Arid Zone Research ›› 2022, Vol. 39 ›› Issue (2): 477-484.doi: 10.13866/j.azr.2022.02.15

• Soil Resources • Previous Articles     Next Articles

Relationship between 137Cs and soil particles in the main soil types in the eastern Jungar Basin

YANG Jianjun1(),WANG Heping1,WANG Mingli2,GUAN Tianze1   

  1. 1. College of Resources and Environment Science, Xinjiang University, Urumqi 830046, Xinjiang, China
    2. Geology Party No. 216, CNNC, Urumqi 830011, Xinjiang, China
  • Received:2020-08-14 Revised:2020-09-24 Online:2022-03-15 Published:2022-03-30

Abstract:

We selected three main soil types in the the eastern Jungar Basin, and explored the relationship between 137Cs and soil particles and natural geographic environment conditions to further understand the influence of soil particles on the distribution of 137Cs. The three soil types were dominated by soil particles > 50 μm, accounting for 51.35%-90.22% of the three soil types. The median particle size (D50) of aeolian sandy soil was greater than that of gray-brown desert soil, which was greater than that of gray desert soil. The range of 137Cs mass activity in gray-brown desert soil was 0.32-15.70 Bq·kg-1, The distribution of 137Cs specific activity in aeolian sandy soil is consistent with the particle content of soil >50 μm and the distribution of D50 profile, but the specific activity of 137Cs in gray desert soil followed a different trend from that of soil particles of various sizes. Among aeolian sand and gray desert soils, those with the greatest impact on the 137Cs mass activity were 2-5 μm soil particles, whereas 137Cs in the gray-brown desert soil were most affected by 10-50 μm soil particles. The content of soil particles in different grain fractions of the soil profile has certain reference value for predicting the mass activity of 137Cs in different profiles.

Key words: 137Cs, soil particle, soil type, the eastern Jungar Basin