| 沙漠与沙漠化 |
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| Analysis on Soil Condensation Water Source in Mu Us Sandland |
| LI Hong-bo1, BAI Ai-ning1, ZHANG Guo-sheng2, WANG Lin-he1, YANG Xin-lin3, ZHANG Yu4 |
| 1.College of Ecology and Environmental Science, Inner Mongolia Agriculture University, Hohhot 010019, China; 2.College of Forestry, Inner Mongolia Agriculture University, Hohhot 010019, China; 3.Science and Technology Park, Inner Mongolia Agriculture University, Hohhot 010019, China; 4.Taian Water Conservancy and Fishery Bureau, Taian 271000, Shandong, China |
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Abstract Condensation water in soil is an important water source for semiarid ecosystems. In order to clarify water vapor source of condensation water in the upper 5 cm soil layer under canopy of Sabina vulgaris in Mu Us Sandland, a homemade test tube was used to operate study in the yard of Mu Us Sandland Development and Research Center from September to October 2008. The results indicate that there are three kinds of water vapor source: air vapor directly adsorbed by soil, condensation water from air and water vapor from the lower soil layer. Water vapor from air is always condensed and evaporated earlier than water vapor from lower soil layer at upper 5 cm soil layer. The contribution rate of water vapor from air was smaller than that from lower soil layer, and their contribution ratios were 2∶5 and 3∶10 respectively in early to mid-September and late September to mid-October 2008. A strong and significant correlation was found between condensation volume and evaporation volume per day.
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Received: 27 May 2009
Published: 20 March 2010
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2010, Vol. 30 
