安徽涡河沿岸土壤氟含量特征及其影响因素

doi:10.11720/wtyht.2020.1253

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Abstract

The 0~20 cm surface soil, the horizontal profile soil and the 0~200 cm vertical profile soil samples were collected systematically to determine the content of soil fluoride and related indicators, and the distribution characteristics and influencing factors of soil fluorine content in surface soil and profile soil were studied. The results show that the fluorine content in the surface soil of the study area ranges from 448×10 ^-6 to 1 009×10 ^-6, with the average content being 685×10 ^-6. The distribution characteristics of fluorine content in surface soil are obviously restricted by geological and geomorphological conditions. The soil with high fluoride background (>730×10 ^-6) is concentrated in the sub-clay of Qhb group, and the landform is flood plain.The surface soil fluorine is positively correlated with TFe₂O₃ (r=0.76), Mn (r=0.79), CaO (r=0.66) and Al₂O₃ (r=0.59), and negatively correlated with w(SiO₂)/w(Al₂O₃).In the vertical section, soil fluorine is mainly concentrated in 0~155 cm. Iron and manganese oxides are important factors that restrict the vertical distribution of soil fluorine.

Key words： Guohe River soil fluorine distribution characteristics influencing factors clay loam

Received: 06 May 2019 Published: 22 April 2020

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	Articles by authors
	Peng-Fei LI
	Fu-Rong CHEN
	Guo-Qiang DU
	Chun-Jun TAO
	Chao LIU
	Kun LIU

Cite this article:

Peng-Fei LI,Fu-Rong CHEN,Guo-Qiang DU, et al. Characteristics and influencing factors of fluorine content in soils along the Guohe River in Anhui Province[J]. Geophysical and Geochemical Exploration, 2020, 44(2): 426-434.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1253 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I2/426

Sampling sites in the study area

Parameters of the sample analysis quality

Element content parameters of surface Layer soil along the Guohe River in Anhui Province

Classification standard of the soil fluorine content

Distribution pattern of surface soil components in different geological backgrounds

Correlation between surface soil fluorine and main indicators(n=726)

Fluorine geochemical distribution of surface soils along the Guohe River in Anhui Province

Color division of soil fluorine geochemical

Distribution of elements and organic matter in horizontal profile soil

Vertical distribution of soil composition of section CP01

Vertical distribution of soil composition of section CP02

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