Soil microbial community diversity in low-coverage sand-fixing forest belts
The structure and diversity characteristics of soil microbial communities in low-coverage sand-fixing forest belts were analyzed and compared by applying high-throughput sequencing technology in a 25 m wide for-est belts sample plots of low-coverage(15％-25％)sand-fixing forest belt as a research object.The results showed that:(1)There were significant differences between soil physical and chemical properties,and the sand-fixing forest belt promoted the recovery of soil physical and chemical properties and soil microorganisms.The best recovery effect was at the position of 15 m in the forest belts,with the relatively high index of soil microbial diversity and high community richness.(2)The main dominant bacterial groups in the soil were Actinobacteria,Proteobacteria,Acidobacteria,Chloroflexi,of which Actinobacteria had the highest relative abundance;Asco-mycetes was the main dominant bacterial group in the fungal community,and Mortierellomycota was the sub-dominant bacterial group of the sand-fixing forest belt.(3)Available potassium,bulk density,organic matter were important factors affecting soil microbial community structure.
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