REDUCTION OF DOWNWARD WATER MOVEMENT AND POTENTIAL LEAD CONTAMINATION BY PLANT ROOTS

Abstract

Phytoremediation is one of the environmental rehabilitation techniques that utilize physiological function of plant. In this study, a colum experiment was carried out to examine the reduction of leachate and the migration of pore water by plants. Migration of pore water toward the lower part was restrained by high volumetric water content in root area( G.L.-10cm and G.L-30cm). As a result, the amount of leachate was decreased by vegetation. The vegetation roots relaxed migration of pore water. Lead concentration of pore water and leachate were not changed by vegetation. Restraint and relaxation of pore water migration toward the lower part by vegetation roots is effective for the prevention of lead dispersion.