Fig. 3: Potential factors related to microbial- and plant-derived C.
From: Degradable film mulching increases soil carbon sequestration in major Chinese dryland agroecosystems
a Relative importance of variables that affected microbial-derived C. b Relationship between microbial-derived C and CUE. c Relative importance of variables that affected plant-derived C. d Relationship between plant-derived C and BEG. Shadows denote the 95% confidence intervals for the regression lines. *p < 0.05; **p < 0.01. SWC soil water content, ST soil temperature, ABG aboveground biomass, BEG belowground biomass, CERs annual C emissions from soil respiration, CERh annual C emissions from heterotrophic respiration, CERa annual C emissions from autotrophic respiration, Bacteria bacterial PLFAs, Fungi fungal PLFAs, CUE microbial C use efficiency, Hy-EEAs hydrolytic C-acquiring extracellular enzyme activities, Ox-EEAs oxidative C-acquiring extracellular enzyme activities, YL Yangling, CW Changwu, PY Pengyang, AD Anding, NM conventional tillage without mulching, PM plastic film mulching, DM degradable film mulching. Source data are provided as a Source Data file.
