太原理工大学学报2018，Vol.49Issue(3)：412-417,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2018.03.007
冻融期气温与土壤冻融过程的关系研究
Relationship Between Air Temperatures and Soil Freezing-Thawing Process
摘要
Abstract
In order to reveal the influence of temperature on soil freezing and thawing rate, and the relationship between soil freezing-thawing characteristics and air temperature,the air temperature and soil freeze-thaw process was monitored during eight consecutive freeze-thaw peri-ods at Taigu Water Balance Experimental Field,Bureau of Hydrology and Water Resources Sur-vey of Shanxi Province.The results show that:when the temperature drops rapidly to below 0 ℃and the daily average temperature is negative,the surface soil has no characteristic of daytime thawing and night freezing,and directly enters the stable freezing stage.The maximum soil freezing depth and average soil freezing rate (AFR)in stable freezing period have a close linear correlation with daily average negative temperature.The average soil thawing rate(ATR)in tha-wing period is about 35%~132% higher than AFR,and ATR has a linear relationship with the daily maximum temperature.The research results are significant for agricultural production and engineering construction in seasonal frozen soil area.关键词
冻土/冻结/融化/气温Key words
frozen soil/freezing/thawing/air temperature分类
农业科技引用本文复制引用
苗春燕,陈军锋,郑秀清..冻融期气温与土壤冻融过程的关系研究[J].太原理工大学学报,2018,49(3):412-417,6.基金项目
国家自然科学基金资助项目(41572239,41502243) （41572239,41502243）
山西省自然科学基金资助项目(2015021169) （2015021169）
