白马雪山国家级自然保护区植物多样性

Plant diversity of Baimaxueshan National Nature Reserve

通过多次对白马雪山国家级自然保护区进行野外实地考察、标本鉴定并查阅有关文献,运用吴征镒植物地理学的原理与方法全面系统地研究保护区植物区系,用计算机数据库程序建立1个有1674种植物地理成分数据库,植物区系统计分析均在数据库中进行。经统计保护区有种子植物135科,565属,1674种。经分析,保护区植物区系是温带山地性质,并兼有丰富的亚热带成分;区系成分新老兼备,分化复杂,以年轻成分为主;替代现象明显、特有现象显著;与北温带联系紧密,高山花卉和现代松柏类植物多样化中心;是中国低纬度高海拔地区植物资源保存比较完整而原始的地区。

Based on the multiple on-the-spot investigations in the field and specimen identification as well as relevant documents consultation, the flora of Baimaxueshan Nature Reserve was systematically studied by using the theory ＆ approach of Wu Zhengyi plant geography;and a database with 1 674 plant geographic elements, in which flora statistic analysis was conducted,was set up by computer database program. There are 135 families,565 genera and 1 674 spedes of seed plants in the reserve by statistics. The flora was analyzed as both temperate mountain characteristics and abundant sub-tropical elements. The flora has the characteristics of both old and new elements, complicated differentiation, young elements mainly,obvious substitution and endemism phenomena. It is the center of alpine flowers and current diversified pine and cypress plants. Moreover, it is the primitive region, in which plant resources of low latitude and high elevation preserved integrated.