MEN	Molecular ecological network
PB	Peibei
ZC	Zoucheng
YQ	Yangquan
DT	Datong
PCA	Principal component analysis
NMDS	Non-metric multidimensional scaling
avgCC	Average clustering coefficient
avgK	Average degrees
GD	Average path distance
SRAs	Standardized relative abundances
AAP	Annual average precipitation
AAT	Annual average temperature
SOM	Soil organic matter
AN	Ammonium nitrate
EC	Electrical conductivity
NN	Nitrate-nitrogen
AP	Available phosphorus
AK	Available potassium
CCA	Canonical correspondence analysis
VPA	Variation partition analysis
RRC	Response ratio calculation
LEfSe	Linear discriminant analysis Effect Size