Investigating the drought propagation dynamics between meteorological and groundwater drought in the Yellow River Basin, China

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133446 - 133446

Published: May 1, 2025

Language: Английский

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Towards the sustainable development of water security: A new copula-based risk assessment system

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112489 - 112489

Published: Aug. 20, 2024

Water security is deeply intertwined with ecosystems, society and the economy, a frequent focal point of sustainable development. This study investigates water (WS) Inner Mongolia, dryland region in northern China. Specifically, an indicator system integrating principles Stability (S), Cooperation (C), Resilience (R) was constructed to quantitatively comprehensively assess security. Risk probability calculated by combining its output copula function. The findings revealed that: (1) WS-SCR levels area gradually increased from 2001 2021. periods multi-year average 0.42, which at threshold level security; (2) Based on standard deviation ellipse, spatial distribution changed northeast southwest back northeast. centroid change shifted east west east; (3) Key drivers influencing included GDP per capita (S3), agricultural irrigation consumption unit (C4), comprehensive use (C5), reclaimed rate (C8), fertilizer application farmland (R4), population density (R5); (4) S-C, S-R, C-R relationships within were best modelled Clayton function, whereas S-C-R relationship most accurately using Frank three-dimensional joint risk (S≤0.4, C≤0.4, R≤0.4) 0.226; that R insecure increasing S or C index values. provides scientific foundation for long-term planning management development Eurasian drylands.

Language: Английский

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Investigating the Spatiotemporal Complexity of Rainfall from a Chaotic Perspective: Case Study in the Jinsha River Basin, China

Journal of Hydrologic Engineering, Journal Year: 2024, Volume and Issue: 29(4)

Published: May 17, 2024

Language: Английский

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Water conservation for plateau lakeside cities under the new development philosophy

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112560 - 112560

Published: Sept. 1, 2024

Urban progression influences water conservation by altering surface characteristics and local climate regimes, potentially posing significant risks to sustainability ecological integrity. Since 2015, the Chinese government has championed a new development philosophy aimed at promoting harmonious coexistence between human nature. Based on green connotation of philosophy, this study simulated spatial temporal distribution in five plateau lakeside cities (Plateau Lakeside City-PLC: Dianchi Lake Basin-DCB, Fuxian Basin-FXB, Erhai Basin-EHB, Qilu Basin-QLB Xingyun Basin-XYB), established comprehensive framework indicators affecting conservation, quantified changes drivers conservation. The results indicated that, except for DCB, PLC exhibits similarity, but overall demonstrates declining trend over time. average importance factors was weighed using Geodetector's q value. most critical included change (precipitation: q_PRE=0.66; evaporation: q_ET=0.57) land cover (q_LC=0.45). In addition, topography (slope: q_SLOPE=0.39; elevation: q_DEM=0.43), vegetation coverage (q_NDVI=0.30), soil (plant available content: q_PAWC=0.38; root restricting layer depth: q_ROOT=0.18) were influential followed cover. Among social factors, population density (q_POP=0.37) small impact while economic activities human-related (q_CROP,q_NTL, q_CITY are all less than 0.1) do not show impact, due government's implementation which balances

Language: Английский

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Towards the Sustainable Development of Water Security: A New Copula-Based Risk Assessment System

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

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Forecasting water scarcity with an optimized Soil and Water Assessment Tool (SWAT) model under representative concentration pathway (RCP) scenarios

Water Science & Technology Water Supply, Journal Year: 2024, Volume and Issue: unknown

Published: April 22, 2024

Abstract Water Supply issues a formal withdrawal in relation to the above article by Cen Li, Xin Guo, Liping Chen, Majid Khayatnezhad and Fatemeh Gholinia. This decision has been made due concerns that were raised regarding potential citation manipulation inappropriate references, significant authorship changes during peer review. The journal did not receive satisfactory response these as such Editors-in-Chief no longer have confidence integrity of article.

Language: Английский

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Inferring causal associations in hydrological systems: A comparison of methods

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

Many research issues in hydrological systems are intrinsically causal, aiming to determine whether and how one factor affects another. Although causal inference methods have been applied more or less hydrology, there still remains a lack of systematic comparison between different methods. Here, four popular the community, including cross-correlation function (CCF), convergent cross mapping (CCM), transfer entropy (TE), network learning algorithm (PCMCI+) were selected, with detailed explanation their basic principles underlying assumptions. Next, performances these evaluated large sample tests sensitivity analysis using synthetic time series generated by conceptual model two predesigned structures. Then, real-world cases further understand characteristics. The findings show superior performance PCMCI + method commendable level interpretability real cases, thus warranting its broader application systems. limitations other three methods, especially effectively addressing confounding mediating factors, led several unreasonable links. Furthermore, emergence conflicting results among applications underscores necessity for multifaceted understanding based on particular assumptions constraints. A comprehensive diverse according specific issue is encouraged robustness conclusions, clearly stated advance. Overall, our reveals potential comprehension complex interactions within systems, serving as useful guide prosperity hydrology.

Language: Английский

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Hydrologic Responses to Climate Change and Implications for Reservoirs in the Source Region of the Yangtze River

International Journal of Climatology, Journal Year: 2024, Volume and Issue: 44(14), P. 5280 - 5296

Published: Oct. 15, 2024

ABSTRACT Understanding the hydrological impacts of climate change is essential for robust and sustainable water management. This study assessed hydrologic conditions under changing in Jinshajiang River basin, source region Yangtze River, using model SWAT with historical observations future simulations two Shared Socioeconomic Pathways (SSP2‐4.5 SSP5‐8.5). For period, an increasing trend precipitation, evapotranspiration, snowmelt, streamflow increases upstream but keeps decreasing downstream catchment. scenarios, a warmer wetter projected basin throughout 21st century, leading to overall increase mean extreme streamflow. The magnitude more significantly far than near future, significant SSP5‐8.5 SSP2‐4.5. remarkable precipitation causes transition compared period. warming leads continuing decline snowfall snow equivalent, followed by earlier snowmelt higher peak streamflow, especially at Ultimately, reservoirs are expected gain inflows, however, greater variability including likelihoods flood drought events, which impose potential challenges on reservoir operations. These outcomes indicate importance adaptive resources management melting contributed sustain enhance its services global warming.

Language: Английский

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Evaluation of Water Supply Risks and Emergency Water Volume in Coastal Cities Based on Dynamic Simulation

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 22, 2024

Water supply security is the basis for high-quality urban development. Amid escalating extreme climate events, upstream intrusion of saltwater in Pearl River Estuary poses significant challenges to water cities. This study establishes a city system model based on dynamics method, then evaluates risks Zhongshan City from 2016 2023 using supply-demand gap and stress index as risk assessment indicators. Additionally, it simulates dynamic under five development scenarios (conventional, economic, population, conservation, comprehensive) 17 2024 2035. Based simulation results, proposes emergency reserve requirements 2030 2035 response levels 10, 20, 30, 45, 60 days. The results indicate that Zhongshan's demand has increased 2023, with capacity meeting but significantly impacted by intrusion. highest (peaking at 0.45 2021) occur when front reaches Quanlu, Renyi, Dafeng intake points simultaneously or individually. Among scenarios, peaks 2035, economic scenario lowest water-saving scenario. comprehensive scenario, which balances growth resource achieves 266.90×104 m³/d, 5.19% reduction compared conventional thus making more acceptable policymakers. Under exhibits (0-6.74) risk, followed (0-7.11) (0-7.84) risk. current reserves can usually meet where only below Quanlu Dafeng, additional will be necessary higher various duration requirements. When Yinggezui 60-day level considered, smallest deficit, while largest, deficits 7,938×104 m³ 8,928×104 10,164×104 12,354×104 respectively. These findings offer valuable insights coastal policymakers selecting paths enhancing capabilities.

Language: Английский

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Set pair analysis and system dynamics coupling approach for structure simulation and variation trend evaluation of water resources spatial equilibrium system

JAWRA Journal of the American Water Resources Association, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract The implement of water resources spatial equilibrium (WRSE) schemes is fundamental task integrated management in China, which, the evaluation and simulation analysis WRSE system great concern for understanding overall variation feedback characteristics system. Therefore, we utilized ordered degree, entropy connection number coupling model to evaluate system, also employed dynamics (SD) scenario method reveal between different variables subsystems, thus set pair analysis‐SD based approach structure trend was constructed. application results Anhui province, China demonstrated that, provincial situation presented obvious improving trend, 2009–2019, index degree Hefei, increased from minimum 0.6434 (Grade 3, unequilibrium) maximum 0.9985 1, equilibrium). Moreover, future will display stable during 2020 2029, annual availability utilization efficiency have significant influence on And research findings can be favorable formulate development strategies.

Language: Английский

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