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).