Progress in Dust Modelling, Global Dust Budgets, and Soil Organic Carbon Dynamics

Chen, Weixiao; Meng, Huan; Song, Hongquan; Zheng, Hui

doi:10.3390/land11020176

Cited by 28 publications

(19 citation statements)

References 143 publications

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“…Therefore, atmospheric deposition may be attributed to the main source for Pb, Cd, As, and Zn contamination in the soil near the smelter. In addition, the distribution of Pb, Cd, As, and Zn in the study area is oval from northeast to southwest, which is consistent with the local dominant wind direction (southwest wind) [ 41 , 42 ].…”

Section: Resultsmentioning

confidence: 53%

Metal(loid)s Spatial Distribution, Accumulation, and Potential Health Risk Assessment in Soil-Wheat Systems near a Pb/Zn Smelter in Henan Province, Central China

Liu

Ren

et al. 2022

IJERPH

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To understand the influence of Pb/Zn smelter on surrounding environment, 110 soil and 62 wheat grain samples (62 paired samples) were collected nearby a Pb/Zn smelter in Jiaozuo City, Henan Province, China. The content and spatial distribution of metal(loid)s in the soil-wheat system, and the potential health risk via consumption of wheat grains were determined. Results showed that the average content of Pb, Cd, As, Cu, Zn, and Ni in soil were 129.16, 4.28, 17.95, 20.43, 79.36, and 9.42 mg/kg, respectively. The content of Cd in almost all soil samples (99.1%) exceeded the national limitation of China (0.6 mg/kg). Spatial distribution analysis indicated that atmospheric deposition might be the main pollution source of Pb, Cd, As, and Zn in soil. In addition, the average content of Pb, Cd, As, Cu, Zn, and Ni in wheat grain were 0.62, 0.35, 0.10, 3.7, 35.77, and 0.15 mg/kg, respectively, with the average Pb and Cd content exceeding the national limitation of China. The average bioaccumulation factor of these metal(loid)s followed the following order: Zn (0.507) > Cu (0.239) > Cd (0.134) > Ni (0.024) > Pb (0.007) > As (0.006). Health risk assessment indicated that the average noncarcinogenic risk of children (6.78) was much higher than that of adults (2.83), and the carcinogenic risk of almost all wheat grain is higher than the acceptable range, with an average value of 2.43 × 10−2. These results indicated that humans who regularly consume these wheat grains might have a serious risk of noncarcinogenic and carcinogenic diseases.

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Section: Resultsmentioning

confidence: 53%

Metal(loid)s Spatial Distribution, Accumulation, and Potential Health Risk Assessment in Soil-Wheat Systems near a Pb/Zn Smelter in Henan Province, Central China

Liu

Ren

et al. 2022

IJERPH

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“…Along the northern slope of the Kunlun Mountains, there are extensive loess deposits on varying geomorphic surfaces (e.g., terraces and foothills) between 2,000 and 4,500 m asl (Fang et al, 2002). Because of the southward bending of the eastward-aligned Kunlun Mountains, low-level meridional air flows over the Tarim Basin converge at the apex from Hetian to Yutian, resulting in frequent dust storms and accumulation of airborne fine particles up to 200 m thick on the mountains in this area (Figure 1) (Han et al, 2006;Liu et al, 2010;Zan et al, 2010;Chen et al, 2022). This process commenced probably a million years ago, and continued throughout the Holocene to the present day (Gao, 2004;Yang et al, 2021).…”

Section: Physical Geography Of the Study Areamentioning

confidence: 98%

Charcoal in Kunlun Mountains loess: Implications for environment change and human activity during the middle Holocene

Pan

Gao

et al. 2023

Front. Earth Sci.

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Loess sediment charcoal records are used in paleoecological analyses to reconstruct fire history and human activities. The Tarim Basin is bordered to the south by the Kunlun Mountains, where eolian silt or loess is extensive and has continued to be deposited in modern times. In this study, we conducted multiple analyses of a 720 cm–thick loess section (KLA) at 3,516 m elevation in the Kunlun Mountains to reconstruct the middle Holocene vegetation history in northern China. Our palynological, charcoal, and grain-size data reveal a slightly drying trend with notable moisture fluctuations in the Kunlun highland since ∼4.9 kyr (1 kyr = 1,000 cal yr BP). At approximately 4.1, 2.0, and 1.0 kyr, the climate became more arid; the intervals of 4.0–3.2, 2.4–1.9 and 0.7–0.5 kyr were relatively wet periods. Some sand activity phases in the southern margin of the Taklimakan Desert are recorded around 4.0–3.5, 2.5–2.3, and 1.2–0.7 kyr. Stronger human activities commenced at approximately 2.0 kyr. On the basis of sedimentary charcoal concentrations and regional paleoclimatic and archaeological records, we propose that micro charcoal (<50 μm) originated from the Tarim Basin, reflecting human activity in the basin. Macro charcoal (>50 μm) is suitable for reconstructing Kunlun highland fire events. We suggest that increased anthropogenic activities such as agriculture, construction, and wars played an important role in land degradation and abandonment of ancient cities in the southern Tarim Basin. Our results provide new insights into the role of humans in the ecological evolution of inland arid areas in China during the middle Holocene.

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“…Wind-driven soil erosion is a meteorological event that occurs when soil or soil parent material is lifted into the air by air currents, which transport it long distances before it is deposited back to the surface [1,2]. Wind erosion produces a large amount of airborne dust particles [3,4], forming around 1~3 billion tons of dust aerosol per year, which is about 30-50% of the total global aerosol mass [5,6]. Dust aerosol has a significant impact on human health, air quality, ecology, and the climate [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Large quantities of organic carbon are lost from the soil through wind erosion. Soil organic carbon (SOC) plays a key role in regulating the global carbon cycle and climate change [3,12,13]. Small changes in soil organic carbon stocks can lead to large changes in atmospheric carbon dioxide (CO 2 ) concentrations [3,14].…”

Section: Introductionmentioning

confidence: 99%

“…Soil organic carbon (SOC) plays a key role in regulating the global carbon cycle and climate change [3,12,13]. Small changes in soil organic carbon stocks can lead to large changes in atmospheric carbon dioxide (CO 2 ) concentrations [3,14]. As the most erodible organic carbon source that is subject to disturbance from human activities, estimating wind dust emissions and organic carbon loss from agricultural land is extremely important to any analysis of human responses to the greenhouse effect and land degradation [15].…”

Section: Introductionmentioning

confidence: 99%

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Estimates of Dust Emissions and Organic Carbon Losses Induced by Wind Erosion in Farmland Worldwide from 2017 to 2021

Liu

Zhao

et al. 2023

Agriculture

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Wind erosion can cause high dust emissions from agricultural land and can lead to a significant loss of carbon and nutrients from the soil. The carbon balance of farmland soil is an integral part of the carbon cycle, especially under the current drive to develop carbon-neutral practices. However, the amount of global carbon lost due to the wind erosion of farmland is unknown. In this study, global farmland dust emissions were estimated from a dust emission inventory (0.1° × 0.1°, daily) built using the improved Community Multiscale Air Quality Modeling System–FENGSHA (CMAQ-FENGSHA), and global farmland organic carbon losses were estimated by combining this with global soil organic carbon concentration data. The average global annual dust emissions from agricultural land from 2017 to 2021 were 1.75 × 109 g/s. Global dust emissions from agricultural land are concentrated in the UK, Ukraine, and Russia in Europe; in southern Canada and the central US in North America; in the area around Buenos Aires, the capital of Argentina, in South America; and in northeast China in Asia. The global average annual organic carbon loss from agricultural land was 2970 Gg for 2017–2021. The spatial distribution of emissions is roughly consistent with that of dust emissions, which are mainly concentrated in the world’s four major black soil regions. These estimates of dust and organic carbon losses from agricultural land are essential references that can inform the global responses to the carbon cycle, dust emissions, and black soil conservation.

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Progress in Dust Modelling, Global Dust Budgets, and Soil Organic Carbon Dynamics

Cited by 28 publications

References 143 publications

Metal(loid)s Spatial Distribution, Accumulation, and Potential Health Risk Assessment in Soil-Wheat Systems near a Pb/Zn Smelter in Henan Province, Central China

Metal(loid)s Spatial Distribution, Accumulation, and Potential Health Risk Assessment in Soil-Wheat Systems near a Pb/Zn Smelter in Henan Province, Central China

Charcoal in Kunlun Mountains loess: Implications for environment change and human activity during the middle Holocene

Estimates of Dust Emissions and Organic Carbon Losses Induced by Wind Erosion in Farmland Worldwide from 2017 to 2021

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