中文摘要：

为探讨半干旱区不同下垫面对土壤吸湿凝结水量的影响，采用称重法研究了毛乌素沙地开发整治研究中心院内臭柏群落、油蒿群落和裸地三种下垫面土壤吸湿凝结水量的变化特征。结果表明：植被可以改变试验点的温湿度，裸露沙地凝结量小于有植物区；臭柏群落形成吸湿凝结水最多，油蒿次之，裸地最少；同一下垫面中的凝结水量，地表以上20cm处的〉10cm处〉地表处。

英文摘要：

In order to discuss the influence of different underlying surfaces on soil condensation water amounts, the observation experiment of soil absorbtion and condensation water were conducted by adopting weighting method at Mu Us Sandland development and research center courtyard, the characteristic changes of three underlying surfaces （Sabina vulgaris community, Artemisia ordosica community, and bare land） were analyzed. The results indicated that the vegetation could change the temperature and humidity of the testing place. The condensation water amounts of bare sand was less than the one of the area where had the plant. In the three underlying surfaces, the amount formed on Sabina vulgaris sample area was the most, the one of Artemisia ordosica was more and the bare sand was the least, At the same sample area, at the three heights the amount formed at 20cm height was the most, the amount at 10cm was more, earth＇s surface was the least.