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. 2021 Nov 2;6(6):e00667-21. doi: 10.1128/mSystems.00667-21

TABLE 2.

Partial Mantel test analysis between the nirK- and nirS-type denitrifier communities and environmental factors along the elevation gradienta

Factor nirK-type communities
 nirS-type communities
pMantel.r P value pMantel.r P value
Elevation 0.02 0.22 −0.07 1.00
Longitude 0.11 0.01* 0.24 0.00**
Latitude 0.07 0.04* 0.11 0.01*
pH 0.28 0.00** 0.29 0.00**
NH4+-N 0.10 0.02* 0.16 0.00**
NO3−-N −0.04 0.76 0.10 0.04*
TC 0.03 0.23 0.12 0.01*
TN 0.03 0.20 0.11 0.01*
TC/TN 0.05 0.14 0.04 0.21
Conductivity 0.05 0.14 0.14 0.01*
MAT −0.08 1.00 −0.10 1.00
MAP 0.02 0.21 −0.05 0.99
Plant richness 0.15 0.00** 0.36 0.00**
DBH-DB 0.03 0.23 0.19 0.00**
DBH-EB 0.03 0.26 0.18 0.00**
DBH-DC 0.13 0.00** 0.31 0.00**
a

TC, total carbon; TN, total nitrogen; MAT, mean annual air temperature; MAP, mean annual precipitation. DBH represents the total diameter at breast height, while DBH-DB, DBH-EB, and DBH-DC represent the percent representation of deciduous broadleaf trees, evergreen broadleaf trees, and dark coniferous trees, respectively, in total DBH. *, P< 0.05; **, P < 0.01.