干旱区研究2017，Vol.34Issue(2)：282-292,11.DOI:10.13866/j.azr.2017.02.06
天山北坡融雪期季节性冻土融化过程分析
Thawing Process of Seasonal Frozen Soil on Northern Slope of the Tianshan Mountains During Snowmelt Period
摘要
Abstract
In his study,the processes and characteristics of thawing of seasonal frozen soil were analyzed based on the observed data of seasonal frozen soil moisture content and temperature in the typical research field in the Juntanghu River Basin on northern slope of the Tianshan Mountains during the period from November 2013 to March 2014.The temporal and vertical variations of seasonal frozen soil moisture content and temperature at different depths during thawing process of seasonal frozen soil were studied,and the hydrological regime of seasonal frozen soil during snowmelt period was discussed.The results are as follows:① The melting process of seasonal frozen soil could be divided into three stages,i.e.the early,medium and late stages;② There was a staged variation of seasonal frozen soil temperature during snowmelt period,the effect of air temperature on soil temperature was decreased with the increase of soil depth,and there was a time lag of the effect;③ Soil moisture content was increased at medium stage of snowmelt period,seasonal frozen soil was melted from both top and bottom,and the soil temperature was significantly affected by soil moisture content during snowmelt period:④ The effect of liquid water content in snow cover on soil moisture and temperature conditions was significant at medium and late stages of snowmelt period,but that of snow cover density on them was low;⑤ The freezing-thawing process of seasonal frozen soil affected significantly the snowmelt runoff in spring.关键词
融雪期/季节性冻土/融化过程/土壤水分/水文效应/军塘湖河流域/天山北坡Key words
snowmelt period/seasonal frozen soil/melting process/soil moisture content/hydrological regime/Juntanghu River Basin/northern slope of the Tianshan Mountains引用本文复制引用
王敬哲,刘志辉,塔西甫拉提·特依拜,王岚,张波..天山北坡融雪期季节性冻土融化过程分析[J].干旱区研究,2017,34(2):282-292,11.基金项目
国家自然科学基金面上项目(41171023) （41171023）
国家自然科学基金重点项目(41130531) （41130531）
