Kurokawa Field Science Center Meiji University Kawasaki Japan;
Life and Environmental Sciences Department Shimane University Matsue Japan;
School of Agriculture Meiji University Kawasaki Japan;
Kurokawa Field Science Center Meiji University Kawasaki Japan;
Phytoremediation; Zinnia; 5-Aminolevulinic Acid; Soil Total Petroleum Hydrocarbon (TPH) Concentration; Soil Dehydrogenase Activity (DHA);