| 宁夏盐池县退化草地恢复过程中不同利用方式下植物群落多样性的对比研究 |
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| 引用本文： | 徐坤,李国旗,李世忠.宁夏盐池县退化草地恢复过程中不同利用方式下植物群落多样性的对比研究[J].西北农业学报,2007,16(4):106-111. |
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| 作者姓名： | 徐坤 李国旗 李世忠 |
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| 作者单位： | 宁夏大学,西北退化生态系统恢复与重建省部共建教育部重点实验室,宁夏大学西部生态与生物资源开发联合研究中心,宁夏银川,750021 |
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| 基金项目： | 宁夏大学校科研和教改项目;教育部跨世纪优秀人才培养计划;国家自然科学基金 |
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| 摘 要： | 主要以草地群落的样方调查数据为基础，针对3种不同利用方式下的退化草地群落进行群落结构及多样性的分析，并进行了对比研究。结果表明：尽管禁牧对增加草地植物优势种的重要值起到了一定作用，增加了草地植物群落的密度、盖度等，减少了有毒牧草，但要发展草地畜牧业就不可能一直完全禁牧下去，对比以草定畜与六区轮牧的放牧方式，虽然随着月份变化，以草定畜样地的多样性程度上升，但这种大幅变动有可能是草地群落恢复性较差的表现，而六区轮牧的多样性3种指数的月份变化是有规律性的，相对于以草定畜的草地群落恢复性应该是较好的，可知以六区轮牧对草地植物群落的恢复较为有利。
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| 关 键 词： | 多样性 六区轮牧 恢复 |
| 文章编号： | 1004-1389（2007）04-0106-06 |
| 收稿时间： | 2007-03-05 |
| 修稿时间： | 2007-03-052007-03-15 |
A Comparison Study on Diversity of Plant Community of Different Utilization During Recovering of Degenerative Steppe in Yanchi County, Ningxia |
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| XU Kun,LI Guo-qi and LI Shi-zhong.A Comparison Study on Diversity of Plant Community of Different Utilization During Recovering of Degenerative Steppe in Yanchi County, Ningxia[J].Acta Agriculturae Boreali-occidentalis Sinica,2007,16(4):106-111. |
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| Authors: | XU Kun LI Guo-qi and LI Shi-zhong |
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| Institution: | Key Laboratory of Degraded Ecosystem Restoration and Rehabilitation in Northwest China,Ministry of Education Western China Ecology Research Center,Ningxia University,Yinchuan Ningxia 750021, China |
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| Abstract: | The paper chiefly had a comparison study on diversity of plant community of different utilization during recovering of degenerative steppe,the bases of data were from the investigation of fixed sample plot and quadrat of community.It showed that:The prohibition of grazing had an effect on increasing the importance value of dominant species of steppe plant community,and increasing the density,the cover and so on,reducing the poisonous forage,but the prohibition of grazing couldn't last for a long time to develop grassland agriculture.Contrasting limited steppe grazing and six blocks rotational grazing ways,with month changed,the diversity of the sample plot of limited steppe grazing increased,but the greater change might mean that the resilience was worse.The month changes of three diversity indexes in six blocks rotational grazing were of the regularity,the resilience of steppe plant community was better,six blocks rotational grazing was helpful to the resuming of steppe plant community. |
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| Keywords: | Diversity Six blocks rotational grazing Resuming |
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