江西婺源森林鸟类自然保护区种子植物区系分析

Flora analysis of seed plants in Wuyuan forest birds nature reserve

在野外调查及查阅相关资料的基础上,对婺源森林鸟类自然保护区的种子植物资源进行区系分析。结果表明:(1)区内植物种类丰富多样,共有种子植物1 724种,隶属于194科732属。其中裸子植物8科13属16种,被子植物186科719属1 708种。(2)区内种子植物科属的组成较为分散,植物成分较为复杂。在科的组成结构上,少种科的数量最多,占54.64%。但包含植物种类最多的是较大科,占总种类的29.23%。在属的组成结构上,则主要以少种属和单种属为主,分别占比32.79%和55.87%。(3)区内种子植物区系成分复杂。热带分布类成分相对占优势,有297属,占总属数的40.57%。其次是亚洲分布类有196属,占26.78%。此外温带分布类含173属,占23.63%;世界分布类有66属,占9.02%。(4)将婺源种子植物与邻近的四个地区进行比较。5个地区中世界分布类和亚洲分布类所占比值大致相当,但热带类和温带类所占比值则有较大差异。热带分布类成分最多的婺源,占比值为40.57%,最少的黄山只有31.82%。温带分布类成分最多的黄山,占比值为29.31%,最少的婺源只有23.63%。

The area types analysis of the seed plant was done based on field investigation and relevant information about Wuyuan forest bird nature reserve. The results showed that： （1） There are 1 724 species of seed plants in this region, belong to 194 families and 732 genera, including 8 families,13 genera, 16 species of gymnosperm and 186 families, 719 genera, 1 708 species of angiosperms. （2） The composition of the seed plants in this region is highly dispersed and very complex. In the composition of the families, the number of small families is the most, which rate is 54.64%. However, the major families contain the largest number of plant species, the rate is 29.23%. In the composition of the genus, species focus on the small genera and the single genus that accounted for 32.79% and 55.87%. （3） The flora of seed plants in this region is complex. There are 297 genera, 40.57% genera of the total, in the tropical distribution. Followed by the Asian distribution of 196 genera, accounting for 26.78%. In addition, the temperate distribution including 173 genera, 23.63%of the total and the world distribution including 66 genera, accounting for 9.02% of the total. （4） Comparison of other 4 regions in the same latitude of Wuyuan forest birds nature reserve. In the 5 regions, the proportion of the world distribution and the Asia distribution is roughly equal, but there is a large difference between the tropical distribution and temperate distribution. Wuyuan, which contain the highest ratio of tropical distribution, 40.57% of the total, and in the least Huangshan the ratio is only 31.82%. Temperate distribution has the highest ratio 29.31% of Huangshan, and the least 23.63% of Wuyuan.