Fig. 4: Degradation-induced changes in soil nitrogen cycling parameters with the changes in various biotic and abiotic variables.
From: Context-dependent effects of grassland degradation on soil nitrogen cycling processes
The degradation effect was quantified by the response ratio (RR), which was computed as the natural logarithm of the ratio of degradation plots to non-degradation plots. n = 45. †, P < 0.1; *, P < 0.05. **, P < 0.01. The blank box with a diagonal line indicates that the response variable has not direct correlation with the explanatory variable based on ecological principles. GNM gross nitrogen mineralization, MIM microbial immobilization, GN gross nitrification, SM soil moisture, BD bulk density, DON dissolved organic nitrogen, DIN dissolved inorganic nitrogen, NAG β−1,4-N-acetyl-glucosaminidase, LAP leucine aminopeptidase, MBC microbial biomass carbon, MBN microbial biomass nitrogen, AOA ammonia-oxidizing archaea, AOB ammonia-oxidizing bacteria, SD slight degradation, MD moderate degradation, HD heavy degradation.
