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Water shortage and overexploitation of groundwater (GW) have become the key factors restricting the development of the Xiongan New Area (XNA), the environmental management of Baiyangdian Lake, and the social and economic development of surrounding areas. This study used a numerical GW flow model to quantitatively analyze the changes to the shallow GW level and GW reserves of the plain area of the Daqing River Basin over the next 15 years (2021–2035) under different artificial recharge schemes with the south to north water diversion project (SNWDP) acting as the GW recharge source. The results showed increasing GW storage and GW levels and that the regional GW resources are in a positive equilibrium state. The rates of change of the well irrigation supply scheme and the joint river-well irrigation supply scheme in the XNA will increase by 14.56% and 11.04% by 2035 as compared with the current situation. The well irrigation recharge scheme for the XNA was determined to be the most effective when comparing with the effects of the different artificial recharge schemes on the GW levels and recharge. This study provides a reference for the management and protection of aquifers in other areas suffering serious GW overexploitation.
Guangyao Chi; Xiaosi Su; Hang Lyu; Guigui Xu; Yiwu Zhang; Ningfei Li. Simulating the Shallow Groundwater Level Response to Artificial Recharge and Storage in the Plain Area of the Daqing River Basin, China. Sustainability 2021, 13, 5626 .
AMA StyleGuangyao Chi, Xiaosi Su, Hang Lyu, Guigui Xu, Yiwu Zhang, Ningfei Li. Simulating the Shallow Groundwater Level Response to Artificial Recharge and Storage in the Plain Area of the Daqing River Basin, China. Sustainability. 2021; 13 (10):5626.
Chicago/Turabian StyleGuangyao Chi; Xiaosi Su; Hang Lyu; Guigui Xu; Yiwu Zhang; Ningfei Li. 2021. "Simulating the Shallow Groundwater Level Response to Artificial Recharge and Storage in the Plain Area of the Daqing River Basin, China." Sustainability 13, no. 10: 5626.
The conductivity mass balance (CMB) method has a long history of application to baseflow separation studies. The CMB method uses site-specific and widely available discharge and specific conductance data. However, certain aspects of the method remain unstandardized, including the determination of the applicability of this method for a specific area, minimum data requirements for baseflow separation and the most accurate parameter calculation method. This study collected and analyzed stream discharge and water conductivity data for over 200 stream sites at large spatial (2.77 to 2 915 834 km2 watersheds) and temporal (up to 56 years) scales in the Mississippi River basin. The suitability criteria and key factors influencing the applicability of the CMB method were identified based on an analysis of the spatial distribution of the inverse correlation coefficient between stream discharge and conductivity and the rationality of baseflow separation results. Sensitivity analysis, uncertainty assessment and T test were used to identify the parameter the method was most sensitive to, and the uncertainties of baseflow separation results obtained from different parameter determination methods and various sampling durations were compared. The results indicated that the inverse correlation coefficient between discharge and conductivity can be used to quantitatively determine the applicability of the CMB method, while the CMB method is more applicable in tributaries, headwater reaches, high altitudes and regions with little influence from anthropogenic activities. A minimum of 6-month discharge and conductivity data was found to provide reliable parameters for the CMB method with acceptable errors, and it is recommended that the parameters SCRO and SCBF be determined by the 1st percentile and dynamic 99th percentile methods, respectively. The results of this study can provide an important basis for the standardized treatment of key problems in the application of the CMB.
Hang Lyu; Chenxi Xia; Jinghan Zhang; Bo Li. Key challenges facing the application of the conductivity mass balance method: a case study of the Mississippi River basin. Hydrology and Earth System Sciences 2020, 24, 6075 -6090.
AMA StyleHang Lyu, Chenxi Xia, Jinghan Zhang, Bo Li. Key challenges facing the application of the conductivity mass balance method: a case study of the Mississippi River basin. Hydrology and Earth System Sciences. 2020; 24 (12):6075-6090.
Chicago/Turabian StyleHang Lyu; Chenxi Xia; Jinghan Zhang; Bo Li. 2020. "Key challenges facing the application of the conductivity mass balance method: a case study of the Mississippi River basin." Hydrology and Earth System Sciences 24, no. 12: 6075-6090.
Significant physical, chemical and biological gradients between river water and groundwater will result in complicated biogeochemical reactions during riverbank infiltration (RBF), which can trigger release of toxic and/or harmful heavy metals/metalloids such as arsenic from the aqueous medium into groundwater and threaten the groundwater quality. It is crucial to understand these biogeochemical processes during RBF by effective tracing methods. In this study, a typical RBF site along Liao River in Northeast China was selected as case study area and multi-isotopes (such as δ13C, δ34S, δ57Fe and δ56Fe) coupled with hydrochemistry were used to trace the main biogeochemical processes during RBF. The research results shows that carbon, iron and sulfur isotopes act as good indicators of biogeochemical processes during river water infiltration. Organic carbon that drives biogeochemical processes comes primarily from dissolved organic carbon and sedimentary organic carbon. 34S enrichment in groundwater SO42− quantified sulfate consumption with the enrichment factor of −13.86‰. Different 56Fe variation types signify three pathways of iron cycling (microbial mediated reduction of Fe oxides/hydroxides, formation of Fe-sulfides and re-adsorption of Fe(II) into iron oxide minerals) were deduced in the groundwater.
Jing Bai; Xiaosi Su; Jiamei Wang; Hang Lyu; Ruimin Gao; Shuai Lu. Multi-isotope constraints on biogeochemical processes during bank filtration: A case study of the Liao River, Northeast China. Applied Geochemistry 2020, 122, 104762 .
AMA StyleJing Bai, Xiaosi Su, Jiamei Wang, Hang Lyu, Ruimin Gao, Shuai Lu. Multi-isotope constraints on biogeochemical processes during bank filtration: A case study of the Liao River, Northeast China. Applied Geochemistry. 2020; 122 ():104762.
Chicago/Turabian StyleJing Bai; Xiaosi Su; Jiamei Wang; Hang Lyu; Ruimin Gao; Shuai Lu. 2020. "Multi-isotope constraints on biogeochemical processes during bank filtration: A case study of the Liao River, Northeast China." Applied Geochemistry 122, no. : 104762.