| 黑河高山草甸冻土带水热传输过程 |
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| 引用本文： | 阳勇,陈仁升,吉喜斌,卿文武,刘俊峰,韩春坛.黑河高山草甸冻土带水热传输过程[J].水科学进展,2010,21(1):30-35. |
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| 作者姓名： | 阳勇 陈仁升 吉喜斌 卿文武 刘俊峰 韩春坛 |
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| 作者单位： | 1.中国科学院寒区旱区环境与工程研究所黑河上游生态-水文试验研究站, 甘肃, 兰州, 730000; |
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| 基金项目： | 国家自然科学基金资助项目，中国科学院知识创新工程重要方向性项目，国家重点基础研究发展计划(973)资助项目 |
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| 摘 要： | 以黑河源区高山草甸冻土带的基本气象参数、植被参数和土壤水热性质参数为输入条件,利用CoupModel模型计算了试验点两个完整年度日尺度上的各种基本水热状况,计算结果较符合实测值(7层地温和土壤液态含水量平均R2分别为0.95和0.83).利用模型输出的土壤热通量和土壤水迁移分析了试验点季节性冻土区的水热传输过程:在土壤层开始冻结期,下层土壤液态水向冻结锋面集结,集结期向上的地热通量急剧增加;在冻结期,土壤热传导主要与上下层的土壤温度有关,土壤水迁移基本处于零通量状态;在融化期,在融化锋面未出现液态水分集结现象,融化层土壤水热传输过程迅速改变并与非冻结土壤一致,向下的地热通量急剧增加.
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| 关 键 词： | 黑河源区 高山草甸 冻土水文 水热传输 CoupModel模型 全球变暖 |
| 收稿时间： | 2008-12-09 |
Heat and water transfer processes on alpine meadow frozen grounds of Heihe mountainous in Northwest China |
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| YANG Yong,CHEN Ren-sheng,JI Xi-bin,QING Wen-wu,LIU Jun-feng,HAN Chun-tan.Heat and water transfer processes on alpine meadow frozen grounds of Heihe mountainous in Northwest China[J].Advances in Water Science,2010,21(1):30-35. |
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| Authors: | YANG Yong CHEN Ren-sheng JI Xi-bin QING Wen-wu LIU Jun-feng HAN Chun-tan |
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| Affiliation: | 1.Heihe Upstream Watershed Ecology-Hydrology Experimental Research Station, Cold and Arid Region Environment and Engineering Research Institute, CAS, Lanzhou 730000, China;2.Key Laboratory of Ecohydrology and Integrated River Basin Management, CAS, Lanzhou 730000, China |
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| Abstract: | The hydrological process in frozen soil regions is very intensive to global warming.The coupled heat and mass transfer model for soil-plant-atmosphere system(CoupModel) is applied in the headwater region of the Heihe River,with an alpine meadow frozen ground landscape.The observed meteorological forcing and soil and vegetation properties are used in the CoupModel application for the period from September 10,2005 to September 10,2007.A 24-h time step is used in the model simulation.The results show that the ... |
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| Keywords: | headwater region of the Heihe River alpine meadow hydrological processes in frozen soil regions water and heat transfer processes CoupModel global warming |
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