The Study On Soil Absorbtion And Condensation In Mu Us Sandland

Soil Absorbtion and Condensation is one of the important water sources which surport the existence of plants and animals, it played an important role on maintaining the Water balance of arid region. In order to discuss the characteristics of Soil absorbtion and condensation in Mu Us Sandland, the paper took the sand soil which between the depth of 0~10cm in Mu Us Sandland development and research center courtyard as research object,using the weighing method to determine the aspects of the start time,duration,amouts,speed and the comparation between absorbtion and condensation of soil absorbtion and condensation. The result as fellow.1,The start time of absorbtion and condensation will Postponed along with the soil depth increasing in Mu Us Sandland; The start time of absorbtion and condensation in rainy season was earlier than dry season; The duration of absorbtion and condensation will shorten along with the soil depth increasing, the duration in rainy season was longer than dry season.2,In rainy season, the soil could condense more water than dry season; Within the range of soil depth between 0~10cm, the soil condensation amouts was biggist in the depth of 6~8cm in dry season. the soil condensation amouts were the biggist in the depth of 0~2cm in rainy season; The Water vapor in air which condenced in soil could reach the depth of 6cm under the surface in Mu Us Sandland; If the soil moisture be higher, the soil could absorb more wapor from aeration zone to condence.3,In dry season, the speed of Soil Absorbtion and Condensation got the peak at 20:00, but the speed would be lower after 20:00. In rainy season, the speed of Soil absorbtion and condensation got the peak also at 20:00, and the speed would be lower after 4:00.4,Almost there was no condensation forming in dry season. In rainy season, the wapor could condence in soil, and the time of condensation lasted about 10h the day. The amouts of absorbtion was larger than condensation in rainy season.5,Among the Environmental factors which affected the soil absorbtion and condensation, the correlation between soil condensation amouts and ground temperature was very high, especially the difference in temperature between surface and 10cm under surface, the correlation could get to -0.89; the correlation between soil condensation amouts and the difference of vapor pressure which surface to 50cm above surface was lowest, the value only -0.235.