干旱区研究

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2022 , Vol. 39 >Issue 2: 477 - 484

DOI: https://doi.org/10.13866/j.azr.2022.02.15

土壤资源

准噶尔东部地区3种土壤类型137Cs与土壤颗粒的关系

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  • 1.新疆大学资源与环境科学学院,新疆 乌鲁木齐 830046
    2.核工业二一六大队,新疆 乌鲁木齐 830011
杨建军（1978-）,男,副教授,主要从事水土保持与荒漠化防治研究. E-mail: yjj@xju.edu.cn

收稿日期: 2020-08-14

  修回日期: 2020-09-24

  网络出版日期: 2022-03-30

基金资助

国家自然科学基金项目(41661057)

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

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  • 1. College of Resources and Environment Science, Xinjiang University, Urumqi 830046, Xinjiang, China
    2. Geology Party No. 216, CNNC, Urumqi 830011, Xinjiang, China

Received date: 2020-08-14

  Revised date: 2020-09-24

  Online published: 2022-03-30

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摘要

为更加深入地了解土壤颗粒对137Cs分布的影响,选取新疆准噶尔东部地区沙土、灰棕漠土和灰漠土3种主要的土壤类型,探讨不同土壤类型及自然地理环境条件下137Cs与土壤颗粒的关系。结果表明：沙土、灰棕漠土和灰漠土均以>50 μm的颗粒占据主导地位,其占比介于51.35%~90.22%,中值粒径（D50）表现出风沙土>灰棕漠土>灰漠土的趋势;灰棕漠土 137Cs质量活度变化范围为0.32~15.70 Bq·kg-1,其土壤剖面分布与<2 μm和2~5 μm的土壤颗粒具有较强的一致性;风沙土 137Cs比活度的分布分别与>50 μm土壤颗粒（0~14 cm）含量及D50剖面（0~12 cm）分布趋于一致,而灰漠土 137Cs比活度与各粒级土壤颗粒剖面并未表现出相同的变化趋势;风沙土和灰漠土中,对137Cs质量活度影响最大的均为2~5 μm粒级的土壤颗粒,而灰棕漠土中 137Cs受10~50 μm粒级土壤颗粒影响最大。准噶尔东部地区3种土壤类型 137Cs均与土壤颗粒存在密切关系,通过土壤剖面不同粒级土壤颗粒含量预测不同剖面137Cs质量活度具有一定参考价值。

关键词： 137Cs; 土壤颗粒; 土壤类型; 准噶尔盆地东部地区

本文引用格式

杨建军,王和平,王明力,关添泽 . 准噶尔东部地区3种土壤类型137Cs与土壤颗粒的关系[J]. 干旱区研究, 2022 , 39(2) : 477 -484 . DOI: 10.13866/j.azr.2022.02.15

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

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