Advances in the study of submarine groundwater discharge(SGD)in China

作     者：Yan ZHANG Xuejing WANG Yan XUE Changpei ZOU Manhua LUO Gang LI Lei LI Laitong CUI Hailong LI 

作者机构：School of Water Resources and EnvironmentChina University of Geosciences-BeijingBeijing 100083China School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2022年第65卷第10期

页      面：1948-1960页

核心收录：

学科分类：081803[工学-地质工程] 07[理学] 08[工学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.42007170&42130703) the Science,Technology and Innovation Commission of Shenzhen(Grant No.20200925174525002) 

主　　题：Submarine groundwater discharge(SGD) Radium isotopes Nutrients Ecosystems Environmental effects 

摘      要：Submarine groundwater discharge(SGD)is a critical land-ocean process in coastal areas and an essential component of the global hydrological ***,hydrologists and oceanographers are paying more attention to *** transports large amounts of materials into the ocean,including nutrients,carbon,and metals,and thus plays a vital role in the cycling of marine materials and affects the ecological environments of nearshore *** study examined the research status of SGD and its environmental effects in China,including a systematic analysis of radium activities and nutrient contents in groundwater,SGD rates,and the contribution of SGD to nutrients in various coastal ecosystems(bays,estuaries,continental shelves,and lagoons).The results showed the median concentrations of groundwater nutrients(dissolved inorganic nitrogen DIN,dissolved inorganic phosphorus DIP,and dissolved inorganic silicon DSi),SGD rates,and SGD-derived DIN and DIP in estuarine areas far exceeded those in the other three ecosystems *** result could be attributed to the complex hydrodynamic conditions of estuary areas as well as the considerable influence of human ***,the lowest SGD rates and three inorganic nutrient species via SGD were observed in large scale continental ***-derived nutrient fluxes were comparable to riverine inputs along the entire coast of China,which significantly affected the nutrient budget,nutrient composition,and primary productivity of coastal ***,this review suggests further research of SGD in three aspects:(1)accurate assessment,(2)its environmental effects,and(3)its regulatory strategies.