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

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

doi:10.1007/s00343-020-0179-2

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

Geology | Updated：2023-05-20

- Sources of sediment in tidal flats off Zhejiang coast, southeast China
- Sources of sediment in tidal flats off Zhejiang coast, southeast China
- 海洋湖沼学报（英文） 2021年39卷第4期页码：1245-1255
- Affiliations：
  
  1.College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
  2.Department of Environmental & Geographical Science, University of Cape Town, Rondebosch 7701, South Africa
  3.Key Laboratory of Geographic Information Science, Ministry of Education, and School of Geographic Sciences, East China Normal University, Shanghai 200241, China
- Author bio：
  
  Jia JIA, E-mail:jiaj@zjnu.edu.cn
- Funds：
  
  the Natural Science Foundation of Zhejiang Province, China(LY20D040001);the National Undergraduate Innovation and Entrepreneurship Training Program of China;© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021
- DOI：10.1007/s00343-020-0179-2
  中图分类号：
- 收稿：2020-05-06，
  
  录用：2020-6-28，
  
  网络首发：2020-10-29，
  
  纸质出版：2021-07
- Accepted：
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Sources of sediment in tidal flats off Zhejiang coast, southeast China[J]. 海洋湖沼学报（英文）, 2021,39(4):1245-1255.

Jia JIA, Xingze ZHANG, Ruhui ZHOU, et al. Sources of sediment in tidal flats off Zhejiang coast, southeast China[J]. Journal of Oceanology and Limnology, 2021, 39(4): 1245-1255.
Sources of sediment in tidal flats off Zhejiang coast, southeast China[J]. 海洋湖沼学报（英文）, 2021,39(4):1245-1255. DOI： 10.1007/s00343-020-0179-2.

Jia JIA, Xingze ZHANG, Ruhui ZHOU, et al. Sources of sediment in tidal flats off Zhejiang coast, southeast China[J]. Journal of Oceanology and Limnology, 2021, 39(4): 1245-1255. DOI： 10.1007/s00343-020-0179-2.

摘要

Abstract

The growth of tidal flats off Zhejiang coasts in southwestern China has provided substantial areas for local agriculture and construction activities. To evaluate modern and future development of tidal flats in the region

a good understanding of sediment sources is necessary. Previous 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 decades. In 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 rivers. Magnetic and geochemical properties of the tidal flat samples reveal statistically distinct sediment provenance groups. The 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 areas. At 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 north. We 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.

关键词

Keywords

references

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