Controls of soil hydraulic characteristics on modeling groundwater recharge under different climatic conditions

被引:33
|
作者
Wang, Tiejun [1 ]
Franz, Trenton E. [1 ]
Zlotnik, Vitaly A. [2 ]
机构
[1] Univ Nebraska, Sch Nat Resources, Lincoln, NE 68583 USA
[2] Univ Nebraska, Dept Earth & Atmospher Sci, Lincoln, NE 68588 USA
关键词
Groundwater recharge; Climatic conditions; Vadose zone model; Soil hydraulic characteristics; CONDUCTIVITY; EVAPOTRANSPIRATION; DISTRIBUTIONS; PARAMETERS; EQUATION; IMPACTS;
D O I
10.1016/j.jhydrol.2014.12.040
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
To meet the challenge of estimating spatially varying groundwater recharge (GR), increasing attention has been given to the use of vadose zone models (VZMs). However, the application of this approach is usually constrained by the lack of field soil hydraulic characteristics (SHCs) required by VZMs. To tackle this issue, SHCs based on the van Genuchten or Brooks-Corey model are generally estimated by pedotransfer functions or taken from texture based class averages. With the increasing use of this method, it is important to elucidate the controls of SHCs on computing GR mostly due to the high nonlinearity of the models. In this study, it is hypothesized that the nonlinear controls of SHCs on computing GR would vary with climatic conditions. To test this hypothesis, a widely used VZM along with two SHCs datasets for sand and loamy sand is used to compute GR at four sites in the continental Unites States with a significant gradient of precipitation (P). The simulation results show that the distribution patterns of mean annual GR ratios ((GR) over bar/(P) over bar, where (GR) over bar and (P) over bar are mean annual GR and P, respectively) vary considerably across the sites, largely depending on soil texture and climatic conditions at each site. It is found that (GR) over bar/(P) over bar is mainly controlled by the shape factor n in the van Genuchten model and the nonlinear effect of n on (GR) over bar/(P) over bar varies with climatic conditions. Specifically, for both soil textures, the variability in (GR) over bar/(P) over bar is smallest at the Andrews Forest with the highest (P) over barP (191.3 cm/year) and GR/P is least sensitive to n; whereas, the variability in (GR) over bar/(P) over bar at the Konza Prairie ((P) over bar = 84.2 cm/year) is the largest and (GR) over bar/(P) over bar is most sensitive to n. With further decreasing P, the nonlinear effect of n weakens at the Barta Brothers ((P) over bar = 57.3 cm/year) and Sevilleta ((P) over bar = 203 cm/year), leading to smaller GR/P variability at those two sites than at the Konza Prairie. The results also reveal that (GR) over bar/(P) over bar in finer soils with smaller n values decreases more rapidly with decreasing P. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:470 / 481
页数:12
相关论文
共 50 条
  • [41] Modeling soil moisture processes and recharge under a melting snowpack
    Flint, Alan L.
    Flint, Lorraine E.
    Dettinger, Michael D.
    VADOSE ZONE JOURNAL, 2008, 7 (01) : 350 - 357
  • [42] An empirical approach simulating evapotranspiration from groundwater under different soil water conditions
    Liu, Tiegang
    Luo, Yi
    ENVIRONMENTAL EARTH SCIENCES, 2012, 67 (05) : 1345 - 1355
  • [43] An empirical approach simulating evapotranspiration from groundwater under different soil water conditions
    Tiegang Liu
    Yi Luo
    Environmental Earth Sciences, 2012, 67 : 1345 - 1355
  • [44] Characteristics and controls of variability in soil moisture and groundwater in a headwater catchment
    McMillan, H. K.
    Srinivasan, M. S.
    HYDROLOGY AND EARTH SYSTEM SCIENCES, 2015, 19 (04) : 1767 - 1786
  • [45] Microbial activities in soil IV Microflora of different zonal soil types developed under similar climatic conditions
    Vandecaveye, SC
    Katznelson, H
    SOIL SCIENCE, 1938, 46 (01) : 57 - 74
  • [46] Research on Characteristics of Soil and Water Loss under Different Slope Conditions
    Wang, Kun
    Cong, Xin
    Xu, Jing
    Xu, Zhenghe
    PROCEEDINGS OF THE 2017 6TH INTERNATIONAL CONFERENCE ON ENERGY, ENVIRONMENT AND SUSTAINABLE DEVELOPMENT (ICEESD 2017), 2017, 129 : 434 - 438
  • [47] Effects of different groundwater depths on the distribution characteristics of soil-Tamarix water contents and salinity under saline mineralization conditions
    Xia, Jiangbao
    Zhang, Shuyong
    Zhao, Ximei
    Liu, Junhua
    Chen, Yinping
    CATENA, 2016, 142 : 166 - 176
  • [48] Influence paradigms of soil moisture on land surface energy partitioning under different climatic conditions
    Chen, Xiao
    Pan, Zhihua
    Huang, Binxiang
    Liang, Ju
    Wang, Jialin
    Zhang, Ziyuan
    Jiang, Kang
    Huang, Na
    Han, Guolin
    Long, Buju
    Zhang, Zhenzhen
    Men, Jingyu
    Gao, Riping
    Cai, Linlin
    Wu, Yao
    Huang, Zhefan
    SCIENCE OF THE TOTAL ENVIRONMENT, 2024, 916
  • [49] Sensitivity of soil moisture initialization for decadal predictions under different regional climatic conditions in Europe
    Khodayar, S.
    Sehlinger, A.
    Feldmann, H.
    Kottmeier, Ch
    INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2015, 35 (08) : 1899 - 1915
  • [50] Simulation and prognosis of the impacts of climate changes on groundwater recharge under local conditions
    Hasan, Issa
    Sallwey, Jana
    Haferkorn, Ulrike
    Graeber, Peter-Wolfgang
    MODELS - REPOSITORIES OF KNOWLEDGE, 2012, 355 : 306 - 312