摘要
在样地调查的基础上,采用Simpson指数、Shannon-Wiener指数、Margalef指数和Pielou指数对北京九龙山自然保护区植物群落的多样性进行评价,并采用灰色关联法分析了物种多样性的影响因素。结果表明:(1)研究区建群种为黄栌和侧柏,灌木层均以荆条为主,草本层多分布披针叶苔草、求米草、线叶猪秧秧、北京隐子草等;(2)群落总体多样性显示,样地3的Simpson指数和Shannon-Wiener指数最大,样地7的Margalef指数最高,样地5的Pielou指数最大;(3)群落多样性指数受环境因子影响显著,其中Simpson指数、Shannon-Wiener指数和Margalef指数受坡向影响最大,Pielou指数受坡度影响明显。
Through the typical sampling investigation,species diversities of plant communities in the Jiulongshan Nature Reserve were evaluated by using Simpson dominance index,Shannon-Wiener diversity index,Margalef abundance index and Pielou uniformity index.And the grey relation method was used to analyze the influence factors of species diversity.The results showed that:(1)cotinus coggygriaand Platycladus orientalis were constructive species in the study area,Vitex negundo var.heterophylla was dominant shrub species,Carex lanceolata,Oplismenus undulatifolius,Galium linearifolium,Cleistogenes hancei Keng were common species in the herb layer;(2)simpson dominance index and Shannon-Wiener diversity index of simple plot 3were higher than other plots,Margalef abundance index of simple plot 7and Pielou uniformity index of simple plot 5were bigger than other plots;(3)the total community diversities were significantly affected by environment factors.Simpson dominance index,Shannon-Wiener diversity index and Margalef abundance index were significantly affected by aspects of slope,and Pielou uniformity index was greatly affected by slope gradients.
出处
《水土保持研究》
CSCD
北大核心
2013年第4期125-130,共6页
Research of Soil and Water Conservation
基金
863计划"数字化森林资源监测技术研究"(2012AA102001-2)
中国博士后科学基金面上资助(2012M510611)
关键词
植物群落
物种多样性
灰色关联分析
plant community
species diversity
grey relation analysis