Analysis of tidal creek morphology in the Yellow River estuary based on high-resolution remote sensing imagery

Jing Ma; Juan Wang; Xiaoli Song; Zheng Zhang; Xiaohui Gao; Xiaoqian Liu

doi:10.1117/12.3048848

27 November 2024 Analysis of tidal creek morphology in the Yellow River estuary based on high-resolution remote sensing imagery

Jing Ma, Juan Wang, Xiaoli Song, Zheng Zhang, Xiaohui Gao, Xiaoqian Liu

Author Affiliations +

Proceedings Volume 13402, International Conference on Remote Sensing, Mapping, and Geographic Information Systems (RSMG 2024); 134020U (2024) https://doi.org/10.1117/12.3048848
Event: International Conference on Remote Sensing, Mapping, and Geographic Information Systems (RSMG 2024), 2024, Zhengzhou, China

Abstract

In this paper, the distribution of tidal gully ecosystems in the Yellow River Estuary, from 2017 to 2023 was analyzed, and the distribution, change, stability and correlation between tidal gullies and salt marsh vegetation and ecological restoration projects were analyzed. (1) The total length of tidal ditch in 2021 is 793.64km, which is slightly higher than that of 701.33km in 2017, and the total length of tidal ditch in 2023 is 919.86km, which is a significant upward trend compared with 2021. (2) The overall curvature in 2017, 2021 and 2023 is 1.19, 1.18 and 1.16, respectively, and the overall curvature is slightly curved and the degree of bending gradually decreases. In 2017, 2021, and 2023, the tidal channel density was 1.91km•km^-2, 2.16km•km^-2, and 2.50km•km^-2, respectively. (3) From 2017 to 2023, the instability of tidal gullies increased, with 47% of the main tidal gullies belonging to stable tidal trenches, 49% belonging to unstable tidal trenches, and 4% of tidal gullies being severely unstable tidal trenches. (4) The density and length of the tidal channel had the same development trend with the area of Spartina alterniflora. From 2021 to 2023, the disappearance of 13 main tidal gullies, the severe instability of 2 main tidal gullies, and the disappearance of a large number of small tidal gullies in areas II and III may be related to anthropogenic restoration activities. The increase in the instability of some of the main tidal ditches in the northeast and southern ecological restoration areas of the Yellow River Estuary, and the increase in tidal gullies in areas II and III may be related to natural factors such as tides.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jing Ma, Juan Wang, Xiaoli Song, Zheng Zhang, Xiaohui Gao, and Xiaoqian Liu "Analysis of tidal creek morphology in the Yellow River estuary based on high-resolution remote sensing imagery", Proc. SPIE 13402, International Conference on Remote Sensing, Mapping, and Geographic Information Systems (RSMG 2024), 134020U (27 November 2024); https://doi.org/10.1117/12.3048848

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KEYWORDS

Vegetation

Analytical research

Remote sensing

Ecosystems

Diffusion

Environmental monitoring

Image analysis

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