Floristic analysis of the evergreen broad-leaved forest community from Jiulianshan National Nature Reserve in Jiangxi Province

Floristic composition of the evergreen broad-leaved forest in Jiulianshan Mountain was analyzed based on field investigation and community ecology.The community was rich in species diversity,with 144 spermatophyte families including 379 genera and 647 species,in which there were 6 gymnosperm families including 8 genera and 9 species,21 monocotyledon families including 77 genera and 116 species and 117 dicotyledon families including 294 genera and 522 species.Dominant families of the flora were Fagaceae,Lauraceae,Aquifoliaceae,Rosaceae,Ternstroemiaceae,Theaceae,Rubiaceae,Moraceae,and Euphoarbiaceae,most of which are tropical-and-subtropical distribution.As for family systematic distribution,the rate of genera of tropical-and-subtropical to temperate was 100:62.8 in 142 genera of 16 families.As for generic distribution in field investigation data,the tropical-and-subtropical areal type accounted for the majority of genera,in which there were 205 genera belonging to the tropical-and-subtropical areal type,131 genera belonging to the temperate areal type,35 genera belonging to the Cosmopolitan areal type and 8 genera belonging to the Endemic to China areal type.The rate of genera of the tropical-and-subtropical to temperate was 100∶63.9.Floristic composition of the evergreen forest community in Jiulianshan and the typical species of the zonal flora will provide scientific foundation for stand rehabilitation and stand establishment approximating to the natural evergreen broad-leaved forest community.This study also indicates that the sampled data based on community research are valid and convenient for floristic and environmental analysis of the evergreen broad-leaved forest community from Jiulianshan Mountain.