福建省武平县富硒土壤特征及成因分析

doi:10.11720/wtyht.2021.1426

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Abstract

Based on the data of soil element content obtained from agricultural geological survey in Wuping County, Fujian Province, the authors studied the distribution characteristics of soil selenium content and its controlling factors. According to the result obtained, the average value of selenium content in the study area is 0.25×10^-6, the high value area of soil selenium is mainly distributed in the south and east of the investigation area, and the average value of selenium content is 0.42×10^-6, reaching the standard of selenium enrichment; the selenium content of the soil in the study area is mainly controlled by the geological background, and the content of selenium in the Carboniferous and Permiancarbonate strata and coal-bearing strata is relatively high The average selenium content of marine sedimentary rock area is the highest, reaching 0.34×10^-6. The average values of selenium content in pyroclastic rock, granite area and metamorphic rock area are similar, being 0.25×10^-6 and 0.24×10^-6, respectively. Soil selenium content in tea garden (0.57×10^-6) and orchard (0.40×10^-6) is higher than that in paddy field (0.25×10^-6). Soil physical and chemical properties have an important impact on selenium content, which shows that soil selenium content has significant correlation with soil pH, organic matter and iron oxide.

Key words： Wuping County selenium rich soil content characteristics distribution characteristics genetic analysis

Received: 28 August 2020 Published: 27 July 2021

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	Xing-Sheng WU

Cite this article:

Xing-Sheng WU. Characteristics and genesis of selenium-rich soil in Wuping area, Fujian Province[J]. Geophysical and Geochemical Exploration, 2021, 45(3): 778-784.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.1426 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I3/778

Characteristics of soil total selenium content in Wuping County

The distribution of selenium content in soil

Characteristic values of soil heavy metal content in Wuping County

Proportion of soil heavy metal environmental quality grade in Wuping County

Geology and distribution of clean selenium rich soil in Wuping County

Statistical values of soil selenium content in different parent material areas of Wuping County

Statistical values of soil selenium content in different land use areas of Wuping County

Scatter plot of soil pH and Se content

Scatter plot of TFe₂O₃ and Se contents in soil

Scatter plot of soil organic matter content and Se content

Statistical table of correlation between selenium and other elements (n=292)

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