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放牧及刈割强度对鸭茅密度及能量积累的影响 被引量:7

Effect of grazing and mowing intensity on density and energy accumulation of Dactylis glomerata
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摘要 The population density,caloric value and energy accumulation of Dactylis.glomeratawere significantly increased after moderate grazing.Tuft size was decreased,while the tuft density was significantly increased due to the high grazing intensity which showed the different reproductive strategies on the sites with various grazing intensities.Both inadequate grazing and over-grazing lowered the density and energy accumulation of D.glomerata.65% rate of consumption of the grasses,or 4 times of mowing in 1 year contributed to the rapid growth of D.glomerata and the sustainable development of the grassland. The population density,caloric value and energy accumulation of Dactylis.glomeratawere significantly increased after moderate grazing.Tuft size was decreased,while the tuft density was significantly increased due to the high grazing intensity which showed the different reproductive strategies on the sites with various grazing intensities.Both inadequate grazing and over-grazing lowered the density and energy accumulation of D.glomerata.65% rate of consumption of the grasses,or 4 times of mowing in 1 year contributed to the rapid growth of D.glomerata and the sustainable development of the grassland.
出处 《应用生态学报》 CAS CSCD 2001年第6期955-957,共3页 Chinese Journal of Applied Ecology
基金 国家"九五"科技攻关资助项目 (96 0 1 6 0 2 0 2 )
关键词 人工草地 鸭茅 种群密度 能量积累 放牧强度 刈割强度 Grazing, Mowing, Density, Energy accumulation, Dactylis.glomerata
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参考文献2

  • 1杨允非,应用生态学报,1996年,7卷,2期,159页
  • 2弓耀明,放牧管理:科学研究在实践中的应用,1990年,4页

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