宝天曼锐齿槲栎-华山松林样地物种组成及空间分布格局  

The species composition and spatial patterns of Quercus aliena var.acutiserrata-Pinus armandii forest in Baotianman natural reserve

作　　者：袁志良[1] 庄静静[1] 朱学灵[2] 叶丛云 叶永忠[1] 

机构地区：[1]河南农业大学生命科学学院,河南郑州450002 [2]国家林业局宝天曼森林生态定位研究站,河南内乡474350 [3]河南省粮油饲料产品质量监督检验站,河南郑州450003

出　　处：《河南农业大学学报》2011年第4期411-418,423,共9页Journal of Henan Agricultural University

基　　金：国家科技支撑计划(2008BAC39B02)

摘　　要：为了深入理解宝天曼自然保护区树种多样性的形成和维持机制,对核心区内1 hm2锐齿槲栎-华山松固定监测样地的物种组成及空间分布格局进行了研究.结果表明,样地内共有胸径≥1 cm的木本植物58种2 214株,隶属于28科49属,其中,锐齿槲栎(Quercus alienavar.acutiserrata)和华山松(Pinus armandii)是样地中的2大优势种;区系组成以温带成分为主,同时含有较多的热带区系成分,反映了本区南北过渡的特色;锐齿槲栎、华山松种群均更新不良,种内和种间竞争是其原因之一;样地物种空间分布格局整体上表现为随机分布为主,但2大优势种则主要表现为聚集分布,且明显受环境异质性的影响.To understand the formation and maintenance mechanism of species diversity in Baotianman natural reserve,this paper studied the species composition and spatial patterns of the 1 hm2 Quercus aliena var.acutiserrata-Pinus armandii permanent forest plot.The results showed that,there were 2 214 standing woody plants with DBH≥1 cm,belonging to 58 species,49 genera and 28 families,among which,Quercus aliena var.acutiserrata and Pinus armandii were the two dominant species in the permanent plot.The study of flora revealed the transition characteristics from north to south with temperate elements and more tropical ones.Intraspecific and interspecific competition were one of the reasons for the bad regeneration of Quercus aliena var.acutiserrata and Pinus armandii populations.

关 键 词：华山松林 物种组成 植物区系 径级 空间分布格局 

分 类 号：S718.5[农业科学—林学] Q948[生物学—植物学]