Root Pb concentration in invasive S. canadensis only accounted for 6.42%, 5.93% and 11.21% of those in non-invasive K. striata under corresponding Pb treatments.

• 入侵种加拿大一枝黄花的根部铅浓度分别为鸡眼草各个铅处理中根部铅浓度的6.；42%25，5