Concentrations of 8 REEs (La

Ce

Nd

Sm

Eu

Tb

Yb and Lu) in fern and their host soil

collected from the south China

have been determined by INAA. The chondrite-normalized REE patterns for different plants and different parts of Dicranopteris dichotoma and their host soil were studied. The results showed that the older the leaves are

the higher the concentration levels of REE are. Particularly

leaves of the fern (Dicranopteris dichotoma) contained extremely high concentration of the total REE(332—3411 礸/g). Generally

the REE distribution pattern in each sort of plant was very similar and reflected the characteristics of their host soil. However

the chon-drite-normalized REE patterns in some plants relative to the host soils exhibited obvious fractionation

such as the de-pletion of the heavy REE in leaves of the fern species

Dicranopteris dichotoma.