3.1 Variation in rhizosphere soil properties at different forest
ages
During the restoration of R. pseudoacacia , rhizosphere soil
properties typically changed along the chronosequence (Table S2). Across
all samples, most soil properties
(SOC, SOM, TN, AP,
NO3--N,
NH4+-N, MBC, MBN, DOC, and DON)
increased significantly from RS15 to RS35. In contrast, SOC, SOM, and TN
contents were significantly lower in RS45 than in RS35. Furthermore,
soil
pH values decreased significantly from RS15 to RS35, while there was no
considerable change in soil pH values between RS45 and RS15.