| 刘钰,蔡林根,R.M.Fernando,L.S.Pereira.作物根区底部土壤水分向上运移通量的计算方法[J].水利学报,2001,32(12):0019-0026 |
| 作物根区底部土壤水分向上运移通量的计算方法 |
| Calculation method of the soil water upword flux at the botton boundary of the root zone |
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| DOI： |
| 中文关键词: 地下水 毛管上升通量 计算方法 水量平衡 |
| 英文关键词: groundwater capillary rise calculation method water balance |
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| 摘要点击次数: 1925 |
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| 中文摘要: |
| 本文用河北雄县试验站的实测资料验证了一维土壤水动力学模型—WAVE模型(Water and Agrochemicals in the Soil and Vadose Environment)，率定了土壤水力学特性参数和作物根系吸水函数。在此基础上，应用该模型模拟不同地下水埋深和不同作物腾发量条件下根区底部向上水分通量的变化，从而得到地下水对根层的补给量与根层土壤储水量的关系。把这一关系用于制定和评价灌溉制度的水量平衡模型当中，提高了模型的适用范围和模拟精度。 |
| 英文摘要: |
| A 1-D soil water dynamic model-WAVE (Vanclooster et al 1994) is calibrated and validated by comparing the simulation results with the field experiment data.The model is used to simulate the upward flux at the bottom boundary of root zone in different conditions of groundwater depth and potential crop evapotranspiration.A semi-empirical relation between the capillary rise to the root zone and the water stored in the root zone is derived.This relation is used to improve the soil water balance model to better consider the groundwater contribution to be applied in the irrigation scheduling studies. |
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