摘要
本文应用ＤＣＡ二维散点非等级制分类和ＴＷＩＮＳＰＡＮ等级制分类的方法进行了四川西北部和甘肃南部云冷杉林的数量分类，共划分出１５个群丛，分属于云杉、冷杉、高山栎和桦木四个群系，并分别讨论了各群丛的特征。用ＤＣＡ二维散点的非等级制分类与ＴＷＩＮＳＰＡＮ的等级制分类的方法对于云冷杉植物群落都产生了较好且一致的分类效果。通过ＴＷＩＮＳＰＡＮ分类的研究，发现了对生境有指示意义的特征种和指示种，主要的植物种类有：圆叶菝契、网状小檗等（冷湿，指示藓类冷杉林和杜鹃冷杉林）；小花拂子茅、箭炉樱等（冷旱，指示草类云杉林和箭竹云冷杉林）；械树、铁杉、沛阳花等（暖湿，指示落阔冷杉林和灌木云杉林等）；罗氏异燕麦、华西矮卫茅、糙野青茅和狭叶柳兰等（暖旱，指示灌木云杉林和云冷杉疏林）。
Based on a two-dimensional non-rank classification of two way indicativespecies analysis(TWINSPAN),spruce and fir forest communities in Northwest Sichuan and South Gansu are divided into 15 associations belonging to4 formations by using the DCA and TWINSPAN classification methods. The dominant and indicator plant species are Smilax cyclophylla, Berber-is dictyophylla(cold and moist,indicative of Moos-Abies forest and Rhodod-endron-Abies forest);Calamagrostis epigejos,Prunus lobulata(cold and dry,indicative of Calamagrostis Picea forest and Sinarundinar-picea and Abics for-est);Acer spp.,Tsuga chinesis and Viburnum lobophyllum(warm and moist,indicative of Broad-leafed deciduous-Abies forest and Shrubland-Spruce forest);Helitotrichon boylei, Euvnymus przcewlskii,Deyeuxia scacrescens and Chae-manerio,angustifolium(warm and dry,indicative of Shrubland-Spruce forestand Spruce-Abies forest).
出处
《植物生态学报》
CAS
CSCD
北大核心
1994年第4期297-305,共9页
Chinese Journal of Plant Ecology
关键词
云冷杉林
植物群落
分类学
数量分类
Spruce and fir forest
Plant community
DCA classification
TWINSPAN classification
Characteristic species
Indicator species
