Sensitivity Analysis of VG Model Parameters under Rainfall Infiltration Using HYDRUS-1D Simulation

BI Biao; QIAN Yun-kai; AI Xian-feng; ZHAO Ting-ning

doi:10.11988/ckyyb.20200446

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Journal of Changjiang River Scientific Research Institute ›› 2021, Vol. 38 ›› Issue (7) : 36-41. DOI: 10.11988/ckyyb.20200446

WATERSOIL CONSERVATION AND ECOLOGICAL RESTORATION

Sensitivity Analysis of VG Model Parameters under Rainfall Infiltration Using HYDRUS-1D Simulation

BI Biao, QIAN Yun-kai, AI Xian-feng, ZHAO Ting-ning

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Abstract

The aim of this study is to quantify the influence of hydraulic parameters of soil on three output variables of HYDRUS-1D. The three parameters include:dynamic distribution of soil moisture in 10 cm layer, cumulative infiltration capacity, and migration distance of wetting front. By individually perturbing the five hydraulic parameters, namely, θ_r, θ_s, K_s, α, and n in the HYDRUS-1D VG model, we examined the sensitivities of these five parameters under rainfall infiltration by using the modified Morris screening method. Results manifested the importance of determining the intervals of parameter sensitivity to simplifying tests process. The sensitivities of model parameters changed with time depending on different output results. Boundary condition is also a crucial factor that affects the model parameter sensitivity. In addition, the sensitivity of each of the five parameters differs with various research objects. In conclusion, the accuracy of highly sensitive parameters and the authenticity of boundary conditions should be ensured.

Key words

hydraulic parameters of soil / rainfall infiltration / sensitivity analysis / migration distance of wetting front / HYDRUS-1D / numerical simulation / single-factor perturbation

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BI Biao, QIAN Yun-kai, AI Xian-feng, ZHAO Ting-ning. Sensitivity Analysis of VG Model Parameters under Rainfall Infiltration Using HYDRUS-1D Simulation[J]. Journal of Changjiang River Scientific Research Institute. 2021, 38(7): 36-41 https://doi.org/10.11988/ckyyb.20200446

References

[1] 芮孝芳.水文学原理[M]. 北京:高等教育出版社, 2013 :76-100.
[2] VAN GENUCHTEN M TH. A Closed-form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils[J]. Soil Science Society of America Journal, 1980, 44(5): 892-898.
[3] SIMANEK J, VAN GENUCHTEN M TH, SEJNA M. A Closed-form Equation Development and Applications of the HYDRUS and STANMOD Software Packages, and Related Codes[J]. Vadose Zone Journal, 2008, 7(2): 587-600.
[4] SIMUNEK J, VAN GENUCHTEN M TH, SEJNA M. HYDRUS: Model Use, Calibration, and Validation[J]. Transactions of the ASABE, 2012, 55(4):1261-1274.
[5] DASH C J, SARANGI A, SINGH D, et al. Prediction of Root Zone Water and Nitrogen Balance in an Irrigated Rice Field Using a Simulation Model[J]. Paddy and Water Environment, 2015, 13(3):281-290.
[6] LI Y, SIMUNEK J, JING L, et al. Evaluation of Water Movement and Water Losses in a Direct-Seeded-Rice Field Experiment Using HYDRUS-1D[J]. Agricultural Water Management, 2014, 142: 38-46.
[7] DE PINHO R E C, DE MIRANDA J H. Evaluation of HYDRUS-1D to Simulate Water and Potassium Transport in Two Laboratory Tropical Soil Colums[J]. Engenharia Agricola, 2014, 34(5):899-911.
[8] 于洋,卫伟,陈利顶,等.黄土丘陵区小流域典型造林整地工程土壤水分特征曲线模拟[J]. 生态学报, 2018, 38(18):6511-6520.
[9] 刘彬彬,刘尧兵,张科峰.黄土丘陵区小流域典型基于HYDRUS-1D的不同质地土壤入渗过程数值模拟[J]. 干旱地区农业研究, 2018, 36(4):140-145.
[10] 李爽,赵相杰,谢云,等.基于土壤理化性质估计土壤水分特征曲线Van Genuchten模型参数[J]. 地理科学, 2018, 38(7):1189-1197.
[11] 李冰冰,王云强,李志.HYDRUS-1D模型模拟渭北旱源深剖面土壤水分的适用性[J]. 应用生态学报, 2019, 30(2):398-404.
[12] MCFARLAND J M. Variance Decomposition for Statistical Quantities of Interest[J]. AIAA Journal, 2015, 12(1): 204-218.
[13] 王志涛,缴锡云,韩红亮,等.土壤垂直一维入渗对VG模型参数的敏感性分析[J]. 河海大学学报(自然科学版), 2013, 41(1):80-84.
[14] 范严伟,赵文举,毕贵权,等.Van Genuchten模型参数变化对土壤入渗特性的影响分析[J]. 中国农村水利水电, 2016(3):52-56.
[15] 刘钢,高志鹏,屈吉鸿,等.河流影响下包气带水力参数对压力水头及溶质运移的影响[J]. 华北水利水电大学学报(自然科学版), 2017, 38(2):72-76.
[16] 霍思远,靳孟贵.Van Genuchten模型参数对降水入渗数值模拟的敏感性[J]. 地球科学, 2017, 42(3):447-452.
[17] 张海阔,姜翠玲,李亮,等.基于HYDRUS-1D模拟的变水头入渗条件下VG模型参数敏感性分析[J]. 河海大学学报(自然科学版), 2019, 47(1):32-40.
[18] SIMUNEK J, VAN GENUCHTEN M T, SEJNA M. The HYDRUS-1D Software Package for Simulating the One-dimensional Movement of Water, Heat, and Multiple Solutes in Variably-saturated Media[R]. Riverside, California: University of California Riverside, 2005: 1-240.
[19] CEN Guo-ping, SHEN Jin, FAN Rong-sheng. Research on Rainfall Pattern of Urban Design Storm[J]. Advances in Water Science, 1998, 9(1): 41-46.
[20] 王彬雁,赵琳娜,巩远发,等.北京降雨过程分型特征及短历时降雨重现期研究[J]. 暴雨灾害, 2015, 34(4):302-308.
[21] MORRIS M D. Factorial Sampling Plans for Preliminary Computational Experiments[J]. Technometrics, 1991, 33(2): 161-174.
[22] 宋晓猛,张建云,占车生,等.水文模型参数敏感性分析方法评述[J]. 水利水电科技进展, 2015, 35 (6):105-112.
[23] 吴光东,许继军,GUPTA H,等.新安江流域abcd水量平衡模型及参数敏感性分析[J]. 长江科学院院报,2019,36(7):23-27,40.