单 位：
新疆大学干旱生态环境研究所;武汉市花木公司;新疆大学资源与环境科学学院;绿洲生态教育部重点实验室;干旱半干旱地区可持续发展国际研究中心
摘 要：
土壤温度的变化直接影响到季节性冻土的冻融过程,进而影响融雪径流的产流机制,且往往是春洪发生的关键之所在,故深入研究土壤温度的时空变化特征具有重要的现实意义。以天山北坡军塘河流域为研究区,采用定点对比连续观测的方法,利用2010年3月13日至4月1日融雪期观测到的雪盖和裸地两种不同下垫面的浅层(5,10,20,30,40cm)土壤温度气温资料,对比分析各层深度的土温变化情况、雪盖对其产生的影响及其与近地面气温之间的关系。结果表明:雪盖对浅层土壤具有明显的绝热保温作用,由浅到深各层土温变化具有传递和延迟现象;土壤日温差也会随土层深度的增加而减小;近地面气温与土壤温度存在较高的相关关系,土壤温度日变化表现为单峰单谷型波动。
译 名：
Characteristics of Soil Temperature Analysis Under the Influence of Snow Cover in the Ablation Period of Seasonal Frozen Soil
作 者：
HU Ming1,2,LIU Zhi-hui1,2,3,4,CHEN Kai1,5,WANG Rong-jun1,2,Zhang Wen-na1,2(1.College of Resources and Environment Science,Xinjiang University,Urumqi 830046,China; 2.Oasis Ecology Key Lab of Ministry of Education,Urumqi 830046,China;3.Institute of Arid Environment of Xinjiang University,Urumqi 830046,China;4.International Center for Desert Affairs-Study on Sustainable Development in Arid and Semi-arid Lands,Urumqi 830046,China;5.Wuhan Huamu Company,Wuhan 430014,China)
关键词：
snow cover;soil temperature;snow melting period
摘 要：
Changes in soil temperature directly affect the process of freezing and thawing of seasonal frozen soil,while frozen soil is an important underlying surface of influencing snowmelt runoff and runoff yield mechanism,and is often the key to the occurrence of flood in spring.Therefore,deeply researching the temporal and spatial characteristics of soil temperature has important practical significance.Taking Juntang River watershed of the north slope of Tianshan as studying area,and applying the method of fixed-point comparison and continuous observation,making use of temperature data of shallow surface(0,10,20,30,40 cm) soil temperature of two different underlying surface,the snow-cover and bare ground,melting snow period from March 12th to April 1st,2010,the relationship of the depth of each layer changes in soil temperature,snow cover′s impact and the relationship between near-surface air temperature were comparatively analyzed.The results showed that snow cover had the significant impact of insulation capacity on shallow soil temperature;from shallow to deep,soil temperature changes of every layer showed the phenomenon of delivery and delays;soil diurnal temperature also decreased with the increasing depth of the soil layer;near surface air temperature and soil temperature had the high correlation,diurnal variation of soil temperature showed a single peak single-valley fluctuations.
