Journal of Hydrology最新文献

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Water yield service flow assessment under future SSP-RCP scenarios in the Yellow River Basin: Coupled effect of climate and land use change 黄河流域未来SSP-RCP情景下产水量服务流量评价:气候与土地利用变化的耦合效应
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-07 DOI: 10.1016/j.jhydrol.2025.133852
Y.Y. Cui , C.B. Wu , G. Niu , G.H. Huang
{"title":"Water yield service flow assessment under future SSP-RCP scenarios in the Yellow River Basin: Coupled effect of climate and land use change","authors":"Y.Y. Cui ,&nbsp;C.B. Wu ,&nbsp;G. Niu ,&nbsp;G.H. Huang","doi":"10.1016/j.jhydrol.2025.133852","DOIUrl":"10.1016/j.jhydrol.2025.133852","url":null,"abstract":"<div><div>As extreme climate events and human activities increase in frequency, the unreasonable use of water resources and imbalance in supply–demand pose a serious threat to human society. The concept of water yield service flow (WYSF) introduces a new perspective into the research on water supply and demand (WSD) coupling mechanism and water resources management. However, most of the studies on WSD only consider limited factors in their simulation and neglect the supply–demand coupling mechanism, leaving the research from the standpoint of WYSF at a stage that awaits further exploration. This study constructed a coupled analysis framework to examine the impact of Climate and Land Use Change (CLUC) on WSD, aiming to reveal the flow pathways of water under the context of environmental changes in the Yellow River Basin (YRB). On the basis of the supply–demand coupling mechanism, the spatial pathways of WYSF were finally mapped. The results indicated that: (a) The magnitude of climate change is the greatest under the SSP585 scenario, whereas it is more moderate under the SSP126 scenario. (b) Three scenarios exhibit an identical spatial pattern of land use change, which is primarily characterized by the expansion of impervious surface on cultivated land and the encroachment of forest and grassland into water. However, the extent of expansion and reduction varies, with the SSP585 scenario showing the most dramatic change, followed by the SSP126 and SSP245 scenarios. (c) Generally, under the three scenarios, sub-basins with greater supply are located in the upper and lower reaches, whereas areas with greater demand tend to cluster in the northwest and middle and lower reaches. This showed that there is an obvious mismatch in WSD. (d) The analysis of the WYSF networks showed that the introduction of WYSF concept for research can more accurately reflect the spatial match of WSD.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"662 ","pages":"Article 133852"},"PeriodicalIF":5.9,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Derivation and analysis of spatial variability in master recession curves with mixed effects model 混合效应模型下主衰退曲线空间变异性的推导与分析
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-07 DOI: 10.1016/j.jhydrol.2025.133853
Bo Chen , Xiaoqiong Chen , Zhuodong Zhang , Hongquan Sun
{"title":"Derivation and analysis of spatial variability in master recession curves with mixed effects model","authors":"Bo Chen ,&nbsp;Xiaoqiong Chen ,&nbsp;Zhuodong Zhang ,&nbsp;Hongquan Sun","doi":"10.1016/j.jhydrol.2025.133853","DOIUrl":"10.1016/j.jhydrol.2025.133853","url":null,"abstract":"<div><div>Master recession curves, often modeled by the equation <em>dQ/dt = -AQ<sup>B</sup></em>, are widely used to analyze hydrological responses, develop hydrological models, and assess basin storage. However, traditional methods for deriving these curves often overlook the correlation between recession data of individual events. In this study, we applied three conventional methods and the mixed effects model that accounts for data correlation to derive master recession curves across 425 U.S. basins. The conventional methods include the lower envelope, point cloud regression, and two stage approaches. We evaluated the effectiveness of each method by comparing characteristic recession timescales and conducted stepwise regressions to investigate sources of cross-basin variability in the master recession curves. Key findings include: (1) master recession curve estimation is significantly sensitive to the fitting method (<em>p &lt; 0.05</em>), with the sensitivity largely stemming from the high responsiveness of parameter <em>A</em> to the fitting approach; (2) the mixed effects model proves a valuable complement to traditional methods, with errors in recession timescale estimates from traditional methods being 1.78 to 30 times larger than those from the mixed effects model; (3) parameters <em>A</em> and <em>B</em> both vary considerably across basins even when derived with the same method, with parameter <em>A</em> showing more pronounced variability; and (4) parameter <em>A</em>’s spatial variability closely associates with vegetation cover, while parameter <em>B</em>’s variability shows a weaker and less consistent connection to geographic characteristics. The mixed effects model introduced here offers an alternative for deriving master recession curves, enhancing understanding of their spatial variability and providing insights for modeling master recession curves in data-scarce regions.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"662 ","pages":"Article 133853"},"PeriodicalIF":5.9,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Revealing the mechanism of electrokinetic remediation for lead-contaminated clayey soil by using molecular dynamics simulations 利用分子动力学模拟揭示铅污染粘土的电修复机理
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-07 DOI: 10.1016/j.jhydrol.2025.133845
Yu Zhong , Annan Zhou , Jiapei Du , Ali Zaoui
{"title":"Revealing the mechanism of electrokinetic remediation for lead-contaminated clayey soil by using molecular dynamics simulations","authors":"Yu Zhong ,&nbsp;Annan Zhou ,&nbsp;Jiapei Du ,&nbsp;Ali Zaoui","doi":"10.1016/j.jhydrol.2025.133845","DOIUrl":"10.1016/j.jhydrol.2025.133845","url":null,"abstract":"<div><div>This study uses molecular dynamics (MD) simulations to investigate the electrokinetic properties of lead-contaminated Na-montmorillonite under varying cation exchange capacities (CEC) and lead ion concentrations in coupled electric and hydraulic fields, aiming to elucidate mechanisms that govern lead ion distribution and pore water flow. Results reveal that Pb<sup>2+</sup> and Na<sup>+</sup> ions form hydration layers in water, migrating under an electric field and contributing to electro-osmotic flow. Electro-driven and hydraulic-driven processes are shown to be independent and can be linearly superimposed, with maximum removal efficiency achieved when the electric field aligns with the hydraulic gradient. The concentration of wall charges <em>ϕ<sub>e</sub></em> is employed to integrate MD simulation results with the traditional electro-osmosis model, which is confirmed by literature data and illustrates the validation of the established molecular model. Analysis indicates that CEC enhances electro-osmotic flow within a specific range (&lt;100 cmol kg<sup>−1</sup>), while the presence of lead ions has an inhibitory effect. Based on electric double layer (EDL) theory, the coupling impact of these two factors on electric potential <em>ψ</em>(<em>z</em>), <em>ζ</em>-potential, and thickness of the diffuse layer are investigated. The results show that increasing CEC significantly raises potential <em>ψ</em>(<em>z</em>) and <em>ζ</em>-potential, while higher lead ion concentrations compress the EDL and reduce electro-osmotic efficiency. This study provides theoretical and technical insights to optimize electrodynamic remediation parameters for practical applications in lead-contaminated soil remediation.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"662 ","pages":"Article 133845"},"PeriodicalIF":5.9,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Algal sensitivity and tolerance as key tools for validating organic pollution status in freshwater, detection of algal bioindicators 藻类的敏感性和耐受性是验证淡水中有机污染状况,检测藻类生物指标的关键工具
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-05 DOI: 10.1016/j.jhydrol.2025.133843
Soundararajan Vishnu Chitthan , Dharumadurai Dhanasekaran , Nooruddin Thajuddin
{"title":"Algal sensitivity and tolerance as key tools for validating organic pollution status in freshwater, detection of algal bioindicators","authors":"Soundararajan Vishnu Chitthan ,&nbsp;Dharumadurai Dhanasekaran ,&nbsp;Nooruddin Thajuddin","doi":"10.1016/j.jhydrol.2025.133843","DOIUrl":"10.1016/j.jhydrol.2025.133843","url":null,"abstract":"<div><div>Anthropogenic activities driven by daily human needs are leading to increased accumulation of organic pollutants in water bodies. This study employed a multidirectional analysis to assess pollution levels using the Sensitivity Index and Palmer Index. The bioindicator detection was performed through integrating ADHPS (Algal Diversity in Highly Polluted Site— representing algal diversity in Uyyakondan Canal) and CCA (Canonical Correspondence Analysis) score selection with response to organic pollution. Organic pollution levels were evaluated by GC–MS analysis through total compound peak area [total organic compound area (TOCA) and total organic pollutant area (TOPA)] and also by total organic carbon (TOC) analysis. The CCA score selection is a novel method developed for identifying bioindicators such as <em>Oscillatoria tenuis, O. limosa, Microcystis aeruginosa, Scenedesmus quadricauda, Euglena magnifica,</em> and <em>Nitzschia palea</em>. Among the five sites representing a pollution gradient, Uyyakondan Canal (Site 5) showed the highest organic pollution, with Palmer Index scores of 29 and 24 (genus and species) and Sensitivity Index scores of 3. Sites 1 and 3 had significantly lower pollution levels based on indicator scores, GC–MS, and TOC analysis. Site 5 had high TOC (90.4 mg L<sup>–1</sup>) and elevated accumulation of pollutants such as dibutyl phthalate (DBP) and bis(2-ethylhexyl) phthalate (DEHP). Pearson correlation showed a strong inverse relationship for the Sensitivity Index (<em>r</em> ≥ -0.95, <em>p</em> ≤ 0.012) and a marginally significant correlation for the Palmer Index (<em>r</em> ≤ 0.94, <em>p</em> ≤ 0.055), both in relation to pollution. Stepwise regression also confirmed the Sensitivity Index as a better predictor. Although the study includes 50 sampling locations across five sites, covering a range from unpolluted to heavily polluted waters, the findings are geographically confined to the Tiruchirappalli region of Tamil Nadu, India.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"661 ","pages":"Article 133843"},"PeriodicalIF":5.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel approach to increase accuracy in remotely sensed evapotranspiration through basin water balance and flux tower constraints 利用流域水量平衡和通量塔约束提高遥感蒸散发精度的新方法
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-05 DOI: 10.1016/j.jhydrol.2025.133824
Kul Khand , Gabriel B. Senay , MacKenzie Friedrichs , Koong Yi , Joshua B. Fisher , Lixin Wang , Kosana Suvočarev , Arman Ahmadi , Housen Chu , Stephen Good , Kanishka Mallick , Justine Missik , Jacob A. Nelson , David E. Reed , Tianxin Wang , Xiangming Xiao
{"title":"A novel approach to increase accuracy in remotely sensed evapotranspiration through basin water balance and flux tower constraints","authors":"Kul Khand ,&nbsp;Gabriel B. Senay ,&nbsp;MacKenzie Friedrichs ,&nbsp;Koong Yi ,&nbsp;Joshua B. Fisher ,&nbsp;Lixin Wang ,&nbsp;Kosana Suvočarev ,&nbsp;Arman Ahmadi ,&nbsp;Housen Chu ,&nbsp;Stephen Good ,&nbsp;Kanishka Mallick ,&nbsp;Justine Missik ,&nbsp;Jacob A. Nelson ,&nbsp;David E. Reed ,&nbsp;Tianxin Wang ,&nbsp;Xiangming Xiao","doi":"10.1016/j.jhydrol.2025.133824","DOIUrl":"10.1016/j.jhydrol.2025.133824","url":null,"abstract":"<div><div>Remote sensing-derived evapotranspiration (RSET) products capture the spatiotemporal variations of evapotranspiration (ET) from field to basin scales with unprecedented details. However, their accuracy varies across RSET estimation methods and diverse hydroclimate regions. While ET modeling efforts to account for biophysical processes and controlling parameters have made good progress in recent years, a parallel approach of integrating in-situ ET with RSET could reduce biases in RSET products. Basin water balance ET (WBET) and flux tower ET are widely applied to evaluate RSET accuracy, yet such ET measurements are rarely used for RSET bias corrections, especially for large area applications. To address this issue, we propose a novel approach: the water balance equivalence (WABE) method, which generates spatially continuous WBET for correcting biases in RSET products. The WABE method computes synthetic WBET by integrating observed WBET and flux tower-derived FLUXCOM ET, which fills the spatial gaps of observed WBET and generates a spatially continuous WBET dataset. Synthetic WBET (2002–2015 annual average) of eight-digit hydrologic unit code (HUC8) basins across the conterminous United States (CONUS), constituting 44 % (887 out of 2035 basins) of CONUS basins, was determined within 2.0 % (RMSE = 12 %) of observed WBET at CONUS and between 1–12 % (RMSE = 3–33 %) across 18 regions in CONUS. With WABE-based bias corrections, the overall annual bias of RSET decreased from 10 % (RMSE = 34 %) to 6 % (RMSE = 26 %) across 37 flux tower sites. The WABE method offers a new approach for RSET accuracy improvement and shows great promise for large area implementations with a potential to yield substantial benefits for building accurate basin water budgets and water management decisions.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"662 ","pages":"Article 133824"},"PeriodicalIF":5.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Blockiness and hydraulic conductivity of rocks with different fracture geometries” [J. Hydrol. 661 (2025) 133700] “不同裂缝几何形状岩石的块性和水力导流性”的勘误[J]。Hydrol. 661 (2025) 133700]
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-05 DOI: 10.1016/j.jhydrol.2025.133829
Pengcheng Ma, Maxime Levy Kongandembou, Qingchun Yu
{"title":"Corrigendum to “Blockiness and hydraulic conductivity of rocks with different fracture geometries” [J. Hydrol. 661 (2025) 133700]","authors":"Pengcheng Ma,&nbsp;Maxime Levy Kongandembou,&nbsp;Qingchun Yu","doi":"10.1016/j.jhydrol.2025.133829","DOIUrl":"10.1016/j.jhydrol.2025.133829","url":null,"abstract":"","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"660 ","pages":"Article 133829"},"PeriodicalIF":5.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Suspension dynamics of sand-silt mixtures: experimental insights and modelling implications 泥沙混合物的悬浮动力学:实验见解和模型含义
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-05 DOI: 10.1016/j.jhydrol.2025.133836
Zhongxing Qiao , Yongping Chen , Peng Yao , Min Su , Marcel Stive , Lei Ren , Zhengbing Wang
{"title":"Suspension dynamics of sand-silt mixtures: experimental insights and modelling implications","authors":"Zhongxing Qiao ,&nbsp;Yongping Chen ,&nbsp;Peng Yao ,&nbsp;Min Su ,&nbsp;Marcel Stive ,&nbsp;Lei Ren ,&nbsp;Zhengbing Wang","doi":"10.1016/j.jhydrol.2025.133836","DOIUrl":"10.1016/j.jhydrol.2025.133836","url":null,"abstract":"<div><div>Tidal flats are typically rich in fine-grained sediments, with tidal currents serving as the dominant hydrodynamic force. Sediment transport, mainly in the form of suspended load, is especially active in the mid- to low-tidal zones, where silt-rich sediments prevail. In these zones, variations in silt content significantly influence sediment suspension dynamics. To investigate the effect of silt content on the suspension behaviours of sand-silt mixtures under unidirectional flow, a series of experiments has been conducted in an annular flume. Sediment samples collected from silt-enriched tidal flats were remixed into seven types of sediment beds with the silt content ranging from 19 % to 79 %. Results indicate that under steady current conditions, the suspended sediment concentration (SSC) in sand-silt mixtures increased toward equilibrium. Sediment beds with 36 %–60 % silt content exhibited two-stage erosion behaviour, each marked by distinct characteristics. At low to moderate shear stress (0.18–0.74 Pa), smoother bed surfaces and hiding-exposure effects led to higher near-bed velocities and lower equilibrium SSCs. At higher shear stress levels (1.00–1.23 Pa), this behaviour shifted, with prolonged suspension development becoming the key feature. Based on the experimental findings, we further re-calibrated the equations predicting equilibrium SSC, which can be well described by a modified excess shear stress to the power of two. Subsequently, we investigated the boundary conditions that govern sediment suspension to model the observed suspension process. Building on the boundary condition prescribing a constant upward sediment flux, an asymptotic upward flux condition, which represents the delayed erosion response due to the resistance of silty bed structure, has been introduced and demonstrated as the most feasible. Furthermore, the development of SSC towards equilibrium was investigated. This process is well characterised by a time scale, which becomes notably larger for sediment beds with 36 %–60 % silt content at high velocity levels, reflecting their delayed response in suspension. These findings elucidate key mechanisms governing silt-dominated sediment erosion, enhancing predictive capabilities in modelling mixed sediment transport.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"661 ","pages":"Article 133836"},"PeriodicalIF":5.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metamodeling of a physically based pesticide runoff model with a long short-term memory approach 基于长短期记忆方法的农药径流物理模型元建模
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-05 DOI: 10.1016/j.jhydrol.2025.133800
Guillaume Métayer, Cécile Dagès, Marc Voltz, Jean-Stéphane Bailly
{"title":"Metamodeling of a physically based pesticide runoff model with a long short-term memory approach","authors":"Guillaume Métayer,&nbsp;Cécile Dagès,&nbsp;Marc Voltz,&nbsp;Jean-Stéphane Bailly","doi":"10.1016/j.jhydrol.2025.133800","DOIUrl":"10.1016/j.jhydrol.2025.133800","url":null,"abstract":"<div><div>Predicting the temporal variability in pesticide runoff from agricultural fields is essential for assessing the impacts of agricultural practices on surface water quality and the associated environmental risks. Richards-based models are valuable tools for this purpose, particularly in contexts characterized by high temporal variability in rainfall intensity, such as in the Mediterranean region. These methods can be applied to a wide range of operational applications at both the field and catchment scales. However, their operational capability is limited, primarily due to their high computation times. In this study, we assessed a metamodeling approach for a Richards-based model designed to simulate the hourly variability in water and pesticide runoff over a year while reducing computation times. The proposed approach is based on long short-term memory (LSTM) models and is applied to a field-scale pesticide runoff model coupling Richards and convection-dispersion equations with the uniform mixing cell concept for pesticide remobilization and an overland flow routine. The resulting metamodel accounts for meteorological conditions, compound properties, and pesticide application dates and rates. Although the LSTM architecture is not optimized, the metamodel reduces the computation time by 90% compared with that of the initial model. The metamodel shows high overall performance in simulating hourly discharges and pesticide concentrations, with Nash–Sutcliffe efficiency values of 0.99, confirming the ability of the LSTM models to handle hydrochemical time series. The results nonetheless indicate room for improvement in specific areas, such as simulating runoff occurrence or concentrations for compounds with low half-life values. Furthermore, the results encourage further consideration of adding static parameters as inputs to LSTM models to increase their generalizability. Overall, this study provides key insights for deploying methods to assess the impacts of agricultural practices on a large scale.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"662 ","pages":"Article 133800"},"PeriodicalIF":5.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluating the impact of drought-vegetation loss coupling on eco-hydrological stability in the Yellow River Basin, China 黄河流域干旱-植被损失耦合对生态水文稳定性的影响评价
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-05 DOI: 10.1016/j.jhydrol.2025.133823
Changmin Du , Siwei Chen , Lu Wang , Jingkai Xie , Sirui Dai , Yue-Ping Xu
{"title":"Evaluating the impact of drought-vegetation loss coupling on eco-hydrological stability in the Yellow River Basin, China","authors":"Changmin Du ,&nbsp;Siwei Chen ,&nbsp;Lu Wang ,&nbsp;Jingkai Xie ,&nbsp;Sirui Dai ,&nbsp;Yue-Ping Xu","doi":"10.1016/j.jhydrol.2025.133823","DOIUrl":"10.1016/j.jhydrol.2025.133823","url":null,"abstract":"<div><div>Under the dual pressures of increasing extreme climate events and escalating environmental vulnerability, the degradation of hydrological systems and vegetation loss may create a positive feedback loop within the eco-hydrological system (EHS), assessing the eco-hydrological stability has become an urgent priority. However, most previous studies have focused on assessing risks from the perspective of drought alone, often overlooking the temporal effects of vegetation responses to drought when linking drought with vegetation loss. The potential of evaluating risks through eco-hydrological stability remains largely unknown. Therefore, this study constructed the Standardized Compound Drought-Vegetation Loss Index (SCDVI) using a Copula model based on vegetation response patterns to drought, and quantified EHS risk based on stability (i.e., resistance and resilience) in the Yellow River Basin (YRB), China. Results indicated that the response pattern in the YRB exhibited substantial spatial heterogeneity and seasonal variations, with productivity being more significantly and sensitively affected during the summer when short-term response patterns dominated (64.1 % of the area had a response time of less than three months). The southeastern YRB, primarily located in the warm temperate deciduous broadleaf forest region, exhibited the lowest eco-hydrological stability. The study also found that regions with high vegetation productivity were more prone to a high resistance–low resilience trade-off, while areas with low vegetation productivity exhibited the opposite trade-off. These findings provide scientific insights for implementing targeted eco-hydrological restoration strategies to facilitate a balance between water resource sustainability and vegetation stability.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"661 ","pages":"Article 133823"},"PeriodicalIF":5.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative analysis of water, heat, and salinity dynamics during bare soil evaporation 裸地蒸发过程中水、热、盐动态的定量分析
IF 5.9 1区 地球科学
Journal of Hydrology Pub Date : 2025-07-05 DOI: 10.1016/j.jhydrol.2025.133841
Abdelhamid Ads , Nikolaos Tziolas , Constantinos V. Chrysikopoulos , TieJun Zhang , Maryam R. Al Shehhi
{"title":"Quantitative analysis of water, heat, and salinity dynamics during bare soil evaporation","authors":"Abdelhamid Ads ,&nbsp;Nikolaos Tziolas ,&nbsp;Constantinos V. Chrysikopoulos ,&nbsp;TieJun Zhang ,&nbsp;Maryam R. Al Shehhi","doi":"10.1016/j.jhydrol.2025.133841","DOIUrl":"10.1016/j.jhydrol.2025.133841","url":null,"abstract":"<div><div>In arid and semi-arid regions, significant evaporation intensifies water scarcities and soil salinization, imposing severe challenges to agricultural productivity and economic advancement. This study quantitatively assesses the impact of varying soil salinity levels (0 to 1 wt%) and their distribution within the soil column on water, heat, and salt transport dynamics during evaporation. With a series of eleven experiments, we have studied how different salinity concentrations and distributions across the soil section affect soil moisture, temperature profiles, and salinity distribution. Our findings reveal that moderate salinity levels delay the decline in soil saturation, reduce evaporation rates, and increase soil temperature due to reduced evaporative cooling and salt crust formation. Notably, a strong polynomial correlation was identified between salinity and the duration of the initial stage of saturation before declining. However, at salinity levels above 0.5 wt%, soil temperature starts to decrease as a thick salt layer forms that increases the soil’s albedo and reflecting the sunlight. Additionally, a coupled water-heat-salt transport model was applied to simulate and validate the observed experimental data. Understanding these interactions is crucial for improving the coupled model to optimize water usage, enhance crop growth, and mitigate soil salinization in arid and semi-arid regions.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"662 ","pages":"Article 133841"},"PeriodicalIF":5.9,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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