海南国家公园五指山片区濒危稀有药用植物组成及评价OA

Due to its unique geographical and climatic conditions,the Wuzhishan Section of Hainan National Park is rich in endangered and rare medicinal plant resources.Based on quadrat surveys and literature analysis,this study systematically evaluated the composition and conservation priorities of 43 endangered medicinal plant species in this area.An evaluation system was constructed using the endangerment coefficient(Ct),genetic value(Cg),and species value(Cs)to calculate the value of conservation priority(Vs)and classify the conservation grades.The results showed that there were 18 Grade Ⅰ species(Vs≥0.625,accounting for 41.86%),21 Grade Ⅱ species(0.500≤Vs<0.625,accounting for 48.84%),and 4 Grade Ⅲ species(Vs<0.500,accounting for 9.30%).In terms of life forms,arbor species accounted for 72.09%;branches and leaves(26.56%),and fruits and seeds(25.00%)were the main medicinal parts.It is suggested that laws and regulations should be strengthened,protected areas established,artificial cultivation promoted,and monitoring and sustainable utilization enhanced to cope with the dual threats of climate change and human disturbance.