Lagging Infiltration Recharge in South Margin of Mu Us Sandy Land and Parameter Sensitivity Analysis of Model

doi:10.13961/j.cnki.stbctb.2019.02.011

Home > Archive>Volume 39, Issue 2, 2019 >68-75. DOI:10.13961/j.cnki.stbctb.2019.02.011

Lagging Infiltration Recharge in South Margin of Mu Us Sandy Land and Parameter Sensitivity Analysis of Model
DOI:
                        10.13961/j.cnki.stbctb.2019.02.011
                    
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                        Wang KaiWang Kai
School of Environmental Science and Engineering, Changan University, Xian, Shaanxi 710054, China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Regions of Ministry of Education, Xian, Shaanxi 710054, China;Engineering Research Center of Groundwater and Eco-environment of Shaanxi Province, Xian, Shaanxi 710054, China
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Yang ZeyuanYang Zeyuan
School of Environmental Science and Engineering, Changan University, Xian, Shaanxi 710054, China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Regions of Ministry of Education, Xian, Shaanxi 710054, China;Engineering Research Center of Groundwater and Eco-environment of Shaanxi Province, Xian, Shaanxi 710054, China
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Yuan YueYuan Yue
School of Environmental Science and Engineering, Changan University, Xian, Shaanxi 710054, China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Regions of Ministry of Education, Xian, Shaanxi 710054, China;Engineering Research Center of Groundwater and Eco-environment of Shaanxi Province, Xian, Shaanxi 710054, China
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Chen ZhijunChen Zhijun
School of Environmental Science and Engineering, Changan University, Xian, Shaanxi 710054, China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Regions of Ministry of Education, Xian, Shaanxi 710054, China;Engineering Research Center of Groundwater and Eco-environment of Shaanxi Province, Xian, Shaanxi 710054, China
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Abstract:

[Objective] The lagging infiltration recharge in south margin of Mu Us sandy land and parameter sensitivity of numerical model were studied in order to provide scientific basis for rational exploitation and utilization of groundwater resources and protection of ecological environment in this area.[Methods] Lagging infiltration recharge was analyzed based on field monitoring data, and sensitivity analysis of numerical model parameters was conducted using ratio of variation(ROV).[Results] The response depth of water content to the precipitation was 3~10 cm in small rain scenario, and 30~60 cm, 60~90 cm, more than 90 cm in middle, heavy and storm rain scenarios. The groundwater recharge was approximately 4~11 h lagged. Sensitivity analysis showed that saturated water content (θ_s) was the most sensitive parameter to the bottom flux.[Conclusion] The response depth of water content are linearly correlated with the precipitation and the groundwater recharge lag time has a positive correlation with θ_s.

Key words:precipitation infiltration lag;numerical model;parameter sensibility;shallow groundwater area;Mu Us sandy land

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王锴,杨泽元,袁悦,陈志军.毛乌素沙地南缘降水入渗滞后补给与模型参数敏感性分析[J].水土保持通报英文版,2019,39(2):68-75

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Received:November 15,2018
Revised:December 12,2018
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Online: May 10,2019
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