四川西部亚高山暗针叶林生态系统结构与功能的研究——卧龙地区木本植物区系分析

通过对四川卧龙地区木本植物类群的详细调查和对过往研究资料的系统收集、统计分析 ,表明 :卧龙地区有木本植物 83科、2 2 4属和 6 84种 (含种以下等级 ,不含栽培种 ) ;卧龙地区以温带成分为主 ,占总属数 5 8 33% ,热带成分占 36 5 6 % ;卧龙地区稀有濒危植物、单种属、少种属、中国特有属均占较大比重 ,说明其历史起源的古老性 ;卧龙林区木本植物地理成分复杂 ,联系广泛 ,分布交错 ,特别是热带、亚热带科、属中耐寒种类及中国西南特有成分的增多 ,为“川西山地欧亚大陆热带、亚热带的高山温带成分的发源地”提供了有力证据。

The Structure and Function of Subalpine Dark Coniferous Forest Ecosgstem in West Sichuan--Analysis of the Woody Plant Flora at Wolong Region

The woody plant group in Wolong region were not only investigated in datail, the research data in or of the past and now were but also collected, counted and analysised. The results have shown that there were 83 families, 224 genera, 684 species (incuding in fraspecific taxon and not incuding cultivar) of woody plants at Wolong region. The flora analysis inclicated that the temperate zone elements were dominate 58.33% of the whole genera and the tropical elements took 36.56%. The rare and endangered plants, the genera of simple species and the minor species, and the Chinese endemic genera occupied a large propertion. This reflected the ancient characteristics of the historical origin of the species at the region. There were the complicacy, extensive contact, and alternate distribution of every kind of geographic elements at the region, and it is a specific to extend the cold-resistant species of tropical, subtropical elements and the Southwest Chinese endemic elements, all above provide engough supports for the viewpoint that the alpine temperate elements of the tropical, subtropical region in Eurasia originate in West Sichuan Mountains.