Objective:In order to understand the diversity of wild medicinal plant resources in Nanji Is-lands and to provide a reference basis for the conservation and utilization of wild medicinal plant re-sources.Methods:The list of wild medicinal plants in Nanji Islands was determined through field in-vestigation and collation of relevant data.The R/T value,principal component analysis and hierarchical cluster analysis were applied to quantitatively analysis the transitional nature of wild medicinal plant flora of Nanji Islands and its relationship with the medicinal plant flora spectrum of adjacent areas and conducted analysis on the medicinal parts,taste,and functions of wild medicinal plants.Results:There were 382 species of wild medicinal vascular plants belonging to 275 genera and 89 families in Nanji Islands,with angiosperms being predominant.Asteraceae,Gramineae and Leguminosae were the dominant families.Perennial herbaceous medicinal plants were predominant in life form.The flora showed obvious tropical characteristics(R/T=1.61),mainly composed of Pantropic,supplemented by North Temperate,and showed a certain transitional characteristic.Meanwhile,the results of princi-pal component analysis and cluster analysis showed that the medicinal plant flora of the Nanji Islands was more similar to that of the Huaniao Island,both being islands,which might be related to their geo-graphical locations and intense human disturbances.Medicinal parts of wild medicinal plants included the whole plant,roots,and leaves,account for a large proportion,respectively occupying 63.35%,31.41%,and 26.96%of the total species.Bitter-tasting wild medicinal plants accounted for the highest proportion,accounting for 59.95%in all species.Medicinal functions of wild medicinal plants related to detoxification,insecticidal,and anti-itch properties account for the largest proportion,representing 21.32%of the total species.Conclusion:The species composition of wild medicinal plant resources in Nanji Islands is rich,and the dominant taxa were obvious,which had high development and utilization value.Strengthen the cultivation of dominant species and the protection of dominant taxa to limit the impact of invasive alien plants.It was of great significance for rational development and effective pro-tection of wild medicinal plant resources in Nanji Islands.
维普
万方数据
