摘要
采用通过X2统计量检验,共同出现百分率(AC)和和联结系数(PC)3个指标分别分析了多枝尖山区林下主要植物的种间联结特征。结果表明:13个灌木植物中满山红Rhododendron mariesii和山霉Rubus corchorifolius、粉花绣线菊Spiraea japonica之间、映山红Rhododendron simsii与箬竹Arundo donax以及满山红和映山红之间正联结极显著性(P<0.01),而菝葜Smilax china和满山红、菝葜和五味子Schizandrae fructus、绿叶胡枝子Lespedeza buergeri和三桠乌药Lindera obtusiloba,绿叶胡枝子和映山红、满山红和五味子之间呈正联结达到显著水平(P<0.05);17个草本植物中林荫千里光Senecio nemorensis和苔草Carex sp之间负联结极显著(P<0.01),冷水花Pilea cadiere与苔草以及芒草Miscanthus sp和求米草Oplismenus undulatifolius之间负联结达到显著水平(P<0.05),冷水花与堇菜Viola verecunda以及野青茅Deyeuxia arundinacea、求米草与委陵菜Potentilla chinensis3个种对间呈正联结极显著(P<0.01)。多枝尖山区林下灌木和草本植物的种间联结性较为松散,物种的生态习性、群落环境、群落演替进程和上层植物的影响等因素可能是形成该区种间联结特征的主要原因。
Three parameters including χ2 test,interspecific association coefficient（AC）,percentage co-occurrence（PC） were used to analysis the interspecific associations based on the 2×2 contingency table.The results indicated,among the 13 shrub species and 17 herb species,only 9 and 6 species pair showed significant or highly significant associations.Rhododendron mariesii,Rubus corchorifolius and Spiraea japonica,Rhododendron simsii and Arundo donax,R.mariesii,Smilax china and Schizandrae fructus,Lespedeza buergeri and Lindera obtusiloba,L.buergeri and R.mariesii and R.simsii showed highly significant positively associations.S.china and R.mariesii,R.mariesii and S.fructus,L.buergeri and L.buergeri,S.china and R.mariesii,R.mariesii,and S.fructus showed significantly negative associations.Among the 17 herb species,Senecio nemorensis and Carex sp.,Pileacadiere and Carex sp.,Miscanthus sp.and Oplismenus undulatifolius showed significant negative associations,P.cadierei and Viola verecunda,Deyeuxia arundinacea,O.undulatifolius and Potentilla chinensis showed highly significant positively associations.In Duozhijian Mountain,the fewer significant species associations attribute to theecological characters,community enviromrnt,succesion process and influence of canopy species.
出处
《生态环境学报》
CSCD
北大核心
2010年第9期2066-2071,共6页
Ecology and Environmental Sciences
基金
安徽省高校省级自然科学基金重点项目(KJ2010A233)
安庆师范学院博士科研启动经费(044-K05000000219)
关键词
种间联结
大别山
多枝尖
speceis association
Duozhjian
Dabieshan
