青钱柳杉木混交林种内及种间竞争的研究  

Study on Intraspecific and Interspecific Competition of Mixed Plantation of Cyclocarya paliurua (Batal.) Ilinsk and Chinese fir

作　　者：陈存及[1] 梁彦兰[1] 郭玉硕[2] 林文荣[2] 胡晓静[1] 刘宝[1] 

机构地区：[1]福建农林大学林学院,福建南平353001 [2]福建农林大学西芹教学林场,福建南平353001

出　　处：《福建林学院学报》2004年第1期1-4,共4页Journal of Fujian College of Forestry

基　　金：福建省科学技术厅科学基金资助项目(99 J 313)

摘　　要：采用Hegyi提出的单木竞争指数模型,用竞争强度来指证竞争的激烈程度,结果表明:混交林中对象木青钱柳的种内、种间以及与整个林分的竞争强度均随径级的增大而减少,各径级的种内竞争强度远大于种间竞争强度 种内、种间以及整个林分的竞争强度与对象木的胸径服从幂函数CI=AD-B关系,用此模型来预测各径级的种内、种间竞争强度,拟合效果良好,当对象木胸径DHB≥26cm时,竞争强度变化很小。Using Hegyi′s competition index model of single tree,the intraspecific and interspecific competition intensity is quantitatively analyzed.The result shows: the intraspecific ,interspecific,entire stands competition intensity of objective tree Cyclocarya paliurua (Batal.)Ilinsk decreases with increase in diameter class and the intraspecific competition intensity is more intensive than interspecific competition intensity; The relation between competion intensity and individul size of objective tree in diameter class closely follow equation CI=AD~\{-B\}.When diameter size of objective tree≥26 cm,change of competition intensity is feeble.The study provides quantitative index for cultivation of mixed plantation.

关 键 词：青钱柳 混交林 种内竞争 种间竞争 杉木 林分 群落 

分 类 号：S718.54[农业科学—林学]