| 桂林岩溶石山阴香群落主要种群生态位研究 |
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| 引用本文： | 张忠华,梁士楚,胡刚. 桂林岩溶石山阴香群落主要种群生态位研究[J]. 林业科学研究, 2009, 22(1) |
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| 作者姓名： | 张忠华 梁士楚 胡刚 |
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| 作者单位： | 广西师范大学生命科学学院,广西桂林,541004;华东师范大学环境科学系,上海,200062;广西师范大学生命科学学院,广西桂林,541004;广西环境工程与保护评价重点实验室,广西桂林,541004;广西师范大学生命科学学院,广西桂林,541004 |
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| 基金项目： | 国家重点基础研究发展计划，广西新世纪十百千人才工程专项资金资助项目，广西环境工程与保护评价重点实验室研究基金 |
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| 摘 要： | 采用Levins公式和Pianka公式测定了桂林岩溶石山阴香群落乔木层12个主要种群和灌木层13个主要种群的生态位宽度和生态位重叠,并对主要种群的生态位宽度和生态位重叠关系以及环境适应能力进行了探讨.结果表明:乔木层中,阴香、石山桂花、菜豆树等具有较大的生态位宽度,分别为10.051、6.935和5.695,而樟树、马尾松等的生态位宽度较小;生态位重叠值大于0.5的种对有23对,占总种对数的34.8%;生态位重叠值小于0.5的种对有40对,占60.6%;不发生重叠的种对有3对,占4.5%.灌木层中,阴香、石山桂花、粗糠柴等幼树的生态位宽度较大,分别为10.493、7.099和4.949,而山合欢、三叶五加等的生态位宽度较小;生态位重叠值大于0.5的种对有17对,占总种对数的21.8%;生态位重叠值小于0.5的种对有47对,占60.3%;不发生重叠的种对有14对,占17.9%.具有较大生态位宽度的树种是阴香群落的主要优势种或伴生种,对岩溶石山环境具有广泛的适应性.具有相同或相似环境要求的物种间生态位重叠较大,生态位宽度较大的物种与其他种类间的生态位重叠也较大.
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| 关 键 词： | 岩溶石山 阴香群落 优势种群 生态位宽度 生态位重叠 |
Niche Characteristics of Dominant Populations in Cinnamomum burmannii Community on Karst Hills of Guilin |
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| ZHANG Zhong-hu,HANG Shi-chu,HU Gang. Niche Characteristics of Dominant Populations in Cinnamomum burmannii Community on Karst Hills of Guilin[J]. Forest Research, 2009, 22(1) |
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| Authors: | ZHANG Zhong-hu HANG Shi-chu HU Gang |
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| Affiliation: | 1.College of Life Science;Guangxi Normal University;Guilin 541004;Guangxi;China;2.Department of Environmental Science;East China Normal University;Shanghai 200062;3.Guangxi Key Laboratory of Environmental Engineering and Protection Evaluating;China |
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| Abstract: | The niche breadth and overlap of 12 dominant populations in tree layer and 13 dominant populations in shrub layer of Cinnamomum burmannii community on karst hills of Guilin were measured by using the formula described by Levins and Pianka,and the relationship between niche breadth and overlap and the ability of those populations to adapt to karst environment were also analyzed.The results showed that in the tree layer,C.burmannii,Osmanthus fordii and Phaseolus vulgaris had broader niche breadths and their n... |
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| Keywords: | karst hills Cinnamomum burmannii community dominant population niche breadth niche overlap |
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