Effect of grazing on the bacterial characteristics of mountainous meadow soil
The effects of Different Grazing Intensities on the composition and structural characteristics of soil bacterial communities in mountain meadow were studied.Taking the summer pasture in Ashli village,Ashli Township,Changji City,in the mid alpine zone of the northern slope of Tianshan Mountains in Xinjiang as the object,two grazing intensities,heavy grazing and light grazing,and no grazing are-a(as a control),were set up to analyze the physical and chemical properties of soil and the structure and composition of soil bacterial com-munities under different grazing intensities.Light grazing significantly increased the contents of total phosphorus and available potassium in soil(P<0.05);There was no significant difference in soil bacterial community richness and diversity under Different Grazing Intensities;The relative abundances of Actinobacteriota and Thermoleophilia decreased significantly under heavy grazing,while Firmicutes and Bacilli increased significantly(P<0.05);According to rad analysis,the main factors affecting the soil bacterial community structure are total phosphorus,total potassium,available potassium and organic matter.
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