| 右玉盐碱化草地植物生态位特征研究 |
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| 引用本文： | 夏方山,董秋丽,谢开云,董宽虎.右玉盐碱化草地植物生态位特征研究[J].四川草原,2011(1):13-16,24. |
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| 作者姓名： | 夏方山 董秋丽 谢开云 董宽虎 |
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| 作者单位： | 山西农业大学动物科技学院; |
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| 基金项目： | 国家“十一五”科技支撑计划项目(2007BAD56B01)资助 |
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| 摘 要： | 研究盐碱化草地植物群落特征和演替方向,对其生态系统的恢复或重建以及提高其生产力具有极其重要的作用。试验采用样方法对右玉盐碱化草地的植物种群进行了系统的调查研究,计算其20种主要植物的重要值、生态位宽度及生态位重叠值。结果表明:该盐碱化草地的优势种为赖草,其重要值为0.39,亚优势种为碱茅,重要值为0.35;而生态位宽度值最大的是碱毛茛,为0.9075,其与其他物种的生态位重叠值也较其他物种大,该盐碱化草地生物种群不稳定,演替方向将是杂类草代替禾草的优势地位,该草地的利用价值会下降,如不及时采取有效措施,盐碱化及退化速度将继续增大。
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| 关 键 词： | 盐碱化草地 生态位 重要值 生态位宽度 生态位重叠 |
Study on Characteristics of Plant Niche in Youyu Grassland of Salinization |
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| XIA Fang-shan,DONG Qiu-li,XIE Kai-yun,DONG Kuan-hu.Study on Characteristics of Plant Niche in Youyu Grassland of Salinization[J].Journal of Sichuan Grassland,2011(1):13-16,24. |
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| Authors: | XIA Fang-shan DONG Qiu-li XIE Kai-yun DONG Kuan-hu |
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| Institution: | XIA Fang-shan,DONG Qiu-li,XIE Kai-yun,DONG Kuan-hu*(College of Animal Science and Technology,Shanxi Agricultural University,Taigu 030801,China) |
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| Abstract: | Study on plant community condition and its succession of Youyu grassland of salinization is necessary for the environment ecological restoration and grassland productivity improvement.Plant populations of 20 sampling plots were investigated through quadrat sampling method by monitoring the characteristics of important value,niche breadth,and niche overlap of 20 main species.The results showed that the dominant species was Leymus secalinus in Youyu grassland of salinization,its important value was o.39,and t... |
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| Keywords: | Grassland of salinization Niche Important value Niche breadth Niche overla |
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