Science Advances

Supplementary Materials

The PDF file includes:

  • Supplementary Materials and Methods
  • Fig. S1. Global distribution of N addition experiments included in this meta-analysis.
  • Fig. S2. Relationships between the responses (ln R) of soil C storage and LME activity to N addition for various vegetation and soil types.
  • Fig. S3. Relationships between the responses (ln R) of soil C storage and LME activity to N addition for various N addition methods.
  • Fig. S4. Relationships between the responses (ln R) of soil C storage and LME activity to N addition for studies categorized by soil C/N ratio.
  • Fig. S5. Model-averaged importance of the predictors of the effects of N addition on soil C storage for studies that simultaneously reported soil pH in ambient and N addition treatments.
  • Fig. S6. Effects of N addition on cellulase activity and LME activity for all studies in our data set (that is, data S5).
  • Table S1. A detailed overview of the enzymes included in our meta-analysis.
  • Table S2. Evaluation of the model parameters used to explain soil C storage under N addition.
  • References (41108)

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Other Supplementary Material for this manuscript includes the following:

  • Data S1 (Microsoft Excel format). Database of N addition studies reporting soil C storage and cellulase activity and LME activity that were used in our analysis.
  • Data S2 (Microsoft Excel format). Database of N addition studies reporting plant productivity, soil C storage, soil pH, soil C/N, microbial community, and soil texture that were used in our analysis.
  • Data S3 (Microsoft Excel format). Database of N addition studies reporting soil recalcitrant C pool that were used in our analysis.
  • Data S4 (Microsoft Excel format). Database of N addition studies reporting cellulase activity and LME activity, but not soil C storage.
  • Data S5 (Microsoft Excel format). Database of N addition studies reporting individual components of cellulase activity and LME activity.

Download Data S1 to S5

Files in this Data Supplement: