequently in the basins around the Tianshan Mountains.Dust deposition on snow cover surface from dust storm can reduce the reflectance of snow cover,increase the solar radiation absorption on snow cover surface,and accelerate snowmelt.It is necessary to study the effects of deposited dust on the dynamic change of snowpack in the Tianshan Mountains for better water resources management in the region.In this study,a simulation experiment of the influence of dust deposition on the dynamic change of snowpack in snowmelt season was carried out at the Tianshan Station for Snow and Avalanche Research.Four treatments,i.e.the natural conditions,2 g · m-2,4 g · m-2 and 8 g · m-2 dust deposition with three replicates,were designed for the field experiment.The experiment was started on March 4 and ended on March 11.After observing and analyzing the physical characteristics of snowpack,the results indicated that snowmelt in the snowpack was significantly affected by dust deposition.The snow grain size on snow surface was increased with the time,and the more dust deposition there was,the larger the snow grain size but the lower the snow reflectance would be.The snowmelt rates under the treatments with 2 g · m-2,4 g · m-2 and 8 g · m-2 dust deposition were increased by 22.36％,46.05％ and 76.90％ compared with that of natural snowpack,respectively.The results of the study could provide the references for simulating the dynamic change of snowpack and managing water resources in arid area in northwest China.关键词
沙尘沉降/积雪/雪粒径/光谱/雪层温度/融雪速率/天山Key words
dust deposition/snowpack/snow grain size/spectrum/snow cover temperature/snowmelt rate/Tianshan Mountains引用本文复制引用
杨涛,郭玲鹏,黄法融,李倩,李兰海..沙尘对天山积雪消融的影响[J].干旱区研究,2018,35(1):122-129,8.基金项目
中国科学院重点部署项目(KZZD-EW-12-2) （KZZD-EW-12-2）
中国科学院科技服务网络计划项目(KFJ-STS-ZDTP-015)资助 （KFJ-STS-ZDTP-015）
