| 濒危植物荷叶铁线蕨的生态群落调查及生态位分析 |
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| 引用本文： | 潘丽芹,季华,傅强,查文涛,陈龙清. 濒危植物荷叶铁线蕨的生态群落调查及生态位分析[J]. 扬州大学学报(农业与生命科学版), 2005, 26(4): 74-78 |
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| 作者姓名： | 潘丽芹 季华 傅强 查文涛 陈龙清 |
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| 作者单位： | 华中农业大学,教育部园艺植物生物学重点实验室,湖北,武汉,430070;扬州大学,农学院,江苏,扬州,225009;华中农业大学,教育部园艺植物生物学重点实验室,湖北,武汉,430070 |
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| 基金项目： | 国家自然科学基金资助项目（30070539） |
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| 摘 要： | 通过对荷叶铁线蕨自然居群5个自然样地的调查，对10个优势种的种群生态位宽度与生态位重叠进行了计算。结果表明：荷叶铁线蕨有3种自然居群结构；其有性繁殖系数相对较高；生物量的垂直分布与植株高度成正比；生态位宽度相对较高。对其濒危原因的分析表明，生境条件的破坏可能是导致荷叶铁线蕨濒危的主要因素。
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| 关 键 词： | 荷叶铁线蕨 生态位宽度 生态位重叠 濒危机制 |
| 文章编号： | 1671-4652（2005）04-0074-05 |
| 收稿时间： | 2005-01-05 |
| 修稿时间： | 2005-01-05 |
Investigation of natural population and niche analysis for Adiantum reniforme var. Sinense |
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| PAN Li-qin,JI Hua,FU Qiang,ZHA Wen-tao,CHEN Long-qing. Investigation of natural population and niche analysis for Adiantum reniforme var. Sinense[J]. Journal of Yangzhou University(Agricultural and Life Science Edition), 2005, 26(4): 74-78 |
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| Authors: | PAN Li-qin JI Hua FU Qiang ZHA Wen-tao CHEN Long-qing |
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| Affiliation: | 1. Key Lab of Hort Plant Biol, MOE, Education, Huazhong Agric Univ, Wuhan, 430070, China; 2. Agric Coll, Yangzhou Univ, Yangzhou, 225009, China |
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| Abstract: | In this paper, the five natural sample zones of Adiantum reniforme var. sinense were investigated and 10 dominant species were used to calculate the niche width of populations and the niche overlap interpopulations. The morphologic characters of several mature individuals from each population at random were observed for analyzing the distribution of the vertical biology yield. The results showed that A. reniforme had three kinds of population structures and its sexual reproduction organs held comparatively high ratio. The vertical distribution of biology yield was increased with plant height. Niche width of A. reniforme wass comparatively high and the niche overlaps between 10 species were observed. Based on the above results, the deteriorating habitant condition was probably the main reason of its endangerment. |
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| Keywords: | Adiantum reniforme var. sinense niche width niche overlaps endangerment mechanism |
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