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• CN 62-1072/P
• ISSN 1000-0240
• 创刊于1979年
• 主管单位：中国科学院
• 主办单位：中国科学院寒区旱区
•                  环境与工程研究所
•                  中国地理学会

• 冰冻圈与全球变化 •

### 季节冻土区黑土耕层土壤冻融循环期湿度与温度变化研究

1. 1. 大连理工大学 水环境研究所 辽宁 大连 116024;
2. 黑龙江省水利科学研究院 黑龙江 哈尔滨 150080;
3. 黑龙江工程学院 黑龙江 哈尔滨 150050;
4. 内蒙古大学 内蒙古 呼和浩特 010021;
5. 牧区水利科学研究所 内蒙古 呼和浩特 010021
• 收稿日期:2015-01-30 修回日期:2015-03-21 出版日期:2015-08-25 发布日期:2016-01-18
• 通讯作者: 许士国, E-mail: sgxu@dlut.edu.cn. E-mail:sgxu@dlut.edu.cn
• 作者简介:赵显波(1980-), 女, 黑龙江巴彦人, 高级工程师, 2007年在新疆农业大学获得硕士, 现为大连理工大学在读博士研究生, 主要从事以水文水资源为基础的水环境研究及季节冻土区冻融过程中的水热盐变化研究. E-mail: xianbozhao2004@126.com
• 基金资助:
国家自然科学基金项目(41201264; 40901136); 黑龙江省青年科学基金项目(QC2010099)资助

### Study of the black soil plow layer moisture changing with temperature in freeze-thaw cycle period in the seasonal frozen soil regions

ZHAO Xianbo1 2, LIU Zhenping3, XU Shiguo1, LIU Tiejun4 5

1. 1. Institute of Water Environment, Dalian University of Technology, Dalian 116024, China;
2. Heilongjiang Provincial Hydraulic Research Institute, Harbin 150080, China;
3. Heilongjiang Institute of Technology, Harbin 150050, China;
4. Inner Mongolia University, Hohhot 010021, China;
5. Institute of Water Resources for Pastoral Area, Hohhot 010021, China
• Received:2015-01-30 Revised:2015-03-21 Online:2015-08-25 Published:2016-01-18

Abstract: Soil moisture in the black soil plow layer changing with temperature in freeze-thaw cycle period was studied in a seasonal frozen soil area. There is a Water Conservancy Comprehensive Experimental Research Center of Heilongjiang Province of China in the outskirts of Harbin, where a typical middle-deep seasonal frozen soil experimental observation field was run from November 2011 to April 2012. The measured data of soil moisture and soil temperate within the black soil plow layer were analyzed. The analyzed items included the characteristics of plow layer of black soil moisture on the sunny slopes changing with the freeze-thaw cycles and soil temperature in the process of freeze-thaw cycles in the depths of 1 cm, 5 cm, 10 cm and 15 cm. It is found that the plow layer of black soil moisture is significantly different at different depths in the freeze-thaw process, depending on precipitation and soil temperature. The results show that at 08:00 am, 14:00 pm and 20:00 pm (Beijing time), moistures of plow layer of black soil on sunny slopes at the depths of 15 cm, 10 cm, 5 cm and 1cm in the freeze-thaw cycle period change with the soil temperature with a linear correlation coefficient of determination of 0.9298, 0.9216, 0.5989, 0.7281, respectively, with a slope average standard deviation of 0.017, 0.019, 0.095, 0.056, respectively, and with an intercept average standard deviation of 0.17, 0.25, 1.31, 0.83, respectively. On sunny slopes, plow layer of black soil moistures at the depths of 10 cm and 15 cm change with freeze-thaw soil temperature with a linear relationship remarkably. On sunny slopes, plow layer of black soil moisture at the depths of 5 cm changes with the soil temperature with a linear relationship significantly a bit. Due to the influence of solar radiation, precipitation and evaporation, between moisture and temperature of plow layer of black soil at the depth of 1 cm on sunny slopes is linear correlation still throughout the freeze-thaw period. However, the linear correlation between moisture and temperature at the depth of 1 cm is not as good as those at the depth of 10 cm and 15 cm, but better than that at the depth of 5 cm. Besides, it is necessary to further study the black soil plow layer moisture changing with temperature in the winter when there is a plenty snowfall winter.

• S152.7