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Yali Cui
School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China

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Journal article
Published: 20 July 2021 in Water
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The hydrochemistry and quality of local shallow groundwater was assessed within the Xinzhou basin in Shanxi, North China. Piper diagrams, correlation analysis, principal component analysis, chloro-alkaline indices, ion proportion diagrams, and Gibbs diagrams were used to reveal the hydrochemical characteristics and evolution mechanisms of groundwater. Besides, two indicators of sodium adsorption ratio and soluble sodium percentage, USSL and Wilcox diagrams, and water quality index models were used to evaluate the groundwater quality for irrigation and drinking. In general, groundwater in most areas of the basin is fresh water with total dissolved solid lower than 1000 mg/L. But there are salt water in some parts of the southern basin, with total dissolved solid higher than 1000 mg/L, due to industrial and domestic pollution. The hydrochemical facies of groundwater in most areas are HCO3-Ca and mixed HCO3-Ca·Mg·Na types, while it is HCO3·SO4·Cl-Na type in a small part of the basin. Nitrate pollution widely occurred in the basin because of the use of nitrogenous fertilizers. The dominant mechanism controlling the evolution of groundwater chemistry compositions was the weathering of rock minerals. It mainly reflected in the dissolution of carbonate minerals. And the carbonate dissolution is the major origins of HCO3, Ca2+, and Mg2+ in groundwater. However, Na-Ca exchange is the important source of Na+. Shallow groundwater was suitable for irrigation and drinking except for some southern parts of the basin. These results will be helpful for the protection and efficient management of groundwater in the Xinzhou basin.

ACS Style

Guanyin Shuai; Jingli Shao; Yali Cui; Qiulan Zhang; Yuntong Guo. Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in the Xinzhou Basin, Shanxi, North China. Water 2021, 13, 1993 .

AMA Style

Guanyin Shuai, Jingli Shao, Yali Cui, Qiulan Zhang, Yuntong Guo. Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in the Xinzhou Basin, Shanxi, North China. Water. 2021; 13 (14):1993.

Chicago/Turabian Style

Guanyin Shuai; Jingli Shao; Yali Cui; Qiulan Zhang; Yuntong Guo. 2021. "Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in the Xinzhou Basin, Shanxi, North China." Water 13, no. 14: 1993.

Journal article
Published: 22 April 2021 in Sustainability
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Qingtu Lake is located between Tengger Desert and Badain Jilin Desert, Gansu Province, Northwest China. It is the terminal lake of Shiyang River. In recent years, Qingtu lake has maintained a certain area of water surface and vegetation by artificial water conveyance. It is of great significance in preventing the convergence of the two deserts and restraining the trend of ecological deterioration of Shiyang River Basin. The relationship between the water surface area and the ecological water conveyance have not been thoroughly investigated. This study analyzed the spatial and temporal distribution of water surface area of Qingtu Lake and surrounding reeds by interpreting remote sensing data; the change of water surface area under the influence of meteorological factors and water conveyance by linear regression; the water conveyance to maintain current water surface area by water balance method, as well as the reasonable ecological water delivery in high flow year, normal flow year and low flow year by the means of analyzing the upstream inflow and water consumption in Minqin Basin. The results showed that there is a significant correlation between the water surface area of Qingtu Lake, evaporation and ecological water conveyance, and the minimum and maximum water surface areas generally appear before and after water delivery, indicating that the ecological water delivery and evaporation are the two main factors affecting the water surface area change of Qingtu Lake. The result calculated by linear regression indicated that the ecological water delivery volume to maintain current water surface area of Qingtu Lake is 3.146 × 107 m3/yr, while the value was 3.136 × 107 m3/yr calculated by water balance method. These two results are similar and can be verified with each other. Reasonable ecological water conveyance of Qingtu Lake in high flow year, normal flow year and low flow years were 4 × 107 m3/yr, 3.2 × 107 m3/yr and 2.3 × 107 m3/yr, respectively.

ACS Style

Yuntong Guo; Jingli Shao; Qiulan Zhang; Yali Cui. Relationship between Water Surface Area of Qingtu Lake and Ecological Water Delivery: A Case Study in Northwest China. Sustainability 2021, 13, 4684 .

AMA Style

Yuntong Guo, Jingli Shao, Qiulan Zhang, Yali Cui. Relationship between Water Surface Area of Qingtu Lake and Ecological Water Delivery: A Case Study in Northwest China. Sustainability. 2021; 13 (9):4684.

Chicago/Turabian Style

Yuntong Guo; Jingli Shao; Qiulan Zhang; Yali Cui. 2021. "Relationship between Water Surface Area of Qingtu Lake and Ecological Water Delivery: A Case Study in Northwest China." Sustainability 13, no. 9: 4684.

Journal article
Published: 12 November 2020 in Water
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The human activities and urbanization process have changed the underlying surface of urban areas, which would affect the recharge of groundwater through rainfall infiltration and may further influence the groundwater environment. Accordingly, it is imperative to investigate the variation of hydrological cycle under the condition of underlying surface change. Based on the high-precision remote sensing data of 2000, 2005, 2010 and 2015, and Soil and Water Assessment Tool (SWAT) model, this work firstly studied the land use change and the corresponding changes in runoff generation mechanism and rainfall infiltration coefficient in Su-Mi-Huai area, Beijing, China. Meanwhile, SWAT-MODFLOW semi-loose coupling model was applied to analyze the water balance in the study area in typical hydrological years. The results showed that the area of the construction land (urban and rural residential land) increased by 1.04 times from 2000 to 2015, which is mainly attributed to the conversion of cultivated land to construction land in the plain area. This change caused the runoff in the area to increase by 7 × 106 m3, the runoff coefficient increased by 17.9%, and the precipitation infiltration coefficient was less than the empirical value determined by lithology. Compared with 2000, the average annual precipitation infiltration coefficient in 2018 decreased by 6.5%. Under the influence of urbanization process, the maximum reduction rate of precipitation infiltration recharge is up to 38%. The study investigated the response of surface runoff and precipitation infiltration recharge to land use change, which can provide helps for water resources managers to coordinate the relationship between land use change and rational water resources planning.

ACS Style

Linlin Zhang; Caiyuan Wang; Guixing Liang; Yali Cui; Qiulan Zhang. Influence of Land Use Change on Hydrological Cycle: Application of SWAT to Su-Mi-Huai Area in Beijing, China. Water 2020, 12, 3164 .

AMA Style

Linlin Zhang, Caiyuan Wang, Guixing Liang, Yali Cui, Qiulan Zhang. Influence of Land Use Change on Hydrological Cycle: Application of SWAT to Su-Mi-Huai Area in Beijing, China. Water. 2020; 12 (11):3164.

Chicago/Turabian Style

Linlin Zhang; Caiyuan Wang; Guixing Liang; Yali Cui; Qiulan Zhang. 2020. "Influence of Land Use Change on Hydrological Cycle: Application of SWAT to Su-Mi-Huai Area in Beijing, China." Water 12, no. 11: 3164.

Journal article
Published: 21 October 2020 in Water
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The inefficient use of single energy and cold accumulation in the shallow geothermal field seriously affect the efficient operation of the ground source heat pump system (GSHPS). The operation of solar-assisted GSHPS can effectively solve the above problems. In this paper, a shallow geothermal utilization project in Nan cha Village, Ping Gu District of Beijing, is chosen as the study area. A three-dimensional numerical model of groundwater flow and heat transfer considering ambient temperature and backfill materials is established, and the level of model integration and validation are novel features of this paper. The thermal response test data in summer and winter conditions are used to validate the model. The results show that increasing hydraulic gradient has a positive impact on the heat exchange. The mixture of sand and barite powder is recognized as a more efficient and economical backfill material. The changes of thermal influence radius, heat balance, and shallow geothermal field are simulated and analyzed by three schemes. It is demonstrated that the thermal influence radius is 5 m, 3.9 m and 3.9 m for Scheme 1, Scheme 2 and Scheme 3, respectively. The ground temperature is always lower than the initial formation temperature in Scheme 1 and Scheme 2; however, under Scheme 3 it is higher than the initial values. The closer the hole wall is, the larger the difference between the initial formation temperature and the ground temperature, and vice versa. The thermal equilibrium of Scheme 1, Scheme 2 and Scheme 3 is −728 × 106 KJ, −269 × 106 KJ and +514 × 106 KJ. Through comprehensive analysis of the above three factors, Scheme 3 is regarded as the most reasonable scheme for a solar system to assist GSHPS.

ACS Style

Yaobin Zhang; Jia Zheng; Aihua Liu; Qiulan Zhang; Jingli Shao; Yali Cui. Numerical Simulation of Shallow Geothermal Field in Operating of a Ground Source Heat Pump System—A Case Study in Nan Cha Village, Ping Gu District, Beijing. Water 2020, 12, 2938 .

AMA Style

Yaobin Zhang, Jia Zheng, Aihua Liu, Qiulan Zhang, Jingli Shao, Yali Cui. Numerical Simulation of Shallow Geothermal Field in Operating of a Ground Source Heat Pump System—A Case Study in Nan Cha Village, Ping Gu District, Beijing. Water. 2020; 12 (10):2938.

Chicago/Turabian Style

Yaobin Zhang; Jia Zheng; Aihua Liu; Qiulan Zhang; Jingli Shao; Yali Cui. 2020. "Numerical Simulation of Shallow Geothermal Field in Operating of a Ground Source Heat Pump System—A Case Study in Nan Cha Village, Ping Gu District, Beijing." Water 12, no. 10: 2938.

Journal article
Published: 17 July 2020 in Sustainability
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The Chinese government hopes to implement groundwater table control to realize the sustainable utilization of groundwater resources based on controlling the current groundwater exploitation amount. In this study, a method to determine the control index of the groundwater table is proposed. In the method, the reasonable relationship between the groundwater table and groundwater exploitation amount is ensured using the groundwater numerical simulation model. The operability of the index determination is improved using a surrogate numerical model, and the annual hydrological dynamic is simplified to three scenarios of dry, flat, and wet. To verify this method, the Minqin Basin in Northwest China was chosen as a typical study area. It is assumed that the control index of groundwater exploitation in 2020 is 85,000103m3. Then, the preset annual water table index is calculated as [−0.70, 0.62, 1.13, −1.25, 1.36, 3.09] m [−0.77, 0.53, 1.05, −1.33, 1.27, 2.96] m, and [−0.83, 0.46, 0.99, −1.40, 1.20, 2.85] m for the chosen six monitoring wells, varying over the years with wet, flat, and dry scenarios. This method can ensure high precision, operability, and dynamic management when determining the control index of the groundwater table and satisfy the demand of managers.

ACS Style

Xiaowei Wang; Jingli Shao; Yali Cui; Qiulan Zhang. Application of a Surrogate Model for a Groundwater Numerical Simulation Model for Determination of the Annual Control Index of the Groundwater Table in China. Sustainability 2020, 12, 5752 .

AMA Style

Xiaowei Wang, Jingli Shao, Yali Cui, Qiulan Zhang. Application of a Surrogate Model for a Groundwater Numerical Simulation Model for Determination of the Annual Control Index of the Groundwater Table in China. Sustainability. 2020; 12 (14):5752.

Chicago/Turabian Style

Xiaowei Wang; Jingli Shao; Yali Cui; Qiulan Zhang. 2020. "Application of a Surrogate Model for a Groundwater Numerical Simulation Model for Determination of the Annual Control Index of the Groundwater Table in China." Sustainability 12, no. 14: 5752.

Journal article
Published: 13 September 2019 in Sustainability
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In the karst area of southern China, karst water is important for supporting the sustainable production and home living for the local residents. Consequently, it is of significance to fully understand the water cycle, so as to make full use of water resources. In karst areas, epikarst and conduits are developed, participating in the hydrological cycle actively. For conventional lumped hydrologic models, it is difficult to simulate the hydrological cycle accurately. These models neglect to consider the variation of underlying surface and weather change. Meanwhile, for the original distributed hydrological model, the existence of epikarst and underground conduits as well as inadequate data information also make it difficult to achieve accurate simulation. To this end, the framework combining the advantages of lumped model–reservoir model and distributed hydrologic model–Soil and Water Assessment Tool (SWAT) model is established to simulate the water cycle efficiently in a karst area. Xianghualing karst watershed in southern China was selected as the study area and the improved SWAT model was used to simulate the water cycle. Results show that the indicators of ENS and R2 in the calibration and verification periods are both above 0.8, which is evidently improved in comparison with the original model. The improved SWAT model is verified to have better efficiency in describing the hydrological cycle in a typical karst area.

ACS Style

Yufeng Wang; Jingli Shao; Chuntian Su; Yali Cui; Qiulan Zhang. The Application of Improved SWAT Model to Hydrological Cycle Study in Karst Area of South China. Sustainability 2019, 11, 5024 .

AMA Style

Yufeng Wang, Jingli Shao, Chuntian Su, Yali Cui, Qiulan Zhang. The Application of Improved SWAT Model to Hydrological Cycle Study in Karst Area of South China. Sustainability. 2019; 11 (18):5024.

Chicago/Turabian Style

Yufeng Wang; Jingli Shao; Chuntian Su; Yali Cui; Qiulan Zhang. 2019. "The Application of Improved SWAT Model to Hydrological Cycle Study in Karst Area of South China." Sustainability 11, no. 18: 5024.

Journal article
Published: 19 April 2019 in Water
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The characteristics of groundwater systems are highly complex. It will take substantial computational resources and running time to optimize a groundwater numerical simulation model. In this study, in order to realize the coupling of simulation and optimization models, the improved backpropagation (BP) neural network was used as a surrogate model of a groundwater numerical simulation; the improved BP neural network was trained with the groundwater level drawdown–pumping volume data output of the simulation model. The method was applied to the water resource optimal allocation in the near future of Wenshang County, Shandong Provence of China. The results show that the water level drawdown output of the improved BP neural network model fits the results of the simulation model well, showing that the improved BP neural network can effectively be the surrogate of a groundwater numerical simulation to be embedded in an optimization model. The improved simulation and optimization technique can make full use of water resources in the whole area. Under an assurance rate of 50%, both water shortage and water shortage rate reduced to zero in the whole area. Under an assurance rate of 75%, water shortage and water shortage rate reduced to about 10% of the conventional scheme, which dramatically improves the comprehensive benefit of the whole area.

ACS Style

Yufeng Wang; Yali Cui; Jingli Shao; Qiulan Zhang; Wang; Cui; Shao. Study on Optimal Allocation of Water Resources Based on Surrogate Model of Groundwater Numerical Simulation. Water 2019, 11, 831 .

AMA Style

Yufeng Wang, Yali Cui, Jingli Shao, Qiulan Zhang, Wang, Cui, Shao. Study on Optimal Allocation of Water Resources Based on Surrogate Model of Groundwater Numerical Simulation. Water. 2019; 11 (4):831.

Chicago/Turabian Style

Yufeng Wang; Yali Cui; Jingli Shao; Qiulan Zhang; Wang; Cui; Shao. 2019. "Study on Optimal Allocation of Water Resources Based on Surrogate Model of Groundwater Numerical Simulation." Water 11, no. 4: 831.

Journal article
Published: 18 October 2017 in Water
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The usage of reclaimed water can efficiently mitigate water crises, but it may cause groundwater pollution. To clearly understand the potential influences of long-term reclaimed water usage, a total of 91 samples of shallow and deep groundwater were collected from a typical reclaimed water use area during the dry and rainy seasons. The results suggest both shallow and deep groundwater are mainly naturally alkaline freshwater, which are composed mainly of Ca-HCO3, followed by mixed types such as Ca-Na-HCO3 and Ca-Mg-HCO3. A seasonal desalination trend was observed in both shallow and deep aquifers due to dilution effects in the rainy season. Groundwater chemical compositions in both shallow and deep aquifers are still dominantly controlled by natural processes such as silicate weathering, minerals dissolution and cation exchange. Human activities are also the factors influencing groundwater chemistry. Urbanization has been found responsible for the deterioration of groundwater quality, especially in shallow aquifers, because of the relative thin aquitard. Reclaimed water usage for agricultural irrigation and landscape purposes has nearly no influences on groundwater quality in rural areas due to thick aquitards. Therefore, reclaimed water usage should be encouraged in arid and semiarid areas with proper hydrogeological condition.

ACS Style

Yong Xiao; Xiaomin Gu; Shiyang Yin; Xingyao Pan; Jingli Shao; Yali Cui. Investigation of Geochemical Characteristics and Controlling Processes of Groundwater in a Typical Long-Term Reclaimed Water Use Area. Water 2017, 9, 800 .

AMA Style

Yong Xiao, Xiaomin Gu, Shiyang Yin, Xingyao Pan, Jingli Shao, Yali Cui. Investigation of Geochemical Characteristics and Controlling Processes of Groundwater in a Typical Long-Term Reclaimed Water Use Area. Water. 2017; 9 (10):800.

Chicago/Turabian Style

Yong Xiao; Xiaomin Gu; Shiyang Yin; Xingyao Pan; Jingli Shao; Yali Cui. 2017. "Investigation of Geochemical Characteristics and Controlling Processes of Groundwater in a Typical Long-Term Reclaimed Water Use Area." Water 9, no. 10: 800.

Journal article
Published: 19 January 2017 in Water
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In this work, the hydrogeochemistry and environmental isotopic compositions of thermal and mineral springs in Arxan, northeastern China, were used to assess the genesis of the thermal system hosted by deep-seated faults. The reservoir temperature was calculated using the mineral saturation index and geothermometers. According to isotopic analysis, the spring water was of meteoric origin. Sixteen springs in the Arxan geothermal system with outlet temperatures ranging from 10.9 to 41.0 °C were investigated. The water samples can be classified into four groups by using a Piper diagram. The aquifer in which the Group I and Group III samples were obtained was a shallow cold aquifer of the Jurassic system, which is related to the local groundwater system and contains HCO3–Ca·Na groundwater. The Group II and Group IV samples were recharged by deeply circulating meteoric water with HCO3–Na and HCO3·SO4–Na·Ca groundwater, respectively. The springs rise from the deep basement faults. The estimated thermal reservoir temperature is 50.9–68.8 °C, and the proportion of shallow cold water ranges from 54% to 87%. A conceptual flow model based on hydrogeochemical results and hydrogeological features is given to describe the geothermal system of the Arxan springs.

ACS Style

Xiaomin Gu; Qiulan Zhang; Yali Cui; Jingli Shao; Yong Xiao; Peng Zhang; Jinxing Liu. Hydrogeochemistry and Genesis Analysis of Thermal and Mineral Springs in Arxan, Northeastern China. Water 2017, 9, 61 .

AMA Style

Xiaomin Gu, Qiulan Zhang, Yali Cui, Jingli Shao, Yong Xiao, Peng Zhang, Jinxing Liu. Hydrogeochemistry and Genesis Analysis of Thermal and Mineral Springs in Arxan, Northeastern China. Water. 2017; 9 (1):61.

Chicago/Turabian Style

Xiaomin Gu; Qiulan Zhang; Yali Cui; Jingli Shao; Yong Xiao; Peng Zhang; Jinxing Liu. 2017. "Hydrogeochemistry and Genesis Analysis of Thermal and Mineral Springs in Arxan, Northeastern China." Water 9, no. 1: 61.

Journal article
Published: 11 April 2016 in SpringerPlus
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Based on the geo-statistical theory and ArcGIS geo-statistical module, datas of 30 groundwater level observation wells were used to estimate the decline of groundwater level in Beijing piedmont. Seven different interpolation methods (inverse distance weighted interpolation, global polynomial interpolation, local polynomial interpolation, tension spline interpolation, ordinary Kriging interpolation, simple Kriging interpolation and universal Kriging interpolation) were used for interpolating groundwater level between 2001 and 2013. Cross-validation, absolute error and coefficient of determination (R(2)) was applied to evaluate the accuracy of different methods. The result shows that simple Kriging method gave the best fit. The analysis of spatial and temporal variability suggest that the nugget effects from 2001 to 2013 were increasing, which means the spatial correlation weakened gradually under the influence of human activities. The spatial variability in the middle areas of the alluvial-proluvial fan is relatively higher than area in top and bottom. Since the changes of the land use, groundwater level also has a temporal variation, the average decline rate of groundwater level between 2007 and 2013 increases compared with 2001-2006. Urban development and population growth cause over-exploitation of residential and industrial areas. The decline rate of the groundwater level in residential, industrial and river areas is relatively high, while the decreasing of farmland area and development of water-saving irrigation reduce the quantity of water using by agriculture and decline rate of groundwater level in agricultural area is not significant.

ACS Style

Yong Xiao; Xiaomin Gu; Shiyang Yin; Jingli Shao; Yali Cui; Qiulan Zhang; Yong Niu. Geostatistical interpolation model selection based on ArcGIS and spatio-temporal variability analysis of groundwater level in piedmont plains, northwest China. SpringerPlus 2016, 5, 425 .

AMA Style

Yong Xiao, Xiaomin Gu, Shiyang Yin, Jingli Shao, Yali Cui, Qiulan Zhang, Yong Niu. Geostatistical interpolation model selection based on ArcGIS and spatio-temporal variability analysis of groundwater level in piedmont plains, northwest China. SpringerPlus. 2016; 5 (1):425.

Chicago/Turabian Style

Yong Xiao; Xiaomin Gu; Shiyang Yin; Jingli Shao; Yali Cui; Qiulan Zhang; Yong Niu. 2016. "Geostatistical interpolation model selection based on ArcGIS and spatio-temporal variability analysis of groundwater level in piedmont plains, northwest China." SpringerPlus 5, no. 1: 425.

Journal article
Published: 23 December 2014 in Journal of Earth Science
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The amount of water withdrawn by wells is one of the quantitative variables that can be applied to estimate groundwater resources and further evaluate the human influence on groundwater systems. The accuracy for the calculation of the amount of water withdrawal significantly influences the regional groundwater resource evaluation and management. However, the decentralized groundwater pumping, inefficient management, measurement errors and uncertainties have resulted in considerable errors in the groundwater withdrawal estimation. In this study, to improve the estimation of the groundwater withdrawal, an innovative approach was proposed using an inversion method based on a regional groundwater flow numerical model, and this method was then applied in the North China Plain. The principle of the method was matching the simulated water levels with the observation ones by adjusting the amount of groundwater withdrawal. In addition, uncertainty analysis of hydraulic conductivity and specific yield for the estimation of the groundwater withdrawal was conducted. By using the proposed inversion method, the estimated annual average groundwater withdrawal was approximately 24.92×109 m3 in the North China Plain from 2002 to 2008. The inversion method also significantly improved the simulation results for both hydrograph and the flow field. Results of the uncertainty analysis showed that the hydraulic conductivity was more sensitive to the inversion results than the specific yield.

ACS Style

Jingli Shao; Yali Cui; Qichen Hao; Zhong Han; Tangpei Cheng. Study on the estimation of groundwater withdrawals based on groundwater flow modeling and its application in the North China Plain. Journal of Earth Science 2014, 25, 1033 -1042.

AMA Style

Jingli Shao, Yali Cui, Qichen Hao, Zhong Han, Tangpei Cheng. Study on the estimation of groundwater withdrawals based on groundwater flow modeling and its application in the North China Plain. Journal of Earth Science. 2014; 25 (6):1033-1042.

Chicago/Turabian Style

Jingli Shao; Yali Cui; Qichen Hao; Zhong Han; Tangpei Cheng. 2014. "Study on the estimation of groundwater withdrawals based on groundwater flow modeling and its application in the North China Plain." Journal of Earth Science 25, no. 6: 1033-1042.

Journal article
Published: 18 June 2014 in Journal of Earth Science
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In this paper, a coupled numerical groundwater and land subsidence model was developed for the Tianjin Plain. The model was employed to investigate the groundwater resources and their changes over the last decade, and to further predict the changing patterns of the groundwater level and associated land subsidence in future. First, according to the regional hydrogeology, the simulation area was defined with an area of 10.6×103 km2, which was divided into six aquifer units. A coupled groundwater and land subsidence numerical model was built by using Modflow2005 and the land subsidence simulation module SUB (subsidence and aquifer-system compaction), in which the groundwater flow was modeled as three-dimensional unsteady flow and the land subsidence simulation was based on one-dimensional consolidation theory. The model was then calibrated by using the groundwater level contour lines, hydrographs, and land subsidence hydrographs over the period of 1998–2008. In addition, groundwater balance analysis of the simulation period indicated that under multi-year groundwater withdrawal condition the cross-flow recharge, compression release, and lateral boundary inflow contributed 44.43%, 32.14%, and 21.88% to the deep aquifer recharge, respectively. Finally, the model was applied to predict the changing patterns of the groundwater levels and the associated variations in land subsidence under the control of groundwater exploitation after implementation of the south-to-north water diversion project. The simulation results demonstrated that the groundwater level may gradually increase year by year with an decrease in the groundwater withdrawal; and the land in dominated land subsidence regions including the urban area, Dagang, Hangu, Jinghai, Wuqing, and Jinnan, may rebound at an average rate of 2–3 mm/a, and the land subsidence rate in the other regions may decrease.

ACS Style

Yali Cui; Chen Su; Jingli Shao; Yabin Wang; Xiaoyuan Cao. Development and application of a regional land subsidence model for the plain of Tianjin. Journal of Earth Science 2014, 25, 550 -562.

AMA Style

Yali Cui, Chen Su, Jingli Shao, Yabin Wang, Xiaoyuan Cao. Development and application of a regional land subsidence model for the plain of Tianjin. Journal of Earth Science. 2014; 25 (3):550-562.

Chicago/Turabian Style

Yali Cui; Chen Su; Jingli Shao; Yabin Wang; Xiaoyuan Cao. 2014. "Development and application of a regional land subsidence model for the plain of Tianjin." Journal of Earth Science 25, no. 3: 550-562.

Review
Published: 01 July 2005 in Groundwater
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Ground water plays an important role in water supply and the ecology of arid to semiarid areas such as Northwest China, where the landscape is fragile due to frequent drought in the past few decades. This paper discusses the role of ground water in these ecosystems, including the effect of condensation water and water table depth on the growth of plants and degree of soil salinity. The paper also discusses the controlling process for land desertification and soil salinization in Northwest China. Water table depth is a key factor controlling the water balance, ground water flow, and salt transport in the vadose zone. The suitable water table depth for vegetation growth, which can prevent land desertification and soil salinization, is within a range of 2 to 4 m; the optimal depth is ∼3 m. As examples, changes in ecosystems owing to water resources development in Tarim and Manas basins, Xinjiang, China, are discussed.

ACS Style

Yali Cui; Jingli Shao. The Role of Ground Water in Arid/Semiarid Ecosystems, Northwest China. Groundwater 2005, 43, 471 -477.

AMA Style

Yali Cui, Jingli Shao. The Role of Ground Water in Arid/Semiarid Ecosystems, Northwest China. Groundwater. 2005; 43 (4):471-477.

Chicago/Turabian Style

Yali Cui; Jingli Shao. 2005. "The Role of Ground Water in Arid/Semiarid Ecosystems, Northwest China." Groundwater 43, no. 4: 471-477.