| 多年割草对羊草草原群落生物量及羊草和■草种群重要值的影响 |
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| 引用本文： | 鲍雅静,李政海,包青海,仲延凯,王静.多年割草对羊草草原群落生物量及羊草和■草种群重要值的影响[J].内蒙古大学学报(自然科学版),2001,32(3). |
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| 作者姓名： | 鲍雅静 李政海 包青海 仲延凯 王静 |
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| 作者单位： | 内蒙古大学生态与环境科学系, |
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| 基金项目： | 内蒙古大学青年科学基金 |
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| 摘 要： | 羊草草原经过 1 7年的割草 ,群落的地上和地下生物量及主要种群的重要值均受到了不同程度的影响 ,而羊草和 艹洽 草种群的变化尤其明显 .在不同频率割草的实验系列中 ,群落生物量和羊草种群的重要值随割草频率的增加而降低 .在不同时期割草的实验系列中 ,群落地下生物量随着割草时期的后移呈上升趋势 ,地上生物量和羊草种群重要值则是 8月份刈割受到影响较大 .艹洽 草种群重要值的变化趋势与羊草基本相反 .
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| 关 键 词： | 刈割 群落生物量 羊草 ■草 重要值 |
Influence of Mowing for Many Years on Community Biomass and the Important Value of Leymus chinensis and Koeloria cristata Population on L.chinensis Steppe |
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| BAO Ya-jing,LI Zheng-hai,Bao Qing-hai,Zhong Yan-kai,WANG Jing.Influence of Mowing for Many Years on Community Biomass and the Important Value of Leymus chinensis and Koeloria cristata Population on L.chinensis Steppe[J].Acta Scientiarum Naturalium Universitatis Neimongol,2001,32(3). |
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| Authors: | BAO Ya-jing LI Zheng-hai Bao Qing-hai Zhong Yan-kai WANG Jing |
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| Abstract: | Under mowing for 17 years on the L.chinensis steppe,the community aboveground and underground biomass and the important value of major population were effected in different degree, especially L.chinensis and K.cristata population. Under the influence of mowing with different frequency, the community biomass and the important value of L.chinensis gradually declined with the increase of mowing frequency. Under the influence of mowing at different time, the community underground biomass rose with behind moving of mowing time.The aboveground biomass and the important value of L.chinensis come under bigger influence of mowing in August every year.The change tendency of K.cristata population was just right opposite to the L.chinensis. |
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| Keywords: | mowing community biomass L chinensis K cristata The important value |
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