不同放牧制度对草地植被的影响

The Effects of Different Grazing Systems on the Grassland Vegetation

通过对比研究放牧制度及围栏封育对退化草地植被的影响,来探讨划区轮牧在退化草地植被恢复中的作用以及最优的放牧方式.结果表明,在相同的载畜率条件下,划区轮牧制度通过对放牧利用时间与空间的合理配置,使牧草在频度、盖度、重要值、生物量等方面比连续放牧都有所提高,与围栏禁牧有同样的恢复效果,并且得出相对最优的放牧方式.因此,将划区轮牧用于荒漠草原植被恢复在实践中是可行的,是实现草地资源持续利用的有效途径之一,建议在今后的退化草地恢复中要从优化放牧方式上寻找新的发展出路.

Through comparing effects between grazing systems and a feedlot system on the degenerated vegetation, the roles of rotational grazing system playing in vegetation recovery were investigated. The result shows that the frequency, the cover degree, the importance value and biomass of the grass with the rotational gazing are higher than those with the continuous grazing, the effect of the vegetation recovery by the rotational gazing is the same as that of the grass preserve. A relative optimized rotation grazing system under the degeneration vegetation is put forward. Suggestions for further study are discussed.