天津市蓟州区富硒土壤成因与土壤硒来源研究

doi:10.11720/wtyht.2019.0255

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Abstract

Taking the selenium-enriched soil of Jizhou in Tianjin as the research object, the causes and influential factors of selenium-enriched soil were analyzed. The results showed that the average content of selenium in soil of the study area was 0.37×10 ^-6, which was higher than the national average level of selenium (0.29×10 ^-6), and the proportion of selenium-enriched soil (>0.4×10 ^-6) was 31.7%. The soil selenium content in the study area was significantly affected by soil type, land use pattern and organic matter content, and it was significantly positively correlated with heavy metals such as cadmium, lead, arsenic and zinc in soil. The content of selenium in dry deposition of atmosphere in the study area is 2.77×10 ^-6, which is 12 times of the local background value, while the content of selenium in organic fertilizer is 0.88×10 ^-6, which is 3.8 times of the background value. The amounts of selenium in dry deposition and organic fertilizer were 0.53 mg/(m ²·a) and 2.2 mg/m ², respectively, indicating parent material, dry deposition and organic fertilizer were important sources of soil selenium in soil.

Key words： Jizhou selenium-enriched soil causes influential factors

Received: 07 May 2019 Published: 28 November 2019

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Corresponding Authors: Yao-Dong YANG E-mail: fivess@139.com

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	Wei XIE
	Yao-Dong YANG
	Jia-Yu HOU
	Guo-Cheng LI
	Gui-Qin JIAN

Cite this article:

Wei XIE,Yao-Dong YANG,Jia-Yu HOU, et al. Studies on causes and influential factors of selenium-enriched soils in Jizhou district of Tianjin[J]. Geophysical and Geochemical Exploration, 2019, 43(6): 1373-1381.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2019.0255 OR https://www.wutanyuhuatan.com/EN/Y2019/V43/I6/1373

Soil sampling locations in northern Jizhou

The distribution of selenium-enriched soil in northern Jizhou

Land use status innorthern Jizhou

Statistics of selenium contents in different land use types

Correlation between organic matter and selenium contents in northern Jizhou

Correlation between pH and selenium contents in northern Jizhou

Percentage of different particle size in northern Jizhou

Statistics of heavy metals content in northern Jizhou

Correlation coefficients between selenium contents and heavy metals

Concentrations of selenium in rocks and soils in different strata
Jxw⁴—the fourth member of Wumishan formation;Jxg⁴—the fourth member of Gaoyuzhuang formation;Jxg²—the second member of Gaoyuzhuang formation;Jxw³—the third member of Wumishan formation;Chch⁴—the fourth member of Chuanlinggou formation;Chc²—the second member of Changzhougou formation

Changes of soil selenium in soil profiles

Concentration of selenium in atmospheric deposition, irrigation water and fertilizer

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