Geochemical characteristics of soil selenium and evaluation of Se-rich land resources in the central area of Guiyang City, China

Pan, Ziping; He, Shan; Li, Chaojing; Men, Wei; Yan, Chengzhi; Wang, Fang

doi:10.1007/s11631-016-0136-0

Cited by 12 publications

(4 citation statements)

References 9 publications

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“…The Permian in Lianyuan City developed an Se-rich black rock series that provide abundant Se resources for Se-rich soil. A number of studies have concluded that the parent material is the most critical factor influencing soil Se content [10,14]. The results of factor detection again prove the above conclusion.…”

Section: Driving Factors Of Spatial Distribution For Topsoil Sesupporting

confidence: 56%

“…Once absorbed in plants, it enters the human body through the food chain [8,9]. Therefore, human Se intake is primarily dictated by the Se content in soil [10]. However, the distribution of Se in soil is extremely uneven.…”

Section: Introductionmentioning

confidence: 99%

“…The factors affecting soil Se distribution are not singular. Among them, parent material is usually considered the most important influence on Se levels in soil [10,14]. Se-rich soil can be formed through the weathering of Se-rich rocks [15].…”

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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Section: Driving Factors Of Spatial Distribution For Topsoil Sesupporting

confidence: 56%

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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“…At present, there are few investigations and studies on regional and local soil selenium distribution characteristics and selenium-enriched land resources. Only a few scholars have carried out research studies on the selenium enrichment levels of soils and related crops in Kaiyang, Fenggang, and the central district of Guiyang (Li, 2004;Lian, 2011;Pan, 2017). However, there are currently no reports on selenium in the soil of the Guiyang area, which has been thoroughly studied yet.…”

Section: Introductionmentioning

confidence: 99%

Geochemical characteristics of soil selenium and evaluation of selenium-rich land resources in Guiyang area

Pan¹,

Feng²,

Wang³

et al. 2023

Front. Geochem.

Self Cite

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Selenium concentration in soil is of great importance for the production of selenium-rich crops. In this article, we studied the geochemical characteristics of soil selenium and evaluated selenium-rich land resources in the Guiyang city area using results from a Guizhou multi-purpose regional geochemical survey. The results indicate that 1) the selenium content in topsoil in the Guiyang area ranges from 0.11 to 4.12 mg kg−1, with an average value of 0.70 mg kg−1, which is 2.4 times and 3.5 times the national and world soil background values, respectively, while the selenium content in deep soil ranges from 0.11 to 4.10 mg kg−1, with an average value of 0.42 mg kg−1, which is 1.4 and 2.1 times the national and world soil background values, respectively; in the vertical profile, the selenium content in soil decreases with the increase in soil depth. 2) The main factors affecting the distribution of selenium in soil include soil parent material, soil physical and chemical properties, and other components, such as soil type and land use, among which the soil parent material (rock) plays a decisive role. The selenium in soil mainly comes from the soil parent rock, increasing accordingly with the increase of the selenium background value of the parent rock; the physical and chemical properties of the soil and other components impose certain influences on the selenium content. Selenium presents a significant linear positive correlation with sulfur and organic carbon, while it has a negative correlation with the pH value; there is no significant difference in the selenium content in different soil types, following the distribution order of paddy soil >yellow soil> skeletal soil> lime soil> purple soil; land use has a certain effect on selenium in soil, following the distribution order of garden land > construction land > grassland > farmland > rocky hills > forest land. 3) The area of selenium-enriched soil in the study region is 11,408 km2, with 91.76% of selenium-enriched soil and 8.24% of general soil or extremely little excess-selenium soil. Therefore, the vast majority of soil in Guiyang is selenium-enriched. The city has large and abundant selenium-enriched areas, which are domestically and internationally rare and provides particularly favorable resource conditions for developing selenium-enriched efficient mountain agriculture to expedite rural revitalization.

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Geochemical characteristics, source analysis, influencing factors, and reserves of soil Selenium in Wuming, Guangxi, China

Li,

Wang,

Wang

et al. 2024

Environ Geochem Health

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Geochemical characteristics of soil selenium and evaluation of Se-rich land resources in the central area of Guiyang City, China

Cited by 12 publications

References 9 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

Geochemical characteristics of soil selenium and evaluation of selenium-rich land resources in Guiyang area

Geochemical characteristics, source analysis, influencing factors, and reserves of soil Selenium in Wuming, Guangxi, China

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