ANALYSIS OF ARCHAEAL DIVERSITY AND ITS INFLUENCING FACTORS IN THE SOIL OF NY-ÅLESUND MELTWATER AREAS IN ARCTIC NORWAY

Ecosystem and material circulation in the Arctic region are significantly affected by global warming.In this study, the meltwater areas near different geomorphological features in the Ny-lesund region of Norway were taken as the research object.The purpose of this study was to analyze the diversity of archaeal community in meltwater soil and the soil physicochemical factors affecting the diversity of archaeal community.The 16sRNA of Archaea in soil samples were sequenced by high-throughput sequencing technology.At the phylum level, Halobacterota was the highest in relative abundance.At the genus level, the relative abundance of Rice_Cluster_ was the highest.The soil physicochemical factors that significantly affected the archaeal community were studied by redundancy analysis (RDA) and weighted gene co-expression network analysis (WGCNA).According to the results of RDA and WGCNA, NH4 + -N, SiO3 2--Si and MC were important physicochemical factors.WoeseArchaeales was identified as a hub genus by WGCNA.The combination of the two methods can accurately and comprehensively analyze the correlation between archaeal community and physicochemical properties.