Geopedology-climate interactions govern the spatial distribution of selenium in soils: A case study in northeastern Brazil

Nascimento, Clístenes Williams Araújo do; Silva, Fernando Bruno Viera da; Neta, Adelazil de Brito Fabricio; Biondi, Caroline Miranda; Lins, Simone Aparecida da Silva; Júnior, Agenor Bezerra de Almeida; Preston, Welka

doi:10.1016/j.geoderma.2021.115119

Cited by 18 publications

(5 citation statements)

References 63 publications

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“…The uneven geological distribution of Se-bearing minerals may contribute to the high variability of Se in soil. This finding is consistent with that of Williams et al [19].…”

Section: Se Contents In Topsoilsupporting

confidence: 94%

“…It was tentatively inferred that the extremely weak positive correlation between pH and Se resulted from high precipitation. In order to investigate the exact driving factor of this result, further investigation should explore the correlation between pH and different forms of Se [19].…”

Section: Relationship Of Soil Properties and Topography With Se Conte...mentioning

confidence: 99%

“…The distribution of Se in soil is not exclusively determined by its parent material. Se in soil is also influenced by environmental factors such as soil properties, soil type, topography, and precipitation [19,20]. The pH and soil OM content substantially influence the characteristics and functionalities of soil, acting as crucial physicochemical indicators in soil analyses.…”

Section: Introductionmentioning

confidence: 99%

“…It has also been reported that precipitation contributes 5610 tons of Se to the land each year [29], thereby representing an important source of Se in soil. Additionally, precipitation also impacts soil moisture, clay content, and pH, which in turn affect the ability of the soil to store Se [19].…”

Section: Introductionmentioning

confidence: 99%

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Spatial Distribution and the Key Impact Factors of Soil Selenium of Cultivated Land in Lianyuan City, China

Guo,

Chen,

Lin

et al. 2024

Agriculture

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Selenium (Se) is a micronutrient that has attracted significant attention, because the threshold for human health is low. During soil surveys in China, large areas of low-Se soil were found, and this condition may increase the probability of people suffering from Se deficiency. A multi-purpose regional geochemical survey conducted in the Lou Shao basin of Hunan Province found abundant Se-rich soils in Lianyuan City. However, as the primary grain-producing area in Hunan Province, the key factors affecting the spatial distribution of soil Se in the cultivated land of Lianyuan City remain to be elucidated. Therefore, based on the data of 5516 topsoil samples (0–20 cm) of cultivated land in Lianyuan City, we used geostatistics, correlation analysis, and a Geodetector to explore the effects of geological conditions (strata), soil types, soil properties, and topography on the distribution of Se in soil. The results showed that (1) in comparison to cultivated land in the Chinese mainland, Japan, Belgium, and Sweden, the cultivated land in Lianyuan City exhibits higher Se contents, with Se-sufficient and Se-rich areas accounting for 9.74% and 88.96% of the total area, respectively; (2) the distribution of high-Se soil was consistent with that in the Longtan Formation, Dalong Formation, and Daye Formation; (3) organic matter (OM) showed a positive correlation with Se, while both the elevation and slope were negatively correlated with Se; (4) stratum had the most significant effect on the spatial variation in soil Se, followed by OM. Lianyuan City is a typical Se-rich area, and the high level of Se in soil reduces the risk of local residents suffering with diseases caused by Se deficiency. The synergistic effect of stratum and OM is the key factor influencing Se enrichment in soils. Moreover, low-lying flat areas are more conducive to the accumulation of Se. This study will help farmers to identify suitable Se-rich cultivation areas in order to increase the Se content in crops, thereby providing a valuable basis for improvements in human health and the optimization of agricultural strategies.

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“…The uneven geological distribution of Se-bearing minerals may contribute to the high variability of Se in soil. This finding is consistent with that of Williams et al [19].…”

Section: Se Contents In Topsoilsupporting

confidence: 94%

Section: Relationship Of Soil Properties and Topography With Se Conte...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial Distribution and the Key Impact Factors of Soil Selenium of Cultivated Land in Lianyuan City, China

Guo,

Chen,

Lin

et al. 2024

Agriculture

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“…Differences in climate (precipitation), bedrock and soil organic matter lead to differences in soil Se content in different regions [24]. The soil Se content is mainly obtained from various parent materials of the crust [25].…”

Section: Introductionmentioning

confidence: 99%

Study on the Migration and Accumulation of Selenium between Soil and Vegetations

et al. 2022

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Selenium (Se) is an essential trace element for human health, and humans mainly consume Se through diet. China is recognized as a Se-deficient country, and the study of Se migration and accumulation relationships between crops and soils is essential for Se-deficient areas. In this experiment, the greenhouse pot experiment of Chinese cabbage (Brassica rapa L. ssp. pekinensis), wheat (Triticum aestivum L.) and pepper (Capsicum annuum L.) were carried out with the Guanzhong region of Shaanxi Province and common farmland soils from Beijing Province. The relationship between the Se content in soil and crops organs (e.g., roots, stems, leaves, grain and fruit) and the differences in the Se-enriching capacity of the organs were analyzed. The following results were obtained: (1) all three field crops could absorb Se from soil, including Se-rich and -regulated soil and reach the standard of Se-enriched vegetables; (2) different organs of Chinese cabbage had different Se-enriching capacity, which can be arranged as leaf > stem > root, while the Se enrichment capacity of wheat was root > leaf > stem > grain, and for pepper it was root > leaf > fruit > stem; (3) when the soil Se regulation content reached 1.0–1.5 mg/kg, the utilization rate of Se in Chinese cabbage and pepper were higher, but when the soil Se regulation reached 4.0–5.0 mg/kg, the utilization rate of Se in wheat was higher.

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Sources of Selenium and Nano-Selenium in Soils and Plants

El-Ramady

Omara

Elsakhawy

et al. 2022

Sustainable Plant Nutrition in a Changing World

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Geopedology-climate interactions govern the spatial distribution of selenium in soils: A case study in northeastern Brazil

Cited by 18 publications

References 63 publications

Spatial Distribution and the Key Impact Factors of Soil Selenium of Cultivated Land in Lianyuan City, China

Spatial Distribution and the Key Impact Factors of Soil Selenium of Cultivated Land in Lianyuan City, China

Study on the Migration and Accumulation of Selenium between Soil and Vegetations

Sources of Selenium and Nano-Selenium in Soils and Plants

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