土壤冻结期湿度特征研究及其表层模拟  

Characteristics of Soil Moisture and Its Simulation in Surface Soil Layer in Freezing Period

作　　者：张波[1,2] 刘志辉[1,2,3,4] 

机构地区：[1]新疆大学资源与环境科学学院,新疆乌鲁木齐830046 [2]新疆大学教育部绿洲生态重点实验室,新疆乌鲁木齐830046 [3]干旱生态环境研究所,新疆乌鲁木齐830046 [4]干旱半干旱区可持续发展国际研究中心,新疆乌鲁木齐830046

出　　处：《水土保持通报》2014年第3期247-251,256,共6页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金面上项目"天山北坡典型流域积雪-冻土水热耦合中融水产汇流机制研究"(41171023);水利部公益性行业科研专项经费项目"内陆干旱区最严格水资源管理"(201301103)

摘　　要：利用EM50数据采集系统,在新疆天山北坡呼图壁县军塘湖河流域采集冻结期和融雪期土壤湿度、土壤温度数据,利用SPSS 19.0,Excel,Surfer 8等软件处理采集到的数据,并对其进行分析、制图。另外利用表层土壤温度模拟土壤湿度变化。结果表明,土壤湿度存在垂直分布规律:冻结期,在土壤层的10,32,48cm处存在极小值;冻结期,土壤湿度日变化较小,融雪期,土壤湿度有显著变化,17:00—19:00时达到土壤湿度变化的峰值;利用表层土壤温度可以很好地模拟土壤湿度,在温度上升和下降阶段均有较好的模拟效果。By Using EM50 data collection system, soil moisture and temperature in the freezing and snowmelt periods were collected in the Juntanghu watershed situated on the northern slope of Tianshan Mountains, Hutubi County, Xinjiang Autonomous Region. The software, such as SPSS 19.0, Excel and surfer 8, was used to process the collected data. Meanwhile, change of surface soil moisture was simulated by soil temperature. The results indicated that there was a vertical distribution of soil moisture. In the freezing period, the minimum soil moisture was observed at the depths of 10, 32, and 48 cm; in the freezing period, the daily change of soil moisture was relatively little; and in the snowmelt period, the change was obvious, reaching a peak value at 17 to 19 o＇clock. The temperature of surface soil layer is able to simulate the soil moisture very well and the simulation has a better result both in temperature-rise and temperature-fall periods.

关 键 词：冻结期 军塘湖流域 土壤湿度 土壤温度 

分 类 号：S157[农业科学—土壤学]