| 土壤－植物－大气复合系统内水热迁移特性 |
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| 引用本文： | 张浙,杨世铭,刘伟. 土壤－植物－大气复合系统内水热迁移特性[J]. 上海交通大学学报, 1996, 0(3) |
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| 作者姓名： | 张浙 杨世铭 刘伟 |
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| 作者单位： | 上海交通大学动力机械工程系，华中理工大学 |
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| 摘 要： | 通过对非饱和土壤内部热、水、气耦合迁移特性，植物根系吸水特性及植物蒸腾的描述，建立了反映土壤－植物－大气复合系统内温度、水分、含气量等的动态变化过程的一般数学模型．作为一个算例，还用该模型对利用地下多孔埋管引入冷凝水来加热与灌溉土壤的效果进行了数值模拟．模拟结果一方面反映了模型的可行性，另一方面亦为植物生长的热物理环境的优化设计提供了依据．
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| 关 键 词： | 土壤；植物；大气；水热迁移；多孔介质；灌溉 |
Water and Heat Transport Properties in Soil-Plant-Atmosphere System |
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| Zhang Zhe, Yang Shimings. Water and Heat Transport Properties in Soil-Plant-Atmosphere System[J]. Journal of Shanghai Jiaotong University, 1996, 0(3) |
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| Authors: | Zhang Zhe Yang Shimings |
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| Abstract: | By describing the coupled transport of heat, water and gas in unsaturated soil, water uptake by plant roots, and transpiration of plants, a general mathematical model has been established to simulate the dynamic transport processes of temperature, water content and air content in the soil-plant-atmosphere system. As an example, the heating and irrigating effects of condenser water carried by subsurface porous pipes have been calculated with this model. The model and method presented in this paper provide a theoretical basis for optimal control of the thermal environment during vegetation period. |
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| Keywords: | soil plant atmosphere water and heat transport porous media irrigation |
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