Figure 3
From: Divergent Effects of Nitrogen Addition on Soil Respiration in a Semiarid Grassland
Relationship between soil respiration and (a) plant belowground biomass and (b) soil microbial biomass carbon (MBC). Control = no N added, LN = low-level N addition, HN = high-level N addition. The results of analysis showed in a and b were based on simple linear regression.
