| 巨桉人工林草本层优势种的种间关系及生态种组的划分 |
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| 引用本文： | 钟宇,张健,杨万勤,吴福忠,冯茂松,刘泉波.巨桉人工林草本层优势种的种间关系及生态种组的划分[J].草业学报,2010,19(3):56-62. |
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| 作者姓名： | 钟宇 张健 杨万勤 吴福忠 冯茂松 刘泉波 |
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| 作者单位： | 1.四川农业大学林学院,四川 雅安 625014;2.兴文县林业局,四川 兴文 644400 |
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| 基金项目： | 国家自然科学基金项目，国家科技支撑计划课题，四川省教育厅科研项目资助 |
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| 摘 要： | 根据野外60个样方的调查数据,运用χ2检验、Jaccard指数和Spearman秩相关系数研究了巨桉人工林草本层16个优势种的种间关联和相关关系。结果表明,草本层优势种种间联结性不强,种间关系较为松散,种的分布相对独立,呈负联结趋势,群落还处于演替之中,物种的组成还会发生变化。研究种间关系时,种间关联结合种间相关得出的结果较好。根据分析结果将16个优势种划分为3个生态种组,生态种组内的种其资源利用方式和生态要求相似,而组间表现出明显的差异。生态种组的划分能为巨桉人工林林下草本层的管理提供理论依据。
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| 关 键 词： | 巨桉人工林 草本层 种间关系 生态种组 |
| 收稿时间： | 1900-01-01; |
Interspecific relationships and ecological species groups of dominant herbage species in Eucalyptus grandis plantation |
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| ZHONG Yu,ZHANG Jian,YANG Wan-qin,WU Fu-zhong,FENG Mao-song,LIU Quan-bo.Interspecific relationships and ecological species groups of dominant herbage species in Eucalyptus grandis plantation[J].Acta Prataculturae Sinica,2010,19(3):56-62. |
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| Authors: | ZHONG Yu ZHANG Jian YANG Wan-qin WU Fu-zhong FENG Mao-song LIU Quan-bo |
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| Institution: | 1.Faculty of Forestry, Sichuan Agriculture University, Ya’an 625014, China; 2.Xingwen County Forestry Bureau, Xingwen 644400, China |
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| Abstract: | Based on the data of 60 plots obtained from investigation, the interspecific relationships among 16 dominant herbage species in Eucalyptus grandis plantation were studied by using χ2-test, Jaccard’s association index test and Spearman’s rank correlation coefficient test, respectively. The results indicated that most species were independently distributed and not closely related with each other. The major of species pairs correlated negatively, which showed the communities were in the phase of succession and the species composition would change. Indicators of interspecific association adding to correlation coefficient was an effective method to study the relationship between species. The 16 dominant species were classified into three ecological species groups. The Species in same ecological species groups had similar resource utilizing ways and ecological requirements, but those in different groups showed apparent differences. The classification of ecological species groups would provide a theoretical basis on managing herb layer in Eucalyptus grandis plantation. |
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| Keywords: | Eucalyptus grandis plantation herb layer interspecific relationship ecological species groups |
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