The content of this article comes from the "Surveying and Mapping Bulletin" No. 5, 2024, drawing review number: GS Jing (2024) No. 0777
Remote sensing information extraction of Sargassum in shallow sea near Daya Bay
LI Jun1,2, HE Yingqing1,2, DENG Ruru3, XIONG Longhai1,2, ZHANG Ruihao4
1. Key Laboratory of Pearl River Estuary Governance and Protection, Ministry of Water Resources, Guangzhou, Guangdong, 510611; 2. Pearl River Water Conservancy Research Institute, Pearl River Water Conservancy Commission, Guangzhou 510611, Guangdong, China; 3. School of Geography and Planning, Sun Yat-sen University, Guangzhou, Guangdong, 510006; 4. School of Geography and Tourism, Huizhou University, Huizhou 516007, Guangdong
Funds: Guangdong Water Conservancy Science and Technology Innovation Project (2023-01); Major Science and Technology Project of the Ministry of Water Resources(SKR-2022005); Guangzhou Science and Technology Program(2023A04J0942)
Key words: Sargassum, Marine benthic habitat, abundance, Nearshore shallow sea, Mixed pixel decomposition
Citation format: LI Jun, HE Yingqing, DENG Ruru, et al. Remote Sensing Information Extraction of Sargassum in Shallow Sea Offshore, Daya Bay[J]. Bulletin of Surveying and Mapping, 2024(5): 108-114.doi: 10.13474/j.cnki.11-2246.2024.0519
Abstract: Sargassum plays an important role in healthy coastal ecosystems. Remote sensing monitoring mostly focuses on floating sargassum in open seas, but less research on shallow benthic sargassum habitats. Most of the technical methods are based on empirical models and rely on a large amount of measured data. In this paper, based on the radiative transport process of water, a remote sensing information extraction model of sargassum was established. The results of three experiments in Daya Bay showed that: (1) The abundance distribution of Sargassum was basically consistent with the field survey data; (2) Sargassum in Daya Bay had better growth and higher abundance under the environmental conditions of high water openness, good water exchange conditions, certain wind and waves, and water depth less than 1.6 m. (3) Water depth and wave action are important environmental factors affecting the growth and distribution of Sargassum. The method proposed in this study has positive significance for the conservation of sargassum resources and the construction of coastal biodiversity.
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About author:LI Jun (1996—), male, master's degree, mainly engaged in water environment remote sensing research. E-mail:[email protected] Corresponding author: Deng Ruru. E-mail:[email protected]
First instance: Yang Ruifang review: Song Qifan
Final Judge: Jin Jun
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