吸湿水
又称紧束缚水。与气态水接触时，受分子引力作用，土粒表面所吸附的水分。水分子在土粒表面呈严格的定向排列，水膜厚度不超过4～5mm。水分被吸附时放出热量（这种热称为吸湿热或湿润热）。吸湿水的含量随土壤空气湿度增加和土壤固体颗粒的减小而增大。吸湿水所受吸力达数十万到一万个大气压。具有密度大、滞性高、热容量小、不能溶解电解质等性质。吸湿水只有蒸发变成气态水后才能移动。不能为一般植物所利用。
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contributed at 2011-12-23
Classification(s)
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Earth System(in Chinese) Soil Science
Detailed Description
| Chinese |
|---|
| Name | 吸湿水 hygroscopic water |
| English |
|---|
| Description | 又称紧束缚水。与气态水接触时，受分子引力作用，土粒表面所吸附的水分。水分子在土粒表面呈严格的定向排列，水膜厚度不超过4～5mm。水分被吸附时放出热量（这种热称为吸湿热或湿润热）。吸湿水的含量随土壤空气湿度增加和土壤固体颗粒的减小而增大。吸湿水所受吸力达数十万到一万个大气压。具有密度大、滞性高、热容量小、不能溶解电解质等性质。吸湿水只有蒸发变成气态水后才能移动。不能为一般植物所利用。 |
How to Cite
NNU_Group (2011). 吸湿水, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/c19b312c-aa66-4c12-bce5-2a938e34409d
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