Figure 1

(A) Number of bacterial genera identified in the NIH Human Microbiome Project (HMP) and China project. (B) The relationship between the identified genus number and read number, as well as Pielou index vs read number in the HMP and our data in this study. (C) Factors affecting the gut microbiota. Red arrow represented that the gut microbiota of this group (Age 20–30 or people having yogurt every day) are with genus number and Pielou index values both higher than those in the other group. Green arrow represented that the gut microbiota of this group (BMI 26–30 or people having smoking every day) are with lower genus number and Pielou index values.