浙江省遂昌县桂洋林场种子植物区系特征及应用价值
Floristic Characteristics and Application Value of Seed Plants in Guiyang Forest Farm, Suichang, Zhejiang

采用典型取样法对桂洋林场样地内种子植物的组成进行调查，分析其多样性及区系成分特征。结果表明桂洋林场种子植物共346种，隶属104科202属。从科级水平看，以单种科最多，共45科，占总科数的43.27%，其次是寡种科，占总科数的36.54%，大科最少，仅7科，占总科数的6.73%；从属级水平看，单种属135属，占总属数的66.83%。科的分布区类型，热带性地理成分46科，占总科数的44.2%，温带成分20科，占总科数的19.2%，说明科的地理成分具有较强的热带性质。属的分布区类型，热带分布类型77属，占总属数的38.1%，温带分布类型93属，占总属数的46.0%，说明具有温带和亚热带性质。本次调查中国特有属有4属，未发现中国特有科。本次研究还对桂洋林场7类资源植物进行介绍，提出植物资源的保护与开发利用建议。
The composition of seed plants in the plot of Guiyang forest farm was investigated by typical sampling method, the diversity and floristic composition characteristics were analyzed. The results showed that there were 346 species of seed plants in Guiyang Forest Farm, belonging to 104 families and 202 genera. From the perspective of family level, single-species families were the most, with a total of 45 families, accounting for 43.27% of the total families, followed by oligospecies families, accounting for 36.54% of the total families, and large families were the least, only 7 families, accounting for 6.73% of the total families. At the genus level, there are 135 genera of single species, accounting for 66.83% of the total genera. There are 46 tropical geographical elements, accounting for 44.2% of the total number of families, and 20 temperate elements, accounting for 19.2% of the total number of families, indicating that the geographical elements of the family have strong tropical properties. The distribution type of genera, tropical distribution type 77 genera, accounting for 38.1% of the total number of genera, temperate distribution type 93 genera, accounting for 46.0% of the total number of genera, indicating that there is a temperate zone. And subtropical properties. There are 4 genera endemic to China in this survey, and no families endemic to China were found. At the same time, seven kinds of resource plants in the forest farm were introduced, and suggestions for the protection and development and utilization of plant resources were put forward.