陕北桥山林区主要木本植物群落种间联结性  

Interspecific Association of Dominant Woody Plant Communities in Qiaoshan Forest Region,Shaanxi

作　　者：许金石 陈煜[1] 王国勋[1] 柴永福[1] 王茂[1] 刘晓[1] 岳明[1] 

机构地区：[1]西北大学西部资源生物与现代生物技术教育部重点实验室,西安710069

出　　处：《西北植物学报》2014年第7期1467-1475,共9页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家基本药物所需中药原料资源调查和监测项目(财社[2011]76号);中国代表性区域特色中药资源保护利用(201207002);陕西省中医药管理局专项(13-ZY052)

摘　　要：该研究基于2×2联列表,分别应用种间联结系数(AC)、Ochai指数(OI)、Jaccard指数(JI)和χ2统计量对陕北南部黄土高原桥山林区16种乔木物种和32种灌木物种间的种间联结性的正负和显著程度进行计算和综合分析,并以半矩阵图表达分析结果。结果显示:(1)乔木中油松与青麸杨、辽东栎与漆树间表现出显著的正联结,而刺槐与其他乔木物种间则多表现为负联结。(2)灌木物种中,槲树和鼠李、水栒子和陕西荚蒾,虎榛子和黄蔷薇、鼠李和卫矛、兴安胡枝子和陕西荚蒾、兴安胡枝子和中华绣线菊有着显著的正联结,且茶条槭与大部分灌木物种有着较为显著的正联结关系。但酸枣、狼牙刺和延安小檗与大多数灌木物种表现出负联结关系。其他物种对之间的联结关系则不甚显著,表明了本区物种之间的联结性大都较为松散。(3)基于种间联结性,划定了本区木本植物的生态种组,其中16种乔木物种被划分为4个组,32种灌木物种被划分为5个组。研究种间联结,还可以为黄土高原区植被的保护和管理提供参考。In this paper,based on the 2 × 2 table,a series of methods including association coefficient （AC）,Ochai index（OI）,Jaccard index（JI） and x2 test were used to calculate and analyze synthetically the positive or negative interspecific associations and significances of 16 tree species and 32 shrub species in Qiaoshan Forest Region.Also,the analysis results were expressed by semi matrix.The results indicated that：（1） There were significantly positive interspecific associations between Pinus tabulaeformis and Rhus potaninii,Quercus wutaishanica and Toxicodendron delavayi in the tree species.However,Robinia pseudoacacia was significantly negatively associated with other tree species.（2）Among the shrub species,Quercus dentata to Rhamnus davurica,Cotoneaster multi florus to Viburnum schensianum,Ostryopsis davidiana to Rosa hugonis,Rhamnus davurica to Euonymus alatus,Lespedeza davurica to Viburnum schensianum,Lespedeza davurica to Spiraea chinensis showed a significant positive association,and Acer ginnala aggregated with most of the shrub species,while Ziziphus jujuba var.spinosa,Sophora davidii and Berberis purdomii showed negative associations with most shrub species.It is suggested that the relationships among the other woody species were weak since no significant associations were detected.（3）Based on the present results of interspecific association,4 ecological species groups of 16 tree plants were delineated.Meanwhile,5 ecological species groups of 32 shrub plants were also delineated in this area.Study of Interspecific associ ation can also provide a reference for the protection and management of vegetation in the Loess Plateau.

关 键 词：黄土高原 种间联结 生态位 生态种组 桥山林区 植被保护 

分 类 号：Q948.122.1[生物学—植物学]