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当前位置: 首页 > 文章 > 金佛山巴山榧树灌丛群落主要木本植物种群生态位特征 生态学杂志 2014,33 (5) 1135-1141
Position: Home > Articles > Niche characteristics of dominant woody plant populations in a Torreya fargesii shrub community in the Jinfo Mountains Chinese Journal of Ecology 2014,33 (5) 1135-1141

金佛山巴山榧树灌丛群落主要木本植物种群生态位特征

作  者：
汪建华;周先容;尚进;江波;杨利平
单  位：
长江师范学院生命科学与技术学院
关键词：
巴山榧树;灌丛群落;生态位宽度;生态位重叠;金佛山
摘  要：
应用Levins、Hurlbert生态位宽度及Pianka生态位重叠计测公式,对金佛山巴山榧树(Torreya fargesii)灌丛群落中主要木本植物种群的生态位特征进行了研究。结果表明:巴山榧树种群的重要值高于其他种群,且具有较高的生态位宽度;小蜡(Ligustrum sinense)、插田泡(Rubus coreanus)、巴山榧树、平枝栒子(Cotoneaster horizontalis)、金丝桃(Hypericum monogynum)、掌叶梁王茶(Nothopanax delavayi)、异叶花椒(Zanthoxylum ovalifolium)和金山荚蒾(Viburnum chinshanense)等种群具有较大的生态位宽度;物种的生态位宽度与重要值之间呈弱正相关,而与重要值变异系数之间呈显著负相关;在253个种对中,有160对的生态位重叠值>0.6,占总对数的63.24%,大多数种群间的生态位重叠程度较高,平枝栒子、小蜡、金丝桃、插田泡、异叶花椒和金山荚蒾等生态位宽度较高的种群与巴山榧树的生态位重叠值较大,表明各种群间存在着较强的资源竞争。
译  名：
Niche characteristics of dominant woody plant populations in a Torreya fargesii shrub community in the Jinfo Mountains
作  者：
WANG Jian-hua;ZHOU Xian-rong;SHANG Jin;JIANG Bo;YANG Li-ping;College of Life Science and Technology,Yangtze Normal University;
关键词：
Torreya fargesii;;shrub community;;niche breadth;;niche overlap;;Jinfo Mountains
摘  要：
We investigated the niche characteristics of the dominant woody plant populations in a Torreya fargesii shrub community in the Jinfo Mountains based on the formulae by Levins and Hurlbert for niche breadth and Pianka's niche overlap. Our results showed that the T. fargesii importance value( IV) was the largest in the community. The niche breadths for Ligustrum sinense,Rubus coreanus,T. fargesii,Cotoneaster horizontalis,Hypericum monogynum,Nothopanax delavayi,Zanthoxylum ovalifolium and Viburnum chinshanense were relatively greater than those for the other populations. There was a weak positive correlation between the niche breadth and the IV,and a negative correlation between the species' niche breadth and the variance coefficient of the IV. Of the 253 species pairs,160 pairs overlapped > 0. 6,occupying 63. 24% of the total species pairs. There were relatively high niche overlaps among most of the populations,and C. horizontalis,L. sinense,H. monogynum,R. coreanus,Z. ovalifolium,V. chinshanense populations with broad niche breadth had greater overlaps with the T. fargesii population. These results indicated that intense resource competition occurs among populations.

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