Response of hydrogeological processes in a regional groundwater system to environmental changes: A modeling study of Yinchuan Basin, China

Li, Jie; Zhou, Yangxiao; Wang, Wenke; Liu, Sida; Liu, Ying; Wu, Ping

doi:10.1016/j.jhydrol.2022.128619

Cited by 13 publications

(5 citation statements)

References 43 publications

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“…Meanwhile, FAN et al [62] contended that variations in DTG within Pingluo County's high-and middle-DTG distribution areas were predominantly influenced by yellow water diversion quantities, thereby substantiating that dynamic changes in DTG within the study region were primarily driven by canal leakage and irrigation infiltration recharge. The analysis conducted by ZHAI et al [9] and Li et al [59] further corroborates these findings regarding the contribution rates of driving factors on DTG. Therefore, the implementation of agricultural water-saving measures has resulted in a reduction in canal leakage and recharge through irrigation, leading to a gradual increase in DTG.…”

Section: Discussionsupporting

confidence: 70%

“…This phenomenon also signifies the impact of irrigation on groundwater levels, wherein substantial recharge from irrigation occurs during May to August and November, subsequently leading to a shallower DTG. The investigations conducted by ZHAI et al [9], CHENG et al [50], Ruan et al [58][59][60], and LUO et al [60] in the Qingtongxia Yellow River Irrigation District and on the Yinchuan Plain also demonstrate that irrigation significantly influences the annual groundwater dynamics in the region, resulting in a decrease in DTG during the irrigation period and an increase during the non-irrigation period. The annual dynamics of DTG also support that the implementation of agricultural water-saving measures has a significant impact on groundwater dynamics in the Helan Irrigation District.…”

Section: Discussionmentioning

confidence: 99%

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Evolution Trend of Depth to Groundwater and Agricultural Water-Saving Measure Threshold under Its Constraints: A Case Study in Helan Irrigated Areas, Northwest China

Chang,

Yang,

et al. 2024

Water

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Water conservation is imperative for alleviating water shortages and fostering the establishment of a water-saving society. However, the implementation of water-saving measures caused an increase in the depth to groundwater, resulting in ecological issues. Therefore, reasonable water saving should consider the appropriate depth to groundwater and its evolution trend. This study focuses on the Helan irrigation area in Ningxia as the research subject, aiming to establish thresholds for agricultural water-saving measures while considering constraints by depth to groundwater. The evolution trend of depth to groundwater from 1995 to 2018 was analyzed using the k-Shape cluster and complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) methods. Then, the thresholds of agricultural water-saving measures involved comparing groundwater numerical simulation results for water-saving scenarios, with the control area of ecological groundwater table depth and water shortage rate serving as the evaluation indices. The thresholds for implementing agricultural water-saving measures are as follows: the canal water utilization coefficient is set at 0.62; the proportion of water-efficient irrigation areas to effective irrigation areas should be 40% in the Yellow River irrigation area and 90% in the pumps-up Yellow River irrigation area; additionally, a reduction of 75% in the rice planting area is targeted.

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Section: Discussionsupporting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Evolution Trend of Depth to Groundwater and Agricultural Water-Saving Measure Threshold under Its Constraints: A Case Study in Helan Irrigated Areas, Northwest China

Chang,

Yang,

et al. 2024

Water

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“…For example, J. Li et al (2022) adopted MODFLOW for analysis the response of hydrogeological processes on groundwater droughts. Reinecke et al (2021) applied PCR-GLOBWB model to analysis the potential groundwater droughts.…”

Section: Introductionmentioning

confidence: 99%

“…For example, J. Li et al. (2022) adopted MODFLOW for analysis the response of hydrogeological processes on groundwater droughts. Reinecke et al.…”

Section: Introductionmentioning

confidence: 99%

Explaining the Mechanism of Multiscale Groundwater Drought Events: A New Perspective From Interpretable Deep Learning Model

Cai,

Shi,

Zhou

et al. 2024

Water Resources Research

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This study presents a new approach to understand the causes of groundwater drought events with interpretable deep learning (DL) models. As prerequisites, accurate long short‐term memory (LSTM) models for simulating groundwater are built for 16 regions representing three types of spatial scales in the southeastern United States, and standardized groundwater index is applied to identify 233 groundwater drought events. Two interpretation methods, expected gradients (EG) and additive decomposition (AD), are adopted to decipher the DL‐captured patterns and inner workings of LSTM networks. The EG results show that: (a) temperature‐related features were the primary drivers of large‐scale groundwater droughts, with their importance increasing from 56.1% to 63.1% as the drought events approached from 6 months to 15 days. Conversely, precipitation‐related features were found to be the dominant factors in the formation of groundwater drought in small‐scale catchments, with the overall importance ranging from 59.8% to 53.3%; (b) Seasonal variations in the importance of temperature‐related factors are inversely related between large and small spatial scales, being more significant in summer for larger regions and in winter for catchments; and (c) temperature‐related factors exhibited an overall “trigger effect” on causing groundwater drought events in the studying areas. The AD method unveiled how the LSTM network behaved differently in retaining and discarding information when emulating different groundwater droughts. In summary, this study provides a new perspective for the causes of groundwater drought events and highlights the potential and prospect of interpretable DL in enhancing our understanding of hydrological processes.

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“…Groundwater is not only an important component of water resources, but also plays a vital role in resource security (Pradeep and Krishan, 2022), ecological maintenance (Ren et al, 2018), and geological security (Li et al, 2018;Li et al, 2022a). Climate change and human activities have caused changes in groundwater resources in some regions in recent years, including serious problems such as overexploitation and pollution (Chen et al, 2020a;Chen et al, 2020b;Ding et al, 2020), which affect regional water security (Cha et al, 2018), ecological security (Mohallel and Gomaa, 2017;Wei et al, 2023), and geological security (Sheng, 2013).…”

Section: Introductionmentioning

confidence: 99%

Evolution of groundwater recharge-discharge balance in the Turpan Basin of China during 1959–2021

Qin,

Wu,

Dong

et al. 2023

J. Arid Land

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Groundwater overexploitation is a serious problem in the Turpan Basin, Xinjiang Uygur Autonomous Region of China, causing groundwater level declines and ecological and environmental problems such as the desiccation of karez wells and the shrinkage of lakes. Based on historical groundwater data and field survey data from 1959 to 2021, we comprehensively studied the evolution of groundwater recharge and discharge terms in the Turpan Basin using the groundwater equilibrium method, mathematical statistics, and GIS spatial analysis. The reasons for groundwater overexploitation were also discussed. The results indicated that groundwater recharge increased from 14.58×10 8 m 3 in 1959 to 15.69×10 8 m 3 in 1980, then continued to decrease to 6.77×10 8 m 3 in 2021. Groundwater discharge increased from 14.49×10 8 m 3 in 1959 to 16.02×10 8 m 3 in 1989, while continued to decrease to 9.97×10 8 m 3 in 2021. Since 1980, groundwater recharge-discharge balance has been broken, the decrease rate of groundwater recharge exceeded that of groundwater discharge and groundwater recharge was always lower than groundwater discharge, showing in a negative equilibrium, which caused the continuous decrease in groundwater level in the Turpan Basin. From 1980 to 2002, groundwater overexploitation increased rapidly, peaking from 2003 to 2011 with an average overexploitation rate of 4.79×10 8 m 3 /a; then, it slowed slightly from 2012 to 2021, and the cumulative groundwater overexploitation was 99.21×10 8 m 3 during 1980-2021. This research can provide a scientific foundation for the restoration and sustainable use of groundwater in the overexploited areas of the Turpan Basin.

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Response of hydrogeological processes in a regional groundwater system to environmental changes: A modeling study of Yinchuan Basin, China

Cited by 13 publications

References 43 publications

Evolution Trend of Depth to Groundwater and Agricultural Water-Saving Measure Threshold under Its Constraints: A Case Study in Helan Irrigated Areas, Northwest China

Evolution Trend of Depth to Groundwater and Agricultural Water-Saving Measure Threshold under Its Constraints: A Case Study in Helan Irrigated Areas, Northwest China

Explaining the Mechanism of Multiscale Groundwater Drought Events: A New Perspective From Interpretable Deep Learning Model

Evolution of groundwater recharge-discharge balance in the Turpan Basin of China during 1959–2021

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