Heavy Metal Pollution and Soil Quality Assessment under Different Land Uses in the Red Soil Region, Southern China

Yang, Zhiping; Zhang, Rong; Li, Hongying; Zhao, Xiaoyuan; Liu, Xiaojie

doi:10.3390/ijerph19074125

Cited by 12 publications

(4 citation statements)

References 50 publications

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“…It plays a crucial role in agriculture owing to its high production potential and research significance. However, the low pH of red soil results in the high solubility of heavy metals in their available state, making them easily absorbed by living organisms (Yang et al., 2022). Additionally, red soil has a low organic matter content because of the rapid degradation and conversion of organic matter (Herndon et al., 2017), which plays a crucial role in reducing the mobility of heavy metals in the soil layer containing various functional groups that can readily absorb and immobilize them (Xie et al., 2021).…”

Section: Resultsmentioning

confidence: 99%

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Li,

Jiang,

Lyu

2023

Soil Use and Management

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In light of growing concerns regarding food security and soil health, there is increasing emphasis on the assessment of soil health and efforts to improve or maintain the soil health of cultivated land. This case study Niutian Town in Jiangxi Province in southern China was selected as a typical red soil and a major grain‐producing area. This research involves an integrated evaluation model based on Entropy weight TOPSIS and emergy analysis to assess the soil health of cultivated land. An evaluation system was developed, comprising 31 indicators selected on the basis of resources and environments, with an emphasis on sensitive and promising microorganisms category indicators. Additionally, experiments were conducted to assess the ecological risk of soil pollution and develop novel soil conditioners. Our results indicate that Pb, Hg and Cd present a moderate ecological risk on 92.1% of the cultivated land. Furthermore, 56.8% of the cultivated land was ‘sub‐healthy’ or ‘unhealthy’. Biochar was found to be a soil conditioner with a good adsorption effect, with absorption rates reaching up to 99.9% and 88.3% for Pb and Cd, respectively. Additionally, g‐C3N4 was added to address pesticide contamination, which showed an adsorption rate of up to 75.2% for atrazine. This work develops a targeted remediation approach based on assessment results to address regional cropland soil health issues.

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Section: Resultsmentioning

confidence: 99%

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Li,

Jiang,

Lyu

2023

Soil Use and Management

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“…The available potassium (AvK) was determined by ammonium acetate extraction and flame photometry [36]. The cation exchange capacity (CEC) was determined by the ammonium acetate method [37]. The atomic state contents of the soil heavy metal pollution indicators cadmium (Cd), copper (Cu), zinc (Zn), nickel (Ni), lead (Pb), and chromium (Cr) were analyzed and determined by flame atomic absorption spectrophotometry [38].…”

Section: Soil Data Sources and Sample Collectionmentioning

confidence: 99%

Soil Quality Evaluation Based on A Minimum Data Set (MDS)—A Case Study of Tieling County, Northeast China

Qian¹,

Yu²,

Dong³

et al. 2023

Preprint

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Soil quality is related to food security and human survival and development. In recent years, due to the acceleration of urbanization and the increase of abandoned land, land degradation occurs, poor topsoil quality. In this study, the minimum data set (MDS) was constructed through principal component analysis (PCA) to determine the indicator data set for evaluating topsoil quality in Tieling County, China. In addition, the soil quality index (SQI) was calculated to analyze the spatial distribution characteristics and influencing reasons of topsoil quality in Tieling County. The re-sults showed that MDS included total potassium (TK), Clay, zinc (Zn), soil organic matter (SOM), soil water content (SWC), cation exchange capacity (CEC), pH, and copper (Cu). The MDS indicators can well replace all indicators to evaluate the topsoil quality in the study area. The overall soil quality of Tieling County showed a trend of low in the east and high in the west, and gradually increased from the hilly area to the plain area. The evaluation results are consistent with field research, which can provide reference for other topsoil quality evaluation, and it also provide a basis for the formulation of soil quality improvement measures.

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“…As the largest developing country in the world, China’s industry and economy have developed rapidly in the past 40 years. According to the national soil pollution survey bulletin, heavy metal pollution in agricultural soil in southern China is serious [ 12 , 13 ]. However, with the rapid development of industrial and agricultural activities, Hg emissions have also increased significantly [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Soil Heavy Metal Pollution and Health Risks in Different Functional Areas on the Northern Slope of the Eastern Tianshan Mountains in Xinjiang, NW China

Asaiduli

Abliz

Abulizi

et al. 2023

IJERPH

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In typical semi-arid areas, the timely and effective monitoring and evaluation of soil heavy metal pollution are of critical importance to prevent soil deterioration and achieve the sustainable use of soil resources. To further understand the degree of soil heavy metal pollution in different functional areas, we studied the soil heavy metal pollution on the northern slope of the eastern Tianshan Mountains in Xinjiang. We collected 104 surface soil samples from typical commercial (A), industrial (B), and agricultural (C) areas with different land-use patterns. The contents of Zn, Cu, Cr, Pb, As, and Hg in the soil of different functional areas were evaluated using the geo-accumulation index, the single-factor pollution index, and potential ecological risk. The results showed that the contents of Pb, As, and Hg in soils of different functional areas exceeded 4.47, 8.03, and 1.5 times the background values of Xinjiang soil, respectively. The average contents of Zn, Cu, and Cr were lower than the background values of Xinjiang soil. Except for As in different functional areas, the contents of the other elements in the different functional areas reached the level of soil environmental quality standards in China (GB15618-2018). The geo-accumulation index of heavy metals in different functional areas was in the order of Area C > Area A > Area B, indicating that Area C was the most polluted. The results of the single-factor pollution index showed that the pollution levels of Pb, As, and Hg were higher, and the pollution levels of Cr, Cu, and Zn were lower. The results of the potential ecological risk index showed that the northwest of Area A was higher, the southeast of Area B was more polluted, and the central and eastern parts of Area C were more polluted. From the perspective of spatial distribution, the spatial distribution characteristics of Zn and Cr elements in different functional areas are consistent, but the spatial distribution characteristics of Cu, Pb, As, and Hg in different functional areas are quite different. The high values of these four elements are mainly distributed in residential areas, factories, and metal smelters. It is necessary to divide the functional areas based on different land-use patterns, and the prevention of soil single-element and heavy metal pollution in different functional areas is reasonable for land resources and provides a scientific basis for the effective planning of quality assurance.

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Heavy Metal Pollution and Soil Quality Assessment under Different Land Uses in the Red Soil Region, Southern China

Cited by 12 publications

References 50 publications

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Soil health assessment of an acidic red soil agricultural area and its restoration with biochar soil conditioners

Soil Quality Evaluation Based on A Minimum Data Set (MDS)—A Case Study of Tieling County, Northeast China

Assessment of Soil Heavy Metal Pollution and Health Risks in Different Functional Areas on the Northern Slope of the Eastern Tianshan Mountains in Xinjiang, NW China

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