Groundwater response to leakage of surface water through a thick vadose zone in the middle reaches area of Heihe River Basin, in China

Wang, Xu‐Sheng; Ma, Ming; Li, X.; Zhao, Jun; Peng, Dongdong; Zhou, Jiaxin

doi:10.5194/hess-14-639-2010

Cited by 31 publications

(28 citation statements)

References 10 publications

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“…The interaction between groundwater and surface water plays an important role in hydrogeology, hydrology, environmental and water resource management (Wu et al, 2013). It is also significant for water balance studies in most river basins around the world (Wang et al, 2010). Rivers may gain water from aquifers or lose water to aquifers depending on the connectivity between them (Doppler et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

The spatial heterogeneity of riverbed saturated permeability coefficient in the lower reaches of the Heihe River Basin, Northwest China

Zhang

Feng

et al. 2015

Hydrological Processes

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In arid region, direct infiltration from rainfall contributes little to groundwater compared with localized recharge from streams. How to quantify riverbed infiltration to groundwater systems is an important area of research in hydrology. In this study, saturated permeability coefficient of a riverbed in an arid inland river basin located in the northwest of China was obtained by Guelph Permeameter and laboratory analysis methods. The characteristics of riverbed infiltration and its spatial patterns were analysed using geostatistical method and kriging method. The results showed that the saturated permeability coefficient varied from 0.089 to 2.802 m/d, indicating moderate degree of variability. The Guelph Permeameter and laboratory test methods provided consistent estimates of saturated permeability coefficient. There was a strong spatial correlation for Kfs of the riverbed in this study area when Range (A) was less than 0.276°, suggesting that the maximum sampling distance for saturated permeability coefficient of the riverbed was 0.276° under isotropic conditions. The Kfs near the centre of the riverbed was higher than the value near riverbank. The Kfs values decreased in the direction of upstream to downstream in the Heihe River Basin. The riverbed mechanical composition, initial soil water content and bulk density have significant influence up on the riverbed infiltration. Besides, the topographical factors including the width, altitude and distance factors of the riverbed together impacted the riverbed infiltration and the slope of the riverbed and also influenced the riverbed infiltration. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

The spatial heterogeneity of riverbed saturated permeability coefficient in the lower reaches of the Heihe River Basin, Northwest China

Zhang

Feng

et al. 2015

Hydrological Processes

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“…The equations of AquiferFlow are based on the principles of groundwater dynamics; consequently, AquiferFlow can describe water movement not only in the saturated zone but also in the unsaturated zone (Wang et al, 2010). However, the ET simulation in AquiferFlow, as in most existing GWMs, is treated as a sink term for the groundwater system, and the ET calculation depends only on the soil moisture of the top soil layer and the potential ET of the location.…”

Section: Model Developmentmentioning

confidence: 99%

“…If the vadose zone water movement in the two models can be linked and integrated, a water cycle process can be completely simulated. In our study, a GWM called AquiferFlow that can simulate water movement in saturated and unsaturated zones (Wang, 2007;Wang et al, 2010) and an LSM model, SiB2, which is used to simulate the water and energy movement above the ground surface and the soil moisture movement in up to three layers of the subsurface, were chosen as the two models to be coupled. The two models are coupled by replacing the three-layer soil moisture simulation in the SiB2 code by the unsaturated zone water movement simulation of AquiferFlow.…”

Section: Model Developmentmentioning

confidence: 99%

“…The principle of these two models and their coupling scheme are presented in detail in the following. (Wang, 2007;Wang et al, 2010) is a typical numerical GWM in which rectangular grid cells are used to divide the simulation domain and the finite difference method (FDM) is used to solve groundwater movement equations in saturated and unsaturated zones. The main feature of AquiferFlow is that the conceptual model is similar to traditional saturated GWMs, but the Richards equation is fully incorporated to handle unsaturated flow, as follows:…”

Section: Model Developmentmentioning

confidence: 99%

“…In this paper, a coupled model of groundwater flow with a simple biosphere (GWSiB) is developed by coupling a 3-D variably saturated dynamic GWM (AquiferFlow) (Wang, 2007;Wang et al, 2010) with a typical land surface model, the Simple Biosphere Model version 2 (SiB2) (Sellers et al, 1996b). In this coupled-model system, the coupling mode of physically based distributed GWMs is used in the GWSiB model, and the land surface parameterization scheme and the GWM used are different from other studies.…”

Section: Introductionmentioning

confidence: 99%

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Coupling a groundwater model with a land surface model to improve water and energy cycle simulation

Tian

Cheng

et al. 2012

Hydrol. Earth Syst. Sci.

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Abstract. Water and energy cycles interact, making these two processes closely related. Land surface models (LSMs) can describe the water and energy cycles on the land surface, but their description of the subsurface water processes is oversimplified, and lateral groundwater flow is ignored. Groundwater models (GWMs) describe the dynamic movement of the subsurface water well, but they cannot depict the physical mechanisms of the evapotranspiration (ET) process in detail. In this study, a coupled model of groundwater flow with a simple biosphere (GWSiB) is developed based on the full coupling of a typical land surface model (SiB2) and a 3-D variably saturated groundwater model (AquiferFlow). In this coupled model, the infiltration, ET and energy transfer are simulated by SiB2 using the soil moisture results from the groundwater flow model. The infiltration and ET results are applied iteratively to drive the groundwater flow model. After the coupled model is built, a sensitivity test is first performed, and the effect of the groundwater depth and the hydraulic conductivity parameters on the ET are analyzed. The coupled model is then validated using measurements from two stations located in shallow and deep groundwater depth zones. Finally, the coupled model is applied to data from the middle reach of the Heihe River basin in the northwest of China to test the regional simulation capabilities of the model.

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Hydrological Cycle in the Heihe River Basin and Its Implication for Water Resource Management in Endorheic Basins

et al. 2018

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Endorheic basins around the world are suffering from water and ecosystem crisis. To pursue sustainable development, quantifying the hydrological cycle is fundamentally important. However, knowledge gaps exist in how climate change and human activities influence the hydrological cycle in endorheic basins. We used an integrated ecohydrological model, in combination with systematic observations, to analyze the hydrological cycle in the Heihe River Basin, a typical endorheic basin in arid region of China. The water budget was closed for different landscapes, river channel sections, and irrigation districts of the basin from 2001 to 2012. The results showed that climate warming, which has led to greater precipitation, snowmelt, glacier melt, and runoff, is a favorable factor in alleviating water scarcity. Human activities, including ecological water diversion, cropland expansion, and groundwater overexploitation, have both positive and negative effects. The natural oasis ecosystem has been restored considerably, but the overuse of water in midstream and the use of environmental flow for agriculture in downstream have exacerbated the water stress, resulting in unfavorable changes in surface‐ground water interactions and raising concerns regarding how to fairly allocate water resources. Our results suggest that the water resource management in the region should be adjusted to adapt to a changing hydrological cycle, cropland area must be reduced, and the abstraction of groundwater must be controlled. To foster long‐term benefits, water conflicts should be handled from a broad socioeconomic perspective. The findings can provide useful information on endorheic basins to policy makers and stakeholders around the world.

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Groundwater response to leakage of surface water through a thick vadose zone in the middle reaches area of Heihe River Basin, in China

Cited by 31 publications

References 10 publications

The spatial heterogeneity of riverbed saturated permeability coefficient in the lower reaches of the Heihe River Basin, Northwest China

The spatial heterogeneity of riverbed saturated permeability coefficient in the lower reaches of the Heihe River Basin, Northwest China

Coupling a groundwater model with a land surface model to improve water and energy cycle simulation

Hydrological Cycle in the Heihe River Basin and Its Implication for Water Resource Management in Endorheic Basins

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