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Abstract Understanding the current situation of plant resources is of great significance to the community composition，structural characteristics and change trend of local plants. This paper used the forest plant community on the coast of Dameisha, Shenzhen as the research object. Bascd on sample method, x2test and principal component analysis method, the community characteristics of Dameisha coastal forest plants were revealed. The results show that there are 172 genera and 228 species of 83 vascular plants in the sample area of 4 400 m2; of which there are 162 genera of angiosperms, 211 species in 74 families,2 genera and 3 species of gymnosperms, and 14 species in 7 families of ferns. The species richness index is shrub layer > tree layer > herbal layer Schefflera rubriflora and Machilus chinensis are the main group specics. Psychotria asiatica and Liriope spicata are dominant species in the shrub layer and herb layer,respectively. The proportion of the middle path level ( DBH < 20 cm) is high, and the phenomenon of community stratified formation is not obvious. The appearance of the community is a subtropical evergreen broad-leaved forest.The overall connection among dominant spccics of the tree layer is not significantly positively connected, and the community stability is low. The coastal forest plant community in Damesa Scenic Area is unstable, and some areas are man-madely disturbed. In order to promote the construction of coastal forest vegetation, it is recommended to combine forest phasc transformation and local advantageous species planting, such as Machilus chinensis,Triadica cochinchinensis and so on.
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2024, Vol. 37 
