Figure 2
From: Deep soil C and N pools in long-term fenced and overgrazed temperate grasslands in northwest China
(a) Soil organic carbon (SOC) and (b) soil total nitrogen (TN) in fenced grassland (FG) and grazed grassland (GG). Note: the values are mean ± SD; difference significant was represented by asterisk(P < 0.05, denoted by *P < 0.01, denoted by **P > 0.05, denoted by NS).
