新疆若羌县农用地表层土壤硒氟碘地球化学特征

doi:10.11720/wtyht.2022.1563

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Abstract

This study investigated the surface soil of the agricultural land in Ruoqiang County, Xinjiang. Based on 142 surface soil samples collected in 2016, this study analyzed the selenium (Se), fluorine (F), iodine (I), Al₂O₃, and SiO₂ contents and the physicochemical proxies such as soil organic carbon (OrgC), total nitrogen (N), and pH of the surface oil in the study area. Then, this study explored the contents and distribution of biological elements Se, F, and I in the study area, as well as their influencing factors. The results are as follows. The soil in the study area is alkaline to strongly alkaline, with average Se, F, and I contents of 0.23×10^-6, 645×10^-6, and 1.06×10^-6, respectively. The average contents of Se and I are lower than their national soil background values, while the average content of F is much higher than its national soil background value. The Se, F, and I contents are positively correlated with each other and all of them are significantly positively correlated with total N. The Se content is negatively correlated with the SiO₂ content, while the I content is positively correlated with the Al₂O₃ content. The contents, distribution, and geochemical characteristics of Se, F, and I are controlled by parent materials and soil types. Among different parent materials, the Se, F, and I contents are higher in the soil of diluvium areas but are the lowest in the soil of alluvium-diluvium areas. Among different types of soil, the contents of the three elements are high in the irrigation-silted soil, while the Se content is the highest and the F and I contents are the lowest in the forest-shrub-grassland soil.

Key words： selenium fluorine iodine geochemical characteristics Ruoqiang County

Received: 14 October 2021 Published: 03 January 2023

ZTFLH:

P632

Corresponding Authors: ZHOU Jin-Long E-mail: 2506786060@qq.com;zjzhoujl@163.com

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	Articles by authors
	Chang-Lian MA
	Jin-Long ZHOU
	Yan-Yan ZENG
	Gui-Bing REN
	Song-Tao WANG

Cite this article:

Chang-Lian MA,Jin-Long ZHOU,Yan-Yan ZENG, et al. Geochemical characteristics of selenium, fluorine, iodine in surface soil of the agricultural land in Ruoqiang County, Xinjiang[J]. Geophysical and Geochemical Exploration, 2022, 46(6): 1573-1580.

URL:

https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2022.1563 OR https://www.wutanyuhuatan.com/EN/Y2022/V46/I6/1573

The location of the study area and sampling sites distribution

Analytical methods and detection limits of geochemical indicators of soils

Descriptive statistics of physicochemical parameters of surface soils(n=142)

Content characteristics of Se, F and I in different soil types

Content characteristics of Se, F and I in soils derived from different parent materials

Pearson correlation coefficients of physicochemical parameters in surface soils in the study area

Pearson principal component analysis of element contents of surface soils in the study area

Classification criteria and statistics of Se,F and I contents of surface soils

Grade zoning map of selenium, fluorine and iodine content in topsoil of the study area

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