Figure 5. The D. indica’s relative coverage and its propagating influences on the biodiversity indices of weed communities at each summer from 2012 to 2014 in OM.

D, Simpson index; H′, Shannon–Wiener index; E, Pielou index. “S” for sampling time means summer at mid-July. Data are means ± standard error. Different capital letters indicate significant difference of the relative coverage of D. indica and different lowercase letters indicate significant difference of each biodiversity index at P < 0.05 level among sampling years separately (ANOVA, LSD test).