Peculiarities of absorption of radionuclides by perennial and annual plants from contaminated soils

The phytoremediation properties of some annuals and perennials in soil contaminated with Cs137 are compared. It is shown that some perennials, such as Spiraea japonica and Fern, no longer absorb Cs137 after some critical value of soil contamination is reached. Chenopodium (annual plant) withstands high levels of soil contamination with Cs137 before withering. Only before the end of the life cycle does it lose its ability to resist and Cs137 is being absorbed.