Fig. 6From: Elevated atmospheric CO2 impact on carbon and nitrogen transformations and microbial community in replicated wetlanda, b Mean concentration of water TN and soil TN for two treatments during the experimental periods. The average percent showed the CO2 effect. The length of each value was mean (n = 8 times observation with duplicates) indicated in elevated CO2 (black) and ambient CO2 (white) and standard error (S.E.) located on the length of valuesBack to article page