四川雷波县重点耕地区土壤硒含量特征及其成因分析

doi:10.11720/wtyht.2020.1552

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Abstract

Selenium is a trace element that has an important impact on human health and hence has received increasing attention in recent years. There are many factors affecting the level of selenium in the soil, and the differences in different regions are obvious. In this paper, the content, distribution and main influencing factors of selenium in the soil of this area were studied in Gumi Town, Leibo County. The results show that the selenium content in the soil of the study area is not high, mainly concentrated around 0.226×10^-6. Selenium content in soil is positively correlated with organic matter, thiophilic heavy elements cadmium, mercury, lead, arsenic and zinc, but is not simply linearly correlated with pH value. In soils with different acidities and alkalinities as well as different land use patterns and parent materials, the two are significantly different. The selenium content in the soil in the survey area is mainly controlled by the parent material of the soil. The Silurian and Ordovician black shale and carbonate area in the old strata are more likely to be enriched with selenium, while the selenium content in the Triassic sandstone area in the newer strata is lower.

Key words： soil selenium influencing factors soil parent material Leibo County, Sichuan Province

Received: 26 November 2019 Published: 26 October 2020

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	Articles by authors
	Zhang-Liang SHI
	Li-Xin JIN
	Chao LIAO
	Yu-Han BAO
	Xiao-Bo LIU
	Huan DENG
	Ke-Quan XU

Cite this article:

Zhang-Liang SHI,Li-Xin JIN,Chao LIAO, et al. Content characteristics and genesis of soil selenium in important cultivated areas of Leibo County, Sichuan Province[J]. Geophysical and Geochemical Exploration, 2020, 44(5): 1253-1260.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1552 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I5/1253

Characteristics of total soil selenium content in the key cultivated land area of Leibo County

Frequency distribution of selenium content in surface soil in the key cultivated land area of Leibo County

Statistics on the area distribution of selenium-rich soil environmental quality in key cultivated areas of Leibo County

Spatial distribution characteristics of soil selenium in key farming areas of Leibo County

Characteristics of selenium content in different land use types

Characteristics of selenium content in different soil types

Relationship between soil pH and selenium content

Correlation coefficient table of selenium and other indicators

The relationship between soil selenium and organic matter, sulfur-philic elements and other indicators

Statistics of selenium content in different soil parent materials

The distribution of selenium content in different soil parent materials

The distribution of main selenium-rich strata in the study area

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