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,春季休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休牧+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。
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.
出处
《草原与草业》
2014年第3期51-56,共6页
Grassland and Prataculture
基金
农业部公益性行业(农业)科研专项经费项目(201003019)
关键词
短花针茅草原
春季休牧
群落
Stipa breviflora Grisb. desert
Spring break-- pastoral
Community
