Studies on distribution characteristics of sargassum in Dongjiao coconut forest based on UAV aerial survey technology
CAI Shaomeng
CHEN Chunhua
LIU Jianbo
SONG Changwei
Abstract：Through the research,the resource distribution of Sargassum in the survey area was ob-tained,which also provided a basis for the calculation of seagrass coverage and ecological monitoring in the survey area.High definition aerial image of Sargasso distribution was obtained by using UAV aerial survey technology in the coastal area of Dongjiao coconut forest of Wenchang City,Hainan Province,at lowest tide of spring tide.It was shown that there was the dense distribution area of Sargasso in the southeast of the survey area,which was richer in coral reefs and rock reefs,and the dense distribution area of seagrass in shallow water,which was mixed with a small amount of Sargasso distribution.The Sargassum distribution was studied by using the Arcgis software supervised classification tool maxi-mum likelihood classification method and the 3D analysis tool isoline tool.It was concluded that there were about 2,924 Sargassum species in the study area with an area of 755.6 m2 and a coverage of 0.5％.According to the field investigation,three species of Sargassum were found,namely Sargassum euryphyllum,S.polycystum and S.duplicatum,with an average plant height of about 30 cm and floating growth alone.
Keywords：UAV aerial surveyDongjiao coconut forestinshore sea areasargassumdistribution characteristics
Publication Date：2025-04-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 127-134 )