{"title":"Cumulative impact of human activities on hydro-sediment dynamics and morphodynamics in the highly altered Yangtze Estuary","authors":"Xiangju Han, Daidu Fan, Ju Huang, Junbiao Tu, Lingpeng Meng, Shenliang Chen","doi":"10.1016/j.jhydrol.2024.132625","DOIUrl":null,"url":null,"abstract":"Estuarine dynamics is influenced not only by upstream human activities but also significantly by large-scale estuarine engineering projects (LSEPs). In recent decades, multiple LSEPs have been constructed in the Yangtze Estuary, and the impacts of single project have been well studied, but their cumulative impacts remain elusive. This study investigates Yangtze Estuary morphological changes from 1958 to 2020 by chart bathymetric data. Results reveal a shift from rapid accretion (1958–1983) to moderate accretion (1983–2011), and then to moderate erosion (2011–2020), almost coeval with declining fluvial sediment discharge in response to the upstream human disturbances. Moreover, increasing LSEPs have complexified estuarine erosion and deposition patterns over local to regional scales in the past two decades.","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"50 1","pages":""},"PeriodicalIF":5.9000,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1016/j.jhydrol.2024.132625","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0
Abstract
Estuarine dynamics is influenced not only by upstream human activities but also significantly by large-scale estuarine engineering projects (LSEPs). In recent decades, multiple LSEPs have been constructed in the Yangtze Estuary, and the impacts of single project have been well studied, but their cumulative impacts remain elusive. This study investigates Yangtze Estuary morphological changes from 1958 to 2020 by chart bathymetric data. Results reveal a shift from rapid accretion (1958–1983) to moderate accretion (1983–2011), and then to moderate erosion (2011–2020), almost coeval with declining fluvial sediment discharge in response to the upstream human disturbances. Moreover, increasing LSEPs have complexified estuarine erosion and deposition patterns over local to regional scales in the past two decades.
期刊介绍：
The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.
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