Species Composition and Main Floristic Distribution of Juglans mandshurica Community in Jilin Province
Based on the investigations for main distribution area of Juglans mandshurica community in Jilin Province,there were 58 families 137 genera 186 species of vascular plants,the amount of which was the largest in Yanbian,followed by Jilin and Baishan successively. The composition similarity was the highest in Jilin-Yanbian Area,there was relatively low in Yanbian-Baishan Area and Jilin-Baishan Area. The compositions of families and genera were mostly the families as of only one species well as the genera of only one species in all areas,and the species compositions were dispersal. The total distribution of Juglans mandshurica community was almost same in different areas,with the north temperate primarily,besides tropics,the old world tropics,and East Asia & North America accounted for a proportion,which suggested the compositions of vascular plants,ancient and relatively comprehensive,had a early relation with the tropics history. In addition, cosmopolitan was a significant part of Juglans mandshurica community floristic, it was the secondary vegetation in the long history. T/R of the community in Jilin, Yanbian and Baishan was 4. 73,6. 41,9. 33 respectively, with strongly temperate floristic compositions.
国家科技期刊平台
NSTL
万方数据
维普
