摘要
四川省马鞍山自然保护区分布有种子植物有128科606属1551种103变种,其中裸子植物5科12属25种.单型和少种的科属众多,含20种以上的大科和大属也很丰富.大型科和少种属是区系的主体,所含种数包含区系总种数分别达63.31%和68.23.特有、孑遗植物和原始类群丰富,区系起源古老;变种多,分化水平较高;科的分布类型具有明显热带性质,而属的分布类型却以温带分布为主.
There are 128 families,606 genera,1 551 species and 103 varieties in seed plant flora of Maanshan Nature Reserve in Sichuan province,including 4 families 12 genera 25 species Gymnosperms. The rictmess of relic endemic compositions shows that the seed plants flora in Ma-Reserve is old and primitive. The monotypic and oligotypi, families and genera are rich in the region, meanwhile the families and genera containing more than 20 species are very luxuriant in its flora also. The familie with more than 20 species and less than 10 species genera are the main composition, which is about 3.3 1 % and 68.23 % of the total species in the flora. The richiness of varieties shows the higher differentiation of seed plants. The areal-types of families are mainly tropical, but those of genera a typical temperate one.
出处
《西华师范大学学报(自然科学版)》
2009年第3期259-264,共6页
Journal of China West Normal University(Natural Sciences)
基金
"WWF"马鞍山省级自然保护区综合科学考察项目资助(2008)
关键词
马鞍山自然保护区
种子植物区系
区系特征
统计与分析
Maanshan Nature Reserve
seed plants
floristic characteristics
statistics and analysis