不同放牧强度下塔尔巴哈台山山地草甸植被特征分析

Analysis on Pasture Vegetation Characteristics Under Different Grazing Intensity in Mountain Meadow of Tarbagatai Mountains

2014年5—7月对塔尔巴哈台山不同放牧强度下的山地草甸样地进行动态监测分析,利用草地的野外实际测定数据,计算了群落盖度、高度、地上生物量以及物种优势度等数量指标,对山地草甸样地3种放牧强度的群落结构和功能指标进行了研究。结果表明:在5—7月,山地草甸草地群落的高度、盖度、地上生物量都随着放牧强度的增大而逐渐降低;可食牧草综合优势度随放牧强度加大而下降,而退化标志物种冷蒿以及一年生植物等呈上升趋势。

Using the grass of the field actual measurement data,dynamic monitoring analysis under different grazing intensity on mountain meadow sample of Tarbagatai Mountains during May to July,2014 was carried out,to calculate the community coverage,height,above ground biomass and species dominance quantitative index, and the community structure and function of index such as three grazing intensity of mountain meadow plot were studied.The results showed that during May to July,community height,coverage and aboveground biomass of mountain meadow grassland gradually reduced with the increase of grazing intensity.Edible grass comprehensive advantages decreased with the increase of grazing intensity, and the degradation of A rtemisiafrigida logo species and annual plants is on the rise.