通过试验研究不同放牧制度对新源县草原生态环境的影响,探索山地草甸合理的放牧制度。采用划区轮牧和自由放牧方式,研究不同放牧制度对草原生态环境的影响。试验表明:自由放牧对比划区轮牧条件下草原植被的可食草产量低,且差异显著(P<0.05),而在草群密度、盖度和毒害草产量上差异不显著(P>0.05),在放牧后期8月份和9月份两者的可食草产量才表现出显著性差异(P<0.05)。通过试验得出两种放牧制度对草原植被各功能群的影响不显著,但划区轮牧较自由放牧保留的植被好,说明划区轮牧能够保持草原群落整体的生态均匀度,有利于草原的合理利用。

Through the experimental study of grazing systems on grassland ecological environment in Xinyuan County,to explore mountain meadow reasonable grazing system.Based on the way of rotational grazing and free grazing,to study the impact of different grazing systems on grassland ecological environment.There is a significant difference(P <0.05) on edible grass yield of grassland vegetation compare the free grazing with rotational grazing,and there is no significant difference(P > 0.05) in grass population densities,coverage and poison grass yield.Only in later grazing period or between August to September,both the edible grass production has significant difference(P <0.05).The experiment showed that two grazing systems is no significant effect on functional groups of grassland vegetation,but the vegetation status after rotational grazing is better than free grazing,it means that rotational grazing can maintain the whole grassland community evenness and benefits the rational use of the grasslands.