放牧对草地生产力及物种多样性的影响

The effect of grazing on grassland productivity and species diversity

放牧是草地利用的主要方式之一,本文从放牧强度、放牧时期和频率、放牧制度等角度对草地生产力和物种多样性的影响进行了论述,主要从草地农业生态系统中的草地-动物界面展开,放牧强度、放牧时期和放牧制度等是对草地影响的主要方面,对其进行综述,试图从草地生产力及物种多样性角度来判断放牧强度、放牧时期和放牧制度等,从而实现草地合理利用的目的。通过该综述,初步确定中度放牧强度、春季适当推迟放牧以及划区轮牧等,可使草地保持较高生产力及物种多样性。

Grazing is one of the major ways to use the grassland.This paper was forced on the effects on grassland productivity and species diversity by grazing intensity,grazing period and frequency,grazing system.The study area was belong to grassland-animal interface of the grassland agro-ecosystem.Grazing intensity,period and system are the major parts on the effects of grassland.The paper was summarized through the grassland productivity and species diversity to judge the optimized intensity,period and system.The purpose was to use the grassland reasonablely.Comprehensively,moderate grazing intensity,appropriate delaying spring grazing,roation grazing could keep the higher grassland productivity and species diversity.