Long term evolution of tidal flat at the center of Jiangsu Province and the influence of Spartina alterniflora growth

被引：0

作者：

Gong Z. ^{[1
,2
]}

Shi L. ^{[2
,3
]}

Jin C. ^{[2
]}

Zhang Q. ^{[2
]}

Zhao K. ^{[2
]}

机构：

[1] State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing

[2] Jiangsu Key Laboratory of Coast Ocean Resources Development and Environment Security, Hohai University, Nanjing

[3] Zhejiang Institute of Hydraulic and Estuary (Zhejiang Institute of Marine Planning and Design), Hangzhou

来源：

Shuikexue Jinzhan/Advances in Water Science | 2021年 / 32卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Morphological evolution; Mudflat; Salt marsh; Spartina alterniflora; Tidal flat resources;

D O I：

10.14042/j.cnki.32.1309.2021.04.013

中图分类号：

学科分类号：

摘要：

A series of benchmarks were setup on the south Chuandong tidal flat (Yancheng, Jiangsu). Monthly observation of the surface elevation has been performed for 7 years (October 2012 to November 2018) using the Rod Surface Elevation Table(RSET). The edge of the Spartina alterniflora was obtained from the remote sensing images. The long-term evolution of the mudflat and the influence of growth of Spartina alterniflora were evaluated. Results show that:the subsurface processes (e.g., soil expansion and compression) is the key factor affecting the evolution of mudflat at the highest position of the tidal flat. The growth of salt marsh increases the amount of sediment deposition. With the propagation of the edge of salt marsh, the annual sediment deposition at the central salt marsh decreases gradually. In the vicinity of the frontier of the salt marsh, the annual siltation volume increases. Even though, the bare flat evolution trend is hardly affected by the advancing of salt marsh. From the landside to seaside, the cross-shore profile can be divided into 4 zones, which are erosion-deposition balance, rapid deposition, erosion-deposition balance and rapid erosion zones, respectively. The slope of the intertidal flat increases evidently. The tidal flat resources decrease constantly in the past 7 years. © 2021, Editorial Board of Advances in Water Science. All right reserved.

引用

页码：618 / 626

页数：8

共 28 条

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