阿尔金山自然保护区植物物种多样性分析

我国西北羌塘高原的阿尔金山自然保护区，计有种子植物２６０种，隶属于３１科、１０８属。在区系组成上，以北温带成分占绝对优势，华夏成分占显著地位；组成群落的优势植物为青藏高原或青藏高原—帕米尔—亚洲中部高山成分，且为适应高原隆起发展起来的年轻成分。该保护区由于地处极端的高寒位置，故蕴育出了耐高寒、抗干旱及抗紫外线的饲用植物、药用植物、花卉及谷类作物野生近缘种等极端环境植物资源。

Plant Species Diversity in the Arjin Mountain National Nature Reserve Areas

The Arjin Mountain National Nature Reserve Areas consist of 260 plant species belonging to 31 families and 108 genera,among which the dominant species are in the order of Gramineae Cruciferae,leguminosae,Compositae and Cyperaceae and so on According to the analysis of the plant species in the reservation areas,the elements of the Qinghai Tibet flora or those of the Pamirs Qinghai Tibet Central Asia alpine flora occupy a dominant place among the plants The proportion of the younger plant elements is getting larger than the uplift of the plateau,and the community seccession and replacement of species appear distinct The reserve is rich in alpine cushion plants with ediforcator or companion species as its main elements The changeable landform,hydrogeology and biological climate form the diversified plant community types with alpine arctic steppe,alpine deserts,alpine arctic bushes,gross raised bog meadow,raised sillnized depressed meadow and halophytic desert In addition,this extreme environment brings on an abundant plant resources,such as the feedstuff plants of anti drought,resist frigid and antiultraviolet radiation,the medicine plants,the wild blossom and the wild similar species of wheat crop