甘肃连城自然保护区8种主要森林类型的植物物种多样性研究  

Plant Species Diversity of 8 Major Forest Types in Gansu Liancheng National Nature Reserve

作　　者：王德国[1] 邢韶华[1] 崔国发[1] 华发春 张育德 满自红 

机构地区：[1]北京林业大学自然保护区学院,北京100083 [2]甘肃连城国家级自然保护区管理局,甘肃兰州730333

出　　处：《西部林业科学》2008年第3期51-55,共5页Journal of West China Forestry Science

基　　金：三北地区森林和荒漠类型自然保护区监测项目(国家林业局课题)

摘　　要：应用调查所获的物种丰富度指数(S)、Simpson指数、Shannon-Wiener指数和Pielou指数研究分析了甘肃连城国家级自然保护区8种主要森林类型的植物物种多样性特征。研究结果表明:8种主要森林类型乔、灌、草3层植物物种多样性最高的类型是红桦林、青杄林和祁连圆柏林;在其不同的森林层次上,物种丰富度指数S、Simpson指数和Shannon-Wiener指数表现出乔木层<灌木层<草本层的特点;8种主要森林类型乔木层的Shannon-Wiener指数随其垂直分布海拔高度的变化不明显,而灌木层和草本层的Shannon-Wiener指数总体呈现出随垂直分布海拔高度的上升先升后降的规律,即其最高值出现在此几种主要森林类型垂直分布的中段。The plant species diversities of 8 major forest types in Gansu Liancheng National Nature Reserve were studied by calculating and analyzing the species richness index, Simpson index, Shannon -Wiener index and Pielou index. The study results showed that Betula albo-sinensis forest, Picea wilsonii forest and Sabina przewalskii forest had the highest diversity in tree layer, shrub layer and grass layer respectively. The species diversity index, Simpson index and Shannon-Wiener index showed the characteristics of tree layer 〈 shrub layer 〈 grass layer. The Shannon-Wiener index of tree layer did not obviously change with the alleviation. As the alleviation increase, the Shannon-Wiener index of shrub layer and grass layer showed the tendency of increase first and then decrease. The highest value of biodiversity occurred in middle point of alleviation range.

关 键 词：甘肃连城自然保护区 森林类型 植物物种多样性 

分 类 号：S759.9[农业科学—森林经理学]