Distribution Pattern and Enrichment Mechanism of Selenium in Topsoil in Handan Se-Enriched Belt, North China

Hao, Huidi; Zhang, Minmin; Wang, Jinxi; Jiang, Shuting; Ma, Juanjuan; Hu, Yafan; Niu, Hongyu; Panchal, Balaji; Sun, Yuzhuang

doi:10.3390/su14063183

Cited by 6 publications

(6 citation statements)

References 63 publications

(61 reference statements)

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“…As an efficient irrigation method, water-saving drip irrigation gradually releases water into the surrounding soil through point sources, and then affects the migration of dissolved selenium in the soil. The monitoring results showed that drip irrigation could promote the vertical migration of effective selenium in the soil, especially in the close soil layer, where the selenium content increased [13]. This phenomenon may be related to the soil moisture gradient caused by dripping water, which drives the movement of the dissolved selenium.…”

Section: Influence Of Drip Irrigation Conditions On Effective Soil Se...mentioning

confidence: 97%

The Migration Characteristics of Effective Selenium in Soil in Situ

2023

jmcs

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One of the two trace elements needed for plant growth is selenium. The transmission of selenium in soil is critical to crop absorption and food safety. This paper studies the characteristics of effective selenium transmission in soil under drip irrigation conditions. Through the combination of field experiments and indoor simulation, the distribution and change of selenium in the soil profile were monitored. The research results show that drip irrigation significantly affects the vertical and horizontal migration of effective soil selenium, forming a specific distribution pattern, and dripping water and soil type are the main factors affecting selenium transmission. This article reveals the mechanism of effective selenium transmission in Shatian Youyuan, which provides a scientific basis for accurate drip irrigation and selenium nutrition management. It is further explained that the drip irrigation system not only transports water, but also affects the distribution of selenium in the soil. Through the combination of field experiments and indoor simulation, the researchers analyzed in detail the distribution and change of selenium in the soil profile of Shatian Youyuan. The study found that under drip irrigation conditions, the vertical and horizontal migration of effective selenium in the soil was significantly affected, forming a unique distribution pattern. In addition, the research results also revealed two main factors affecting selenium transmission in the soil: dripping water and soil type. Under the conditions of different drip water and soil types, the migration law of selenium is significantly different. These findings provide an important basis for accurate drip irrigation and selenium nutrition management, which helps to improve crop yields and food safety. In a word, by studying the transmission characteristics of effective selenium in the soil under drip irrigation conditions, this paper reveals the transmission mechanism of selenium in Shatian Youyuan, which provides scientific guidance for the rational utilization and management of selenium in China's agricultural production. This will not only help to improve crop yield and quality, but also have a positive impact on food safety and human health.

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Section: Influence Of Drip Irrigation Conditions On Effective Soil Se...mentioning

confidence: 97%

The Migration Characteristics of Effective Selenium in Soil in Situ

2023

jmcs

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“…Conversely, an intake below 17 µg per day may lead to conditions such as Kashin-Beck disease [5], cardiovascular complications ( [6], or susceptibility to viral infections. With the burgeoning interest in the geochemical behaviors of Se and its biomedical functionalities, Se is garnering increasing global attention [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Existing studies have demonstrated that plant absorption and enrichment of Se predominantly hinge upon the Se forms in soil [19][20][21][22][23][24][25][26][27], soil's physicochemical properties [19][20][21][22][23][24][25][26][27], and the plant's Se enrichment and absorption capabilities [19][20][21][22][23][24][25][26][27]. The principal determinant influencing Se migration within the soil-plant system is the soil's available Se content, with soil's physicochemical properties also emerging as pivotal factors influencing this availability [7][8][9][10][11][12][13][14][15][16][17][18]. Several studies have confirmed that in alkaline soils with favorable aeration conditions, Se primarily exists in the form of selenite [7][8][9][10][11][12][13]…”

Section: Introductionmentioning

confidence: 99%

“…The principal determinant influencing Se migration within the soil-plant system is the soil's available Se content, with soil's physicochemical properties also emerging as pivotal factors influencing this availability [7][8][9][10][11][12][13][14][15][16][17][18]. Several studies have confirmed that in alkaline soils with favorable aeration conditions, Se primarily exists in the form of selenite [7][8][9][10][11][12][13][14][15][16][17][18]. In this form, Se readily dissolves, is absorbed, and is utilized by plants, thereby enhancing its biological efficacy.…”

Section: Introductionmentioning

confidence: 99%

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Form, Bioavailability, and Influencing Factors of Soil Selenium in Subtropical Karst Regions of Southwest China

Hu,

Xiong,

et al. 2024

Applied Sciences

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Karst regions are characterized by unique geological formations that pose challenges to soil fertility and plant nutrition. In this study, we investigated the distribution and interactions of selenium (Se) in soils of Zheng’an County, a representative karst region in subtropical China. The results showed that the Se enrichment in the soils of Zheng’an County was high, with total contents ranging from 0.49 to 3.87 mg/kg and an average of 1.22 mg/kg, making the area Se-rich. Despite the abundance of Se, the effective percentage of Se uptake by plants was relatively low due to the generally moderately acidic nature of the soils in the region (pH: 5.98–6.60), which encourages the conversion of the available Se into forms that are not readily accessible. In addition, the high organic matter (OM) content (21.92–127.66 g/kg) promoted Se retention by interacting with Ca2+ in carbonate rocks. In addition, the clay content (50.73% to 76.19%) enhanced Se adsorption and limited Se availability. In conclusion, this study provides a basis for soil management and ecological restoration strategies in karst landscapes, highlights new insights into the dynamics of Se, and calls for further research to elucidate the Se availability mechanism and improve the efficiency of Se uptake by plants. Meanwhile, this study provides the first systematic study of Se transport and transformation, as well as Se-enriched Gastrodia elata in karst regions, and provides a preliminary understanding of the geochemical behavior of Se in karst regions.

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“…Selenium is an essential trace element for human health with crucial biological functions. Hao [5] showed Se concentrations and physicochemical properties of soils in China by determining their spatial distribution, enrichment degree, influencing factor, and geological source. The results show that: (1) Se concentrations vary from 0.00 to 1.95 µg/g, with an average of 0.45 µg/g, which exceed the mean of Se in soils in China (0.29 µg/g) and the Hebei Plain area (0.21 µg/g).…”

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confidence: 99%