五大连池新期火山熔岩台地维管束植物物种多样性

在野外调查的基础上,对五大连池新期火山熔岩台地维管束植物物种多样性进行了统计分析,结果表明:(1)五大连池新期火山熔岩台地共有维管束植物35科66属82种,9个优势科含有的属、种数分别占总属、种数的51.52%和57.32%;该研究区熔岩台地种子植物有30科、61属和75种的分布区类型,温带成分占主体;植物资源按其性质和用途分为药用、观赏和蜜源等12类。(2)根据Raunkiaer生活型分类,以地面芽植物的草本植物最占优势,其次为高位芽植物的乔木和灌木。(3)在水分生态类型中,中生植物是主要生态类型,旱生植物占较高的比例。研究认为,五大连池新期火山熔岩台地熔岩新、风化弱、降水大部分渗流、蒸发强等极不利生态条件形成了火山熔岩石生植物的特有种群。

Species Diversity of Vascular Plants in New Stage Volcanic Lava Plateau in Wudalianchi

Based on field investigation, we statistically analyzed the species diversity of vascular plants in the new stage volcanic lava plateau in Wudalianchi, The results show that:(1)there are 35 families, 66 genera and 82 species in volcanic lava plateau. Dominant families have areal types of 34 genera and 47 species, which accounted for 51.52% and 57.32% of total genera and total species; There are 30 families, 61 genera and 75 species in seed plants, which is absolute advantage of temperate distribution; Plant resources can be divided into 12 classes on nature and application, such as medicinal, ornamental honey and so on;(2)On classification of Raunkiaer life form, herb with hemirvphytes is the most dominant, the next are trees and shrubs with phanerophytes;(3)In the ecological types of water, the mesophytes is the most, and the xerophytes is more. Because of unfavorable ecological conditions, such as the new lava, weak weather, rainfall seepage and stronger evaporation, these are lithophytes and specific plants in volcanic lava.