Study on the relationship between tidal creeks divergence, vegetation and topography based on UAV remote sensing

Huang Wanchun; Li Yufeng; Zhou Shiwei; Zhou Yong; Zhang Yue; Li Lin; Liu Hongyu

doi:10.12284/hyxb2023068

Volume 45 Issue 5

May 2023

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Huang Wanchun，Li Yufeng，Zhou Shiwei, et al. Study on the relationship between tidal creeks divergence, vegetation and topography based on UAV remote sensing[J]. Haiyang Xuebao，2023, 45(5)：107–117 doi: 10.12284/hyxb2023068

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Study on the relationship between tidal creeks divergence, vegetation and topography based on UAV remote sensing

doi: 10.12284/hyxb2023068

School of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China

Received Date: 2022-06-01
Rev Recd Date: 2022-12-05

Available Online: 2022-12-19

Publish Date: 2023-05-01

Abstract

Abstract

As an important material, energy and information exchange channel between land and sea, the development of the tidal creek would determine the vegetation growth and succession on the tidal flats. The growth of vegetation would also influence the evolution of the tidal creek and the topography. The aim of this study was to investigate the distribution of tidal flats vegetation types in the Yancheng coastal wetland, Jiangsu Province and their influence on tidal creek development. Through the UAV technology, the inversion of the tidal flats topographic elevation model and the extraction of vegetation information, it observed the tidal flats of southern Tiaozini. The results showed that: (1) with the expansion of the cordgrass (Spartina alterniflora) community, the original salt marsh vegetation on the tidal flats appeared to shrink in patches; (2) as the tidal channel extended inland, the bottom of the channel was gradually occupied by cordgrass which showed an obvious distribution along the tidal creeks; (3) there were littoral ridges on both sides of the tidal creek, and cordgrass has the effect to uplift the terrain of the topography of tidal creeks and the tidal flat nearby. The development of tidal creeks would accelerate the invasion of cordgrass, and its invasion can change the original topography and vegetation compositions of the tidal flats. This contributed to the understanding of how tidal creeks affected the distribution of vegetation populations as they developed on the tidal flats. It demonstrated the inverse effect of vegetation distribution on the tidal creek development. The study could provide some reference for the local management of cordgrass and the use of drone technology in it.
- tidal flats vegetation,
- coastal wetlands,
- unmanned aerial vehicle,
- topography,
- tidal creek

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References(32)

References

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