The Absorption and Distribution of Heavy Metals of Dominant Plant for Ecological Restoration of Stone Coal Mine

Figure 4

Effect of recovery time on contents of heavy metal in different organs of Indigofera amblyantha Craib. The CK(21) represents the control group at twenty-first month. The error bar was the standard error.

(a) Pb

(b) Cd

(c) Cr

(d) As

(e) Zn

(f) Sb

(g) Cu

(h) Ni

(i) Mn

(j) V