Distribution characteristics of Cs-137 in soil profiles under different land uses and its implication

摘要

This paper presents a study of the distribution of Cs-137 in soils under three different land uses in a semiarid watershed. The results showed the average inventory of Cs-137 in the cultivated land, woodland and grassland was 888, 1489 and 1650 Bq/m(2), respectively. The pattern of depth distribution of Cs-137 in the soil profiles with cultivated land, woodland and grassland was disturbed, eroding and aggrading, and normal profiles, respectively. The coefficient of variation of Cs-137 inventory varied from 8.9 to 38.8 % for different land uses.