3.5 Indicator groups of soil bacterial communities
A total of 33 phyla were found in the soil bacterial community of SF,
PB, and CSF, of which 21 phyla (63.6%) were found to be common in all
three, 22 phyla (66.63%) were found to be common in two of the three, 9
phyla (32.5%) were unique to SF, and neither PB nor CSF had unique
phyla (Fig. 3B).
A total of 83 classes were found in the soil bacterial communities of
SF, PB, and CSF, among which 48 classes (52.9%) were found to be common
in the three. There were 50 classes (60.21%) common in SF and PB, 52
classes (62.62%) common in CSF and SF, 50 classes (60.21%) common in
CSF and PB, 27 classes (32.5%) unique to SF, and neither PB nor CSF had
a unique class (Fig. 3E).
A total of 276 families were found in the soil bacterial communities of
SF, PB, and CSF, among which 146 families (52.9%) were found to be
common in the three. There were 153 families (55.44%) common in SF and
PB, 167 families (60.51%) common in CSF and SF, 161 families (58.33%)
common in CSF and PB, 78 families (28.3%) unique to SF, 1 family
(0.362%) unique to PB, and 8 families (2.9%) unique to CSF (Fig. 3I).
A total of 392 genera were found in the soil bacterial communities of
SF, PB, and CSF, among which 183 genera (46.7% of the total genera)
were found to be common in the three (Fig. 3C, F). There were 195 genera
(49.76%) common in SF and PB, 221 genera (56.39%) common in CSF and
SF, 208 genera (53.08%) common in CSF and PB, 115 genera (29.3%)
unique to SF, 7 genera (1.79%) unique to PB, and 12 genera (3.06%)
unique to CSF (Fig. 3L).
LEfSe analysis identified the indicator groups of soil bacterial
communities for three types of sites (Fig. 4). Twenty-four indicator
species of SF were identified, which belong to 2 phyla, 4 classes, 6
orders, 7 families, and 5 genera. Three indicator species of PB were
identified, which belong to 1 order, 1 family, and 1 genus. Fifteen
indicator species in CSF were identified, which belonged to 1 phylum, 2
classes, 1 order, 5 families, and 6 genera.