短花针茅草原群落特征对全年放牧和春季休牧的响应 |
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引用本文: | 王敏,卫智军,孙世贤,刘文亭. 短花针茅草原群落特征对全年放牧和春季休牧的响应[J]. 内蒙古草业, 2014, 0(3): 51-56 |
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作者姓名: | 王敏 卫智军 孙世贤 刘文亭 |
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作者单位: | 内蒙古农业大学生态环境学院,内蒙古呼和浩特010019 |
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基金项目: | 农业部公益性行业(农业)科研专项经费项目(201003019) |
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摘 要: | 本文以内蒙古高原短花针茅草原为研究对象,研究全年放牧和春季休牧下草地植被在盖度、重要值,植物功能群生物量、多样性等的响应。结果表明,春季体牧下草地主要植物种盖度较高,其中春季零放牧+夏季适度放牧+秋季适度放牧效果最好。春季休牧+夏季适牧+秋季适牧处理下短花针茅的重要值较低,但是无芒隐子草重要值高于春季体牧+夏季重牧+秋季重牧处理,碱韭重要值低于春季休牧+夏季重牧+秋季重牧处理,银灰旋花则相反。春季休牧处理下植被群落的地上生物量和Shannon多样性指数显著高于其他放牧处理(P〈0.05),其中春季休牧+夏季适牧+秋季适牧处理最为明显。
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关 键 词: | 短花针茅草原 春季休牧 群落 |
The Community Characteristics of Stipa Breviflora Grisb. Desert Response to Annual Grazing and Spring Break PastoralF |
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Affiliation: | WANG Min, WEI Zhi--jun, SUN Shi--xian, LIU Wen--ting (College of Ecology and Environmental Science, Agricultural University of Inner Mongolia, Huhhot, Inner Mongolia Autonomous Region 010019) |
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Abstract: | The article, taking Stipa breviflora Grisb. desert of Inner Mongolia as the research object, studies the effect of annual grazing and spring break--pastoral on grassland vegetation about coverage, the important val- ue, the biomass of plant functional group, the diversity and so on. The result shows that the main plants in the grassland have higher coverage under the condition of spring break--pastoral. Break--pastoral in spring+ moder- ate grazing in summer+ moderate grazing in autumn has the best effects. Under the deal with break--pastoral in spring+ moderate grazing in summer+ moderate grazing in autumn, the important value of Stipa breviflora Grisb. is lower. But the important value of Cleistogenes songorica Roshev. and Convolvulus ammannii is higher than break--pastoral in spring+heavy grazing in summer+ heavy grazing in autumn, and the important value of AlliumpolyrhizumTurcz. is lower at the same time. Under the deal with spring break--pastoral, the aboveground biomass of plant community and Shannon diversity index is significantly higher than other grazing treatment(P〈 0.05), break--pastoral in spring+ moderate grazing in summer+ moderate grazing in autumn is the most obvi- ous. |
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Keywords: | Stipa breviflora Grisb. desert Spring break-- pastoral Community |
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