Appendix S1,S2,S3,S4,S5,S6,S7

Appendix S1 Variation in root biomass and its proportion of the plant community as measured using the drilling method in stratified soil layer in different months of the growing season. Appendix S2 Data and statistical analysis on live root biomass, total root biomass and proportion of live root to total root mass. Appendix S3 Data and statistical analysis on BNPP and root turnover rate Appendix S4 Data and statistical analysis on relationships between root turnover rate and the ratio of live root mass to total root mass. Appendix S5 Data and statistical analysis on aboveground biomass in June, July, August and September. Appendix S6 Data and statistical analysis on standing live biomass of functional groups of the plant community Appendix S7 Primary data of this paper