摘要
在对四川花萼山国家级自然保护区进行详细考察的基础上,结合相关文献资料,分析了花萼山保护区野生种子植物区系特性,并同周边6个地区进行了比较。结果表明:(1)四川花萼山国家级自然保护区区系成分复杂,类型丰富,区内有野生种子植物144科、810属、2 386种。有11个科的分布区类型,占中国范围内科分布区类型的73.33%;有15个属的分布区类型,占中国范围内属分布区类型的100.00%。(2)大科及大属的优势明显,种子植物区系较为古老,特有属比较丰富。(3)从科级水平上看,热带成分占60.71%,温带成分占38.39%;从属级水平上看,热带成分占38.32%,温带成分占56.34%。体现了该区从热带向温带过渡的性质。(4)与周边地区相比,花萼山与大巴山相似性最大,与伏牛山、青木川和小陇山相似性较小,其特有现象更明显,热带性质更明显。(5)花萼山的区系组成比大巴山、阴条岭和伏牛山简单,与五里坡和小陇山接近,比青木川复杂。
Based on close investigation and related data, the floristic characteristics of wild seed plants in Huaeshan National Nature Reserve of Sichuan were analyzed and were compared with that of six around districts. The results showed that. （1） the floristic composition is complex with various types. This area contains 2 386 wild seed plant species,which belong to 144 families and 810 genera. There are 11 distribu- tion types of family and 15 distribution types of genera,which account for 73.33% and 100.00% of the to- tal distribution types in China respectively. （2）The dominance of plurimotypic families and genera are obvi- ous,the flora is ancient with abundant endemic genera. （3）The tropical and temperate components account for 60.71% and 38.39% respectively on the family level,and account for 38.32% and 56. 34% respectively on the genus level. This reflected its transitional characteristic. （4） Compared with around districts, the flo- ristic composition of Huaeshan is highly similar to that of Dabashan,but is very different from that of Fu- niushan,Qingmuehuan and Xiaolongshan. Meanwhile, the endemism and tropical characteristics are more obvious in Huaeshan. （5） The floristic composition of Huaeshan is simpler than that of Dabashan,Yintiaol- ing and Funiushan,is similar to Wulipo and Xiaolongshan,and is more complex than Qimuchuan.
出处
《西北植物学报》
CAS
CSCD
北大核心
2015年第10期2103-2110,共8页
Acta Botanica Boreali-Occidentalia Sinica
基金
科技部国家科技基础平台国家标本平台-教学标本子平台运行服务项目(2005DKA21403-JK)
关键词
花萼山
种子植物
区系成分
大巴山脉
秦岭山脉
Huaeshan
seed plant
flora characteristics
Dabashan
Qinling Mountains
