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当前位置: 首页 > 文章 > 中国红豆杉种内和种间竞争关系的研究 西北林学院学报 2009,24 (3) 12-16
Position: Home > Articles > Intraspecific and Interspecific Competition of Taxus chinensis of Liuba in Shaanxi Province Journal of Northwest Forestry University 2009,24 (3) 12-16

中国红豆杉种内和种间竞争关系的研究

作  者：
宋保伟;张宗勤;宋西德;刘磊
单  位：
大兴安岭职业学院;西北农林科技大学
关键词：
中国红豆杉;种内竞争;种间竞争;竞争指数
摘  要：
通过对陕西留坝县庙台子(张良庙—紫柏山风景名胜区)的27株中国红豆杉对象木及290株竞争木的调查,采用Hegyi单木竞争指数分析了中国红豆杉的种内和种间竞争强度。结果表明:中国红豆杉种内竞争强度较小,占总竞争强度的15.38%,其种群的竞争压力主要来自种间竞争,占总竞争强度的84.62%。对中国红豆杉竞争较强的主要树种是栓皮栎、青冈和金银忍冬等当地的优势种。随着中国红豆杉胸径的增大,所受到的竞争压力逐渐减弱,胸径在10 cm所受到林分的竞争最为激烈,竞争指数与中国红豆杉胸径呈幂函数关系。
译  名：
Intraspecific and Interspecific Competition of Taxus chinensis of Liuba in Shaanxi Province
作  者：
SONG Bao-wei1,2,ZHANG Zong-qin1,SONG Xi-de1,LIU Lei2 (1.Northwest A&F University,Yangling,Shaanxi 712100,China;2.Daxinganling Vocational College,Jiagedaqi,Heilongjiang 165000,China)
关键词：
Taxus chinensis;intraspecific competition;interspecific competition;competition index
摘  要：
Taking 27 Taxus chinensis and 290 competitive trees as objective,intraspecific and interspecific competition were investigated in Miaotaizi Nature Reserve,Liuba County,Shaanxi Province.Intraspecific and interspecific competition intensities were calculated by Hegyi individual competitive indices(CI).The results showed that the intraspecific competition among T.chinensis population was weak,accounting for 15.38% of total competitive intensity.The main stress to the T.chinensis population came from interspecific competition,which accounted for 84.62% of the total.The main competitors were local dominant species,including Quercus variabilis,Cyclobalanopsis glauca and Lonicera maackii.The competition intensity of T.chinensis released with the increase of DBH,and the stress was more intense for trees less than 10cm in DBH.The relationship between competition intensity and DBH of target trees followed power function.

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