1.Keshan Experimental Station Attached to Heilongjiang Soil and Water Conservation Research Institute,161600,Keshan County;2.Heilongjiang Province Bin County Agriculture Radio and Television School,150400,Bin County: Heilongjiang,China
Abstract：It is about 70 percent of the whole land area on earth that effected by freezethaw action,but it is 98 percent in China.Freeze-thaw action can effect in varying degrees to factors such as soil moisture,density,organic quality and soil machinery composition.Based on field observation and interior experiment,the relation between freeze-thaw action and soil moisture was studied in Northesat black soil region.Results showed that under the freeze-thaw the soil water flow from lower part with height flow to upper part with low flow,and water content of freezing soil increased.The soil moisture removed lessened soil moisture content of non-freezing layer.The soil moisture migration in the process being frozen led to soil swelling deformation,which is the major factor caused freeze-thaw erosion.
景国臣1；任宪平1；刘绪军1；刘丙友1；张丽华2；杨亚娟1；王亚娟1. 东北黑土区冻融作用与土壤水分的关系[J]. 中国水土保持科学, 2008, 6(5): 32-36.
JING Guo-Chen-；Lin-Xian-Beng-；Liu-Xu-Jun-；Liu-Bing-You-；Zhang-Li-Hua-；Yang-E-Juan-；Wang-E-Juan. Relationship between freeze-thaw action and soil moisture for Northeast black soil region of China. SSWCC, 2008, 6(5): 32-36.
2008, Vol. 6 
