Journal of Hydrology最新文献

{"title":"Land-atmosphere interaction during heat waves diagnosed using vapor pressure deficit dynamics","authors":"Shulin Zhang ,&nbsp;Weiguang Wang ,&nbsp;Jia Wei ,&nbsp;Haiyang Qian ,&nbsp;Charles Nduhiu Wamucii ,&nbsp;Adriaan J. Teuling","doi":"10.1016/j.jhydrol.2024.132181","DOIUrl":"10.1016/j.jhydrol.2024.132181","url":null,"abstract":"<div><div>Vapor pressure deficit (VPD) plays an essential role in determining land-atmospheric interaction by proving a gradient for moisture transport and modulating the biophysical process of plants. Land-atmosphere interaction has been suggested to affect the evolution of heatwave, including its intensification and propagation. However, the role of VPD dynamics in this interaction during heat waves remains unclear. Here, we apply the Pearson correlation coefficient between VPD and energy fluxes to diagnose VPD-induced land-atmospheric interaction over different climate regions and ecosystems, and then evaluate key factors’ contributions to this interaction through machine learning. The result shows a nonlinear coupling between VPD and sensible heat fluxes (H) or latent heat fluxes (LE) during heat waves with both strong positive and negative coupling. This coupling exhibits climate and species-dependent. there is a considerable positive coupling between VPD and LE in all climate regions. However, the coupling of VPD and H is more climate-sensitive which shows positive correlations in arid and cold regions and negative coupling in temperate region. Across various vegetation types, LE consistently demonstrates a positive correlation with VPD. In contrast, the coupling between VPD and H tends to be negative in short vegetation whereas positive in forests. In addition, we discovered that the coupling between VPD and LE or H is significantly influenced by the heat wave duration (HWD) at (<em>p</em> &lt; 0.01). Specifically, the land-atmospheric interaction turns decoupling when the HWD extends beyond 8 days. Furthermore, the coupling direction between VPD and energy will change as heat waves evolve. The coupling direction between VPD and LE is considerably affected by maximum temperature. The direction of VPD and H coupling is intimately related to plant functional characteristics. Our research suggests that the VPD impacts should be imperative for accurately simulating land-atmospheric interaction during heat waves.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132181"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530989","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}

{"title":"Distinctive water bodies surrounding lakes: An effective indicator for drought monitoring and assessment","authors":"Zhen Zhang ,&nbsp;Bingsun Chen ,&nbsp;Junjie Li ,&nbsp;Wenjun Xie ,&nbsp;Beibei Yang ,&nbsp;Yi Bao ,&nbsp;Yijia Xie ,&nbsp;Qianyu Wang ,&nbsp;Yating Wei ,&nbsp;Wen Zhang ,&nbsp;Linyi Li ,&nbsp;Yun Chen ,&nbsp;Lingkui Meng","doi":"10.1016/j.jhydrol.2024.132179","DOIUrl":"10.1016/j.jhydrol.2024.132179","url":null,"abstract":"<div><div>The response mechanisms of surface water to drought and the potential and performance of water body changes in drought monitoring and assessment remain insufficiently elucidated. We take the Poyang Lake Basin, which suffers from drastic water body changes and frequent droughts, as a representative. Through integrating multisource data to extract long-term precise water bodies, we construct standardized water body area/number anomaly indices (SAAI/SNAI). Subsequently, we quantify the correlation and time lag response between SAAI, SNAI and drought. Our findings reveal that overall, water body area and number in the Poyang Lake Basin all exhibit a significant correlation with typical drought indices. Among them, the large water body area has a higher correlation coefficient with drought, making it a more effective indicator for drought monitoring. Water body changes of Poyang Lake surrounding area offer a more precise reflection of drought conditions than other sub-basins and exhibit greater sensitivity to drought. Meanwhile, water body area changes in Poyang Lake surrounding area lag behind meteorological drought by approximately half a month. And the basin’s water body area can typically respond with changes to some prolonged and severe hydrological droughts about 1 to 2 months in advance. We propose an integrated mechanism for drought monitoring and assessment informed by these conclusions and use actual drought events for qualitative validation. The results indicate that it is possible to assess water body drought conditions for the next approximately half month based on current meteorological drought conditions. Also, combining water body area changes with meteorological drought severity can aid in evaluating hydrological drought conditions for the following about 1–2 months. We extend our investigation to explore the universality of these phenomenon across eight shallow lakes globally characterized by significant water fluctuations. The results reveal that the water body changes in most of these lakes exhibit good potential for drought monitoring and assessment, and present a strong consistency with deep soil moisture, allowing for the accurate reflection of deep soil drought conditions. The lag response patterns between water bodies and drought in Dongting Lake, Hongze Lake, and Tonlé Sap Lake—also situated in the monsoon climate zone—are more similar to those observed in Poyang Lake. These distinctive lake water bodies can serve as an innovative indicator for drought monitoring and assessment, providing potential support for endeavors in drought prevention and mitigation.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132179"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530998","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}

{"title":"Accurate simulation of extreme rainfall–flood events via an improved distributed hydrological model","authors":"Ji Li ,&nbsp;Jiao Liu ,&nbsp;Zhiqiang Xia ,&nbsp;Chenrun Liu ,&nbsp;Yuechen Li","doi":"10.1016/j.jhydrol.2024.132190","DOIUrl":"10.1016/j.jhydrol.2024.132190","url":null,"abstract":"<div><div>Recently, the high incidence of extreme rainfall and flood events worldwide has severely harmed regional economies and societies. Therefore, flood simulations and forecasts, which can provide key technical support for regional flood control and disaster reduction, are urgently needed. The Liuxihe model, as a fully distributed, physically based hydrological model, was improved in this study to simulate extreme rainfall flood events in the Beijiang River Basin. This basin is a famous rainstorm centre in Guangxi Province, China. In this work, the Liuxihe model is improved in two aspects: first, its structure and runoff generation and confluence algorithm are improved, and second, the parameter calibration method is optimised. These two adjustments improve the flood simulation performance of the model and reduce the uncertainty of the simulation results. The results revealed that the flood simulated by the improved Liuxihe model was strongly consistent with the measured values, and the index values of the Nash coefficient, correlation coefficient, process relative error, and flood peak flow error performed very well in the scheme evaluation; in particular, the mean process relative error, flood peak error, and peak time difference decreased by 62%, 63%, and 80%, respectively, after model improvement. The error indicators of the simulation were within the allowable error range from the Standard for Hydrological Information and Hydrological Forecasting (GB/T-22482–2008), which meets the accuracy requirements of flood forecasting in the local hydrological department and can be used as a practical operational plan for flood forecasting. These satisfactory flood simulation results showed that the model and algorithm were improved; thus, the improved Liuxihe model can provide important theoretical guidance for regional flood forecasting and flood disaster mitigation.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132190"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530901","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}

{"title":"Using hydrological modeling and satellite observations to elucidate subsurface and surface hydrological responses to the extreme drought","authors":"Zixuan Tang ,&nbsp;Yongqiang Zhang ,&nbsp;Jing Tian ,&nbsp;Ning Ma ,&nbsp;Xiaojie Li ,&nbsp;Dongdong Kong ,&nbsp;Yijing Cao ,&nbsp;Xuening Yang ,&nbsp;Longhao Wang ,&nbsp;Xuanze Zhang ,&nbsp;Yuyin Chen","doi":"10.1016/j.jhydrol.2024.132174","DOIUrl":"10.1016/j.jhydrol.2024.132174","url":null,"abstract":"<div><div>Climate change and anthropogenic activities have intensified extreme weather events globally. In the summer of 2022, the Yangtze River Basin (YRB) in China experienced an extreme drought, significantly impacting the ecosystems and society. However, the specific effects of this extreme drought on surface and subsurface hydrological dynamics remain unclear. Here we employed satellite-observed terrestrial water storage anomaly (TWSA) and a modified hydrological model with consideration of reservoir operation, human water consumption, and water diversion engineering to quantify how subsurface and surface water in YRB responded to such an extreme drought in 2022. Validation against a series of observations shows that the modified model has good performance in reproducing daily streamflow, reservoir water storage, lake water storage, and snow water equivalent. It achieved more precise GRACE TWSA estimates in the YRB with significant human intervention, and therefore it can accurately quantify both surface and subsurface hydrological responses to the 2022 extreme drought. Compared to the same months (July-December) in 2015–2021, the drought in 2022 resulted in a decrease in precipitation and discharge of 373 km³ (36 %) and 324 km³ (50 %), respectively, while an increase in evapotranspiration of 156 km³ (29 %) in the YRB. In general, the surface water storage (SWS) is relatively low from July 2022, followed by subsurface water storage (SSWS) from August 2022, indicating an approximately one-month lag from the former to the latter. During the latter half year of 2022, the SWS and SSWS reduced by 48 km³ and 83 km³, respectively, suggesting the changes in the latter dominated the TWS variations. This study sheds light on the responses of surface and subsurface hydrology to extreme droughts, and the hydrological modeling framework with consideration of human activities proposed here holds applicability beyond the YRB.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132174"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554607","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}

{"title":"Unraveling the nexus: exploring river-groundwater interaction as the primary driver of eutrophication in river ecosystems","authors":"Edoardo Severini ,&nbsp;Monia Magri ,&nbsp;Elisa Soana ,&nbsp;Marco Bartoli","doi":"10.1016/j.jhydrol.2024.132185","DOIUrl":"10.1016/j.jhydrol.2024.132185","url":null,"abstract":"<div><div>Over recent decades, increased agricultural activities have significantly modified nitrogen (N) and water cycles, leading to a worsening of the environmental quality and widespread eutrophication. The present work investigates the critical issue of N contamination and its impact on eutrophication in three rivers located in the central part of the Po Plain (Northern Italy), one of Europe’s hotspots of N-fertilizers input and loss to aquatic ecosystems. The primary scientific problem addressed is the role of river-groundwater interactions in exacerbating eutrophication, primarily driven by nitrate (NO₃^-). Historical data from the past ten years on dissolved inorganic N forms in groundwater and rivers were analyzed and interpreted in relation to different watershed managements. This analysis quantified both the volumetric and qualitative contributions of river-groundwater interactions to rivers eutrophication.</div><div>Results indicate that river-groundwater interactions can be indeed the main cause of eutrophication in intensively cultivated watersheds, with effects surpassing those of typical causes like wastewater. The study highlights how the simultaneous presence of inefficient irrigation practices promotes surface water (and groundwater) overexploitation, reducing dilution and increasing contamination. All the analyzed rivers showed localized increase in NO₃^- concentration and worsening of their trophic status. Given the foresaw increase in groundwater and surface water use for irrigation under climate change pressures, this research provides a crucial empirical example of future challenges for regions with high N inputs and close relations among soil, groundwater, and surface water. The findings emphasize the urgent need for improved water and agricultural management to mitigate river-groundwater interaction-induced eutrophication.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132185"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of seismically derived tilt signals to characterize groundwater flow regimes: An example from a constant-rate pumping test in Taiwan","authors":"Chu-Fang Yang ,&nbsp;Wu-Cheng Chi ,&nbsp;Chien-Chung Ke ,&nbsp;Chin-Jen Lin","doi":"10.1016/j.jhydrol.2024.132188","DOIUrl":"10.1016/j.jhydrol.2024.132188","url":null,"abstract":"<div><div>Aquifer volumetric changes induce ground deformation. In hydrogeology, a constant-rate pumping test is used to characterize an aquifer system and its flow regimes. However, data only from one or two wells in a pumping site may lack detailed spatial information for a heterogeneous site. We propose that ground tilts detected by seismometers may provide additional spatial coverage. Here, we installed nine closely spaced broadband seismometers around a pumping well within 3–38 m to measure hydraulic-induced ground tilts during a 24-h constant rate pumping conducted in northeastern Taiwan. The tilts are overall consistent with an inverted cone shape analytical solution of ground vertical displacement due to water pressure perturbation. We found that ground subsidence, water table drawdown, vertical displacement, and ground tilt are linear with each other. However, inconsistent tilt directions show that local heterogeneities at each station affect the deformation pattern. The tilts at the stations near the pumping well were approximately oriented in a northwest-southeast direction, parallel to the dip directions of the fractures and the bedding plane. Tilt-estimated flow dimensions at seismic stations are spatially consistent with the drawdown-estimated flow dimensions at two wells. Preliminary hydrogeological surveys and seismic analyses show that this groundwater system combines sub-radial and spherical flow and has impermeable boundaries. The network is restricted by impermeable strata at greater depth, and the steep dipping fractures and the bedding plane. We demonstrate that the time series of tilts can be used to estimate flow dimensions at the tested site. Multiple closely spaced seismometers help to characterize details of the fractured groundwater network for constraining flow regimes and hydrogeological conditions.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132188"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530783","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}

{"title":"A multi-objective optimization framework for terrain modification based on a combined hydrological and earthwork cost-benefit","authors":"Hanwen Xu ,&nbsp;Mark Randall ,&nbsp;Lei Li ,&nbsp;Yuyi Tan ,&nbsp;Thomas Balstrøm","doi":"10.1016/j.jhydrol.2024.132154","DOIUrl":"10.1016/j.jhydrol.2024.132154","url":null,"abstract":"<div><div>The escalating risk of urban inundation has drawn increased attention to urban stormwater management. This study proposes a Terrain Modification Multi-Objective Optimization (TMMOO) framework, combining the Non-dominated Sorting Genetic Algorithm II (NSGA-II) with digital elevation model (DEM)-based hydrological cost factor analysis. To reduce the precipitation’s erosive forces and runoff’s kinetic energy, TMMOO offers the possibility of efficiently searching numerous solution sets that meet three conflicting objectives: minimizing maximum flow velocity, maximizing runoff path length and minimizing earthwork costs. Our application case study in Høje Taastrup, Denmark, demonstrates the ability of the TMMOO framework to iteratively generate diversified modification solutions, which form the reference for topography planning. Three DEM resolutions were inputted to validate the TMMOO framework’s accuracy and applicability. Challenges remain in optimizing computational speed and seeking effective solutions at the finer resolution. Integrating genetic algorithms with DEM-based analysis demonstrates the potential to consider more complicated hydrological benefit objectives with open-ended characteristics. The result of this study provides a novel and efficient way to optimize topographic characteristics for improving holistic stormwater management strategies.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132154"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on methodology for assessing social vulnerability to urban flooding: A case study in China","authors":"Meimei Wu,&nbsp;Min Chen,&nbsp;Guixiang Chen,&nbsp;Deqian Zheng,&nbsp;Yang Zhao,&nbsp;Xuan Wei,&nbsp;Yushan Xin","doi":"10.1016/j.jhydrol.2024.132177","DOIUrl":"10.1016/j.jhydrol.2024.132177","url":null,"abstract":"<div><div>Cities are economically developed, densely populated, highly concentrated areas of social wealth and high social vulnerability to floods. Assessing social vulnerability to urban flooding (SVUF) is important for improving a city’s ability to resist floods and reduce casualties and economic losses caused by disasters. However, owing to the abstract and complex nature of social vulnerability itself, the connotation of SVUF and the indicator system have not been standardised, and the rationality of the assessment methodology is controversial; therefore, assessing the SVUF faces great challenges. In this study, the connotation of SVUF was analysed based on social system theory. We considered the interactions between disasters and groups to construct a system of assessment indicators. The game-theory combinatorial weighting method (GTCWM) was used to determine the weights of indicator combinations, combined with the technique for order preference by similarity to an ideal solution (TOPSIS) to establish the SVUF assessment model. Zhengzhou City was taken as an example to verify the results of the model. The assessment results show that the Huiji District in Zhengzhou City has the lowest SVUF. Erqi and Zhongyuan Districts have similar SVUF, and both are at a medium level. Guancheng District has high SVUF. Jinshui District has the highest SVUF. Jinshui District is an old urban area with a large poor population, high unemployment rate, and old infrastructure, which makes its overall SVUF high and susceptible to flooding. This assessment model can provide a scientific basis for urban flood mitigation measures.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132177"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530893","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}

{"title":"Considerations in designing climate change assessments for complex, non-linear hydrological systems","authors":"Fiona Johnson ,&nbsp;Clare Stephens ,&nbsp;Martin Krogh","doi":"10.1016/j.jhydrol.2024.132182","DOIUrl":"10.1016/j.jhydrol.2024.132182","url":null,"abstract":"<div><div>Bias correction of climate model simulations is vital to allow climate change impacts to be assessed for water resources systems. However, there has been limited research to date on the implications of system non-linearity on bias correction approaches. Here we bias correct regional climate model simulations of precipitation and evapotranspiration and use the output to force hydrological and water balance models of five small, interconnected lakes located south west of Sydney. We show that substantial, non-linear storage within the lakes amplifies biases that are not evident when the climate forcing or even the hydrological model simulations are evaluated using daily distributions of the climate variables and streamflow.</div><div>The non-linearity in the stage-storage relationships of the lakes means that each lake responds differently to the same climate forcings. For example, ensemble mean projections for one lake suggest increases in water level across the full distribution of lake levels, whilst other lakes are projected to have decreasing water levels up to the median of the distribution, but increases during wetter conditions. These differences are explained by the varying influence of potential evapotranspiration increases depending on the surface area of the lakes at different depths. Using bottom up climate change assessments, we further explore these non-linear responses of the lakes to different climate forcings. We show that bottom up climate change assessments can provide information on the relative role of potential evapotranspiration changes compared to precipitation changes, providing more guidance to ecosystem managers than just using bias corrected climate model simulations alone. The paper discusses opportunities for future work to improve representation of climate attributes important for storage dominated water resource and natural ecosystems.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132182"},"PeriodicalIF":5.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analyzing the spatial scale effects of urban elements on urban flooding based on multiscale geographically weighted regression","authors":"Meimei Wu ,&nbsp;Xuan Wei ,&nbsp;Wei Ge ,&nbsp;Guixiang Chen ,&nbsp;Deqian Zheng ,&nbsp;Yang Zhao ,&nbsp;Min Chen ,&nbsp;Yushan Xin","doi":"10.1016/j.jhydrol.2024.132178","DOIUrl":"10.1016/j.jhydrol.2024.132178","url":null,"abstract":"<div><div>In the context of rapid urbanization and the frequent occurrence of extreme rainfall in cities, the risk of flooding in the future will further increase, and the problem of urban flooding cannot be ignored. Urban elements exhibit significant spatial heterogeneity, which largely determines the spatial distribution differences in urban flooding. Therefore, it is important to clarify the scale of influence of different urban elements and explore their scale effects on urban flooding to accurately assess the risk of urban flooding. Taking Zhengzhou City, China, as the study area, this study analyzed the urban elements associated with urban flooding, quantified the scale of the influence of urban elements on flooding using multiscale geographically weighted regression (MGWR), and further explored the spatial scale effects of urban elements on urban flooding. The results showed that MGWR can better fit the spatially non-uniform distribution of urban flooding and that the scale of the influence of urban elements on urban flooding can be reflected by the bandwidth of MGWR. The results of MGWR indicated that the bandwidths of elevation, number of drainage outfalls (NDO<span><span>¹</span></span>), distance to river (DR), Gross domestic product (GDP), proportion of residential land (PRL), and proportion of commercial land (PCL) were small, and their influence scales were localized. In contrast, the influence of rainfall return period (RRP), slope, proportion of industrial land (PIL), proportion of public service land (PPSL), proportion of road area (PRA), proportion of green land (PGL), input level of materials for flood control projects (ILMFCP), population density (PD), manpower input (MI), and investment level in education and research (ILER) were at global scales. The most influential factors for urban flooding were RRP, PD, and MI. Slope, DR, and PRA had less influence on urban flooding. This study helps improve the effectiveness of urban flood prevention and mitigation efforts.</div></div>","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"645 ","pages":"Article 132178"},"PeriodicalIF":5.9,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530378","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}