Fig. 3. Redundancy analysis for GRSP and soil physicochemical properties
Fig. 4. Linear regression analysis of GRSP (T-GRSP and EE-GRSP) with
Soil organic carbon (SOC), Total nitrogen (TN), and available phosphorus
(AP).
Fig. 5. T-GRSP and EE-GRSP
contents in control and fertilization (N, P, and NP) treatments.
Different capital letters indicate significant differences between two
soil layers in the same successional stages. Different lowercase letters
indicate significant differences among various successional stages in
the same soil layers at 0.05 level.
Fig. 6. (a) The soil organic
carbon content in control and fertilization (N, P, and NP) treatments.
Different capital letters indicate significant differences between two
soil layers in the same successional stages. Different lowercase letters
represent significant differences among different successional stages in
the same soil layers at 0.05 level. (b) Relationship of GRSP (T-GRSP and
EE-GRSP) with Soil organic carbon (SOC).