Forest Plant Flora in Northeastern Rural Area of Hainan Island
The vegetation in northeastern rural areas of Hainan Island has been widely disturbed by human activities,and the distribution of plant resources in these areas is associated with the ways of resource utilization.To explore the characteristics of forest plant flora in northeastern rural areas of Hainan Island,the forest plant resource around 23 villages of Wenchang County and Qionghai County were studied based on the literature collection and plot survey.Results showed that the forest vascular plants in these areas were 967 species,including 39 fern species,4 gymnosperm species and 924 angiosperm species.The family with less than ten plant species,especially the family with one plant species,accounted for the largest proportion among the family distribution types.The percentage of the family(i.e.with one plant species) in this area was near to that of Jianfengling Mt.,while it was 8% higher than that of Wuzhishan Mt.The tropical and subtropical distribution type dominated the geographic elements of family.Among the distribution type of genera,the genera with less than 6 species accounted for the largest proportion,which occupied 45.62 percent of genus of Hainan Province.Moreover,the pantropical distribution type dominated of the geographic elements of genera.