Sources of sediment in tidal flats off Zhejiang coast,southeast China

作     者：Jia JIA Xingze ZHANG Ruhui ZHOU Michael MEADOWS Dhritiraj SENGUPTA Lidong ZHU Jia JIA;Xingze ZHANG;Ruhui ZHOU;Michael MEADOWS;Dhritiraj SENGUPTA;Lidong ZHU

作者机构：College of Geography and Environmental ScienceZhejiang Normal UniversityJinhua 321004China Department of Environmental&Geographical ScienceUniversity of Cape TownRondebosch 7701South Africa Key Laboratory of Geographic Information ScienceMinistry of Educationand School of Geographic SciencesEast China Normal UniversityShanghai 200241China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2021年第39卷第4期

页      面：1245-1255页

核心收录：

学科分类：070704[理学-海洋地质] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 

基　　金：Supported by the Natural Science Foundation of Zhejiang Province,China(No.LY20D040001) the National Undergraduate Innovation and Entrepreneurship Training Program of China 

主　　题：tidal flats Zhejiang coastal area magnetic and geochemical characteristics sediment source tracing 

摘      要：The growth of tidal flats off Zhejiang coasts in southwestern China has provided substantial areas for local agriculture and construction *** evaluate modern and future development of tidal flats in the region,a good understanding of sediment sources is *** research has concluded that the Changjiang(Yangtze)River is the dominant supplier of sediments to this part of the southeast Chinese coast,despite the fact that sediment delivery from this source has been decreased markedly in the past two *** this study,we investigated the sources of tidal flat sediments,and the magnetic and geochemical properties of recent tidal flat sediments along the Zhejiang coast were compared with those discharged from *** and geochemical properties of the tidal flat samples reveal statistically distinct sediment provenance *** magnetic and geochemical scatter plots show that the suspended sediment samples are naturally divided into two different groups,one including the Changjiang River and Qiantang River material,and the other including the Jiaojiang,Oujiang,and Feiyun Rivers that located in the central and southern parts of the study *** last,a binary source of tidal flat sediments along the Zhejiang coast was determined,with the substantial majority originating from local rivers,while a much smaller proportion emanates from the Changjiang River to the *** conclude that the sediment contribution of the Changjiang River to tidal flat development in the region has been markedly overestimated,with important implications for management.