Soil salt leaching under different irrigation regimes: HYDRUS-1D modelling and analysis
Soil salt leaching under different irrigation regimes: HYDRUS-1D modelling and analysis
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不同灌溉方式下的土壤盐分淋溶：HYDRUS-1D 建模与分析
DOI：
10.1007/s40333-013-0176-9
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发表时间：
2014-02
影响因子：
3
通讯作者：
Huang, JieSheng
中科院分区：
文献类型：
--
作者：
Zeng, WenZhi;Xu, Chi;Wu, JingWei;Huang, JieSheng
在内蒙古河套灌区进行了田间灌溉试验，研究了灌溉制度对土壤盐分淋溶的影响。这些数据被用来校准和验证HYDRUS-1D模型。结果表明，该模型能较准确地模拟土壤剖面水盐动态。HYDRUS-1D模型被用来模拟15种不同的灌溉情景。模拟结果表明，灌水量对土壤贮水量的影响不显著，但灌水量的增加会加速盐分的淋溶。但当灌水量大于20 cm时，这种加速作用不明显。与单灌相比，间歇灌溉对增加土壤贮水量和盐分淋溶有更好的效果，但灌水次数和间隔时间过长对盐分淋溶没有促进作用。此外，我们发现，20厘米的灌溉制度，灌溉两次，在1-d的间隔，可能会显着增加盐分淋溶在耕层和降低深层渗漏和地下水污染的风险。
Field irrigation experiments were conducted in the Hetao Irrigation District of Inner Mongolia, China, to study the effects of irrigation regimes on salt leaching in the soil profile. The data were used to calibrate and validate the HYDRUS-1D model. The results demonstrated that the model can accurately simulate the water and salt dynamics in the soil profile. The HYDRUS-1D model was then used to simulate 15 distinct irrigation scenarios. The results of the simulation indicated that irrigation amount did not have a significant effect on soil water storage but that increases in irrigation amount could accelerate salt leaching. However, when the irrigation amount was larger than 20 cm, the acceleration was not obvious. Compared with irrigating only once, intermittent irrigation had a better effect on increasing soil water storage and salt leaching, but excessive irrigation times and intervals did not improve salt leaching. In addition, we found that the irrigation regime of 20 cm, irrigated twice at 1-d intervals, might significantly increase salt leaching in the plough layer and decrease the risks of deep seepage and groundwater contamination.
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影响因子：
6.4
作者：
Schaap, MG;Leij, FJ;van Genuchten, MT
通讯作者：
van Genuchten, MT
影响因子：
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作者：
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通讯作者：
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影响因子：
3
作者：
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通讯作者：
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作者：
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通讯作者：
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DOI：
10.1016/j.jweia.2011.06.007
发表时间：
2011-08-01
影响因子：
4.8
作者：
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通讯作者：
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