选择祁连山保护区6个自然保护站具有代表性的青海云杉林设置400 m2的样地16块，对植物 种数(S)、属数(G)、科数(F)、种数/属数(S/G)、种数/科数(S/F)、属数/科数(G/F)和S、G、F占总 种数(ST)、总属数(GT)、总科数(FT)比例的垂直分布格局进行了研究。结果表明：青海云杉林共有 维管植物96种，隶属25科52属，占祁连山保护区维管植物总种数(1 305种)的7.35 %，总属数(445 属)的11.69 %，总科数(92科)的27.13 %，有较高的多样性；沿海拔梯度的升高，S、G、F呈单调下 降趋势，S/G呈增加趋势，S/F、G/F、S/ST、G/GT、F/FT呈降低的趋势。不同林型的综合丰富度从 大到小为：青海云杉混交林、马先蒿-青海云杉林、草类-青海云杉林、灌木-青海云杉林、苔藓-青 海云杉林；沿着海拔梯度的升高，不同林型的丰富度表现出不同的变化趋势。
Abstract
Based on the data collected from the 16 sampling plots which was 400 m2 per plot and selected from representative Picea crassifolia forest in six natural reserve stations, the vertical distribution pattern of plant species(S), genera(G), families (F), species/ genera(S/G), species / families(S/F), genera/ families(G/F), plant species/ the total of species(S/ST), genera/total genera(G/GT)and families/ total families(F/FT) were studied in Qilianshan National Nature Reserve. The results showed that: there were 96 species of vascular plants in P.crassifolia forest, which belonged to 25 families and 52 genera, it were 7.35 % of the total vascular plant species(1 305), 11.69 % of the total genera(445), 27.13 % of the total families(92) and showed a higher diversity; as the higher of the altitude, S, G, F showed a monotonously downward trend, S/G showed an increasing trend, S/F, G/F, S/ST, G/GT, F/FT showed a lower trend. The integrated richness of different forest types from largest to smallest is: P.crassifolia mixed forest, lousewort and P.crassifolia forest, grasses and P.crassifolia forest, shrubs and P.crassifolia forest, moss and P.crassifolia forest. As the elevation increased, the richness of the different forest types showed different variation trend.
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基金
收稿日期：2009-09-17修回日期：2010-02-28基金项目：甘肃省科学事业费 资助项目(甘科计字[2002]23)作者简介：刘建泉(1963—)，高级工程师，硕士。Email: liujq36@163.com。引文格式：刘建泉,郝虎,王学福. 青海云杉林种、属、科丰富度的垂直分布格 局[J]. 南京林业大学学报:自然科学版,2010,34(4):97-101.
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