Figure 7.

Redundancy analysis (RDA) of the predicted FAPROTAX functions asscoated with soil physiochemical properties.(A) Functional groups that are related to carbon cycle. (B) Functional groups that are related to nitrogen cycle. WC, water content; T, temperature; WFPS, water-filled pore space; ${\text{NO}}_3^{-}$-N, nitrate nitrogen; ${\text{NH}}_4^{+}$-N, ammonia nitrogen; DOC, dissolved organic carbon; TC, total carbon; TN, total nitrogen; MBN, microbial biomass nitrogen; and MBC, microbial biomass carbon. Arrow lengths indicate the strength of the relationship between the soil property and the overall microbial community. The direction of the line indicates the direction of increase for a specific soil physiochemical property. RS1-2: autumnand winter of 2015 at Baotianman; RS3-4: springandsummerof 2016 at Baotianman; RS5-6: autumn and winter of 2015 at Jiangfengling; RS7-8: spring and summer of 2016 at Jiangfengling.