Quantitative characteristics of soil microbial community composition in Yancheng coastal wetland
Soil microorganisms are a significant part of the ecosystem and play an important role in maintaining the stability of the wetland soil ecosystem.We compared the quantitative characteristics and relative abundance distribution of soil mi-crobial community composition in muddy mudflat,Spartina alterniflora,Scirpustriqueter,Suaeda salsa and Phragmites aust-ralis community in Yancheng coastal wetland,using operational taxonomic unit(OTU)data of 16S rRNA high-throughput sequencing.The results showed that:(1)Differences existed in the quantitative characteristics of the relative abundance of soil microbial community OTU sequences between the mud flat and the four plant community habitats,which was manifested in the fact that the seasonal variation of the mud flat was greater than that of the plant community habitat.There were also some differences between the habitats of plant communities.That of Spartina alterniflora community maintained the same seasonal variation trend at different soil levels,which was quite different from that of the habitat of native plant communi-ties.(2)The relative abundance distribution characteristics of soil microbial community OTU were not consistent with sea-sonal temperature changes.The relative abundance peak value in May was the lowest,while the relative abundance differ-ence between August with the highest monthly average temperature and March,November with lower temperature was small.In general,there was a little difference in the quantitative characteristics of the relative abundance of OTU sequences in the soil microbial community under environmental change,and the relative composition was relatively stable.
NETL
NSTL
万方数据
