Spatiotemporal modeling of soil heavy metals and early warnings from scenarios-based prediction

He, Mengting; Yan, Peng; Yu, Haodan; Yang, Shiyan; Xu, Jianming; Liu, Xingmei

doi:10.1016/j.chemosphere.2020.126908

Cited by 25 publications

(11 citation statements)

References 44 publications

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“…By coupling the results of the niche model, soil Cd pollution, and mine impact analysis, the priority areas for L. chuanxiong were identified to infer the best areas for L. chuanxiong under current climate conditions. To further explore the spatial dynamic changes in priority zones for L. chuanxiong caused by a series of processes, we developed a climate niche model and a spatiotemporal scenario prediction model for soil heavy metals to simulate this change (Wu, 2008;He et al, 2020;Tang et al, 2021;Hou et al, 2022). The specific methods included the following steps: (1) performing MaxEnt modeling to evaluate habitat suitability for L. chuanxiong; (2) planning priority areas of L. chuanxiong on the basis of the MaxEnt model, soil Cd pollution, and mine impact analysis; and (3) analyzing the changes in planned areas using climate niche and spatiotemporal scenario prediction models (Figure 2)…”

Section: Methodology Overviewmentioning

confidence: 99%

“…In our study, first, a simulation model for soil pollution by heavy metals was established to predict future pollution conditions within the study zones ( Wu, 2008 ; He et al., 2020 ; Hou et al., 2022 ). Soil heavy metal accumulation prediction models are based on the law of mass conservation, and the accumulation and purification of heavy metal pollutants in the soil are in a dynamic equilibrium when potentially toxic elements enter the soil ( He et al., 2020 ; Zhang J. et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

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Priority planting area planning for cash crops under heavy metal pollution and climate change: A case study of Ligusticum chuanxiong Hort

Li²,

Huo³

et al. 2023

Front. Plant Sci.

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IntroductionSoil pollution by heavy metals and climate change pose substantial threats to the habitat suitability of cash crops. Discussing the suitability of cash crops in this context is necessary for the conservation and management of species. We developed a comprehensive evaluation system that is universally applicable to all plants stressed by heavy metal pollution.MethodsThe MaxEnt model was used to simulate the spatial distribution of Ligusticum chuanxiong Hort within the study area (Sichuan, Shaanxi, and Chongqing) based on current and future climate conditions (RCP2.6, RCP4.5, RCP6.0, and RCP8.5 scenarios). We established the current Cd pollution status in the study area using kriging interpolation and kernel density. Additionally, the three scenarios were used in prediction models to simulate future Cd pollution conditions based on current Cd pollution data. The current and future priority planting areas for L. chuanxiong were determined by overlay analysis, and two levels of results were obtained.ResultsThe results revealed that the current first- and secondary-priority planting areas for L. chuanxiong were 2.06 ×103 km2 and 1.64 ×104 km2, respectively. Of these areas, the seven primary and twelve secondary counties for current L. chuanxiong cultivation should be given higher priority; these areas include Meishan, Qionglai, Pujiang, and other regions. Furthermore, all the priority zones based on the current and future scenarios were mainly concentrated on the Chengdu Plain, southeastern Sichuan and northern Chongqing. Future planning results indicated that Renshou, Pingwu, Meishan, Qionglai, Pengshan, and other regions are very important for L. chuanxiong planting, and a pessimistic scenario will negatively impact this potential planting. The spatial dynamics of priority areas in 2050 and 2070 clearly fluctuated under different prediction scenarios and were mainly distributed in northern Sichuan and western Chongqing.DiscussionGiven these results, taking reasonable measures to replan and manage these areas is necessary. This study provides. not only a useful reference for the protection and cultivation of L. chuanxiong, but also a framework for analyzing other cash crops.

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Section: Methodology Overviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Priority planting area planning for cash crops under heavy metal pollution and climate change: A case study of Ligusticum chuanxiong Hort

Li²,

Huo³

et al. 2023

Front. Plant Sci.

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“…To quantify the change dynamics of soil Cd pollution, we utilized three scenario prediction models to calculate the content of soil Cd for some time in the future, including the optimistic scenario, default scenario, and pessimistic scenario (He et al, 2020;Wu, 2008;). The optimistic scenario represents that for an extended period, no heavy metal ions will enter the pedosphere after the discharge of heavy metal emissions from factories, enterprises, transportation, and residential sewage has been processed.…”

Section: Spatial Dynamic Changes In Priority Planting Areas Of L Chua...mentioning

confidence: 99%

Priority planting area planning for L. chuanxiong under soil Cd pollution and climate change

Huo²,

Meng³

et al. 2022

Preprint

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Aims Soil cadmium (Cd) pollution poses substantial threats to cash crops and humans. For decades, L. chuanxiong has been under Cd stress due to natural and human activities, including the soil-forming process. As such, how to plan priority planting areas impacted by soil Cd pollution and explore the future spatial dynamics of planned areas is critical. Methods We developed a comprehensive evaluation system that is universally applicable to all plants stressed by heavy metal pollution by simulating the current and future niche of L. chuanxiong and establishing a scenario simulation model for soil Cd pollution. Results The results revealed that the current first- and secondary-priority planting areas for L. chuanxiong were 2.06 ×103 km2 and 1.64 ×104 km2, respectively. Of these areas, the seven first and twelve secondary counties for current L. chuanxiong cultivation should have higher priorities; these areas include Meishan, Qionglai, Pujiang, and other regions. Additionally, all the priority zones under the current and future scenarios are mainly concentrated in the Chengdu Plain, southeast Sichuan, and northern Chongqing. Future planning results indicate that Renshou, Pingwu, Meishan, Qionglai, Pengshan, and other regions are very important for L. chuanxiong planting, and a pessimistic scenario will negatively impact it. The spatial dynamics of priority areas in 2050 and 2070 clearly fluctuate under different prediction scenarios and are mainly distributed in northern Sichuan and western Chongqing. Conclusions Given these results, taking reasonable measures to manage the planned areas is necessary. This study not only provides a useful reference for the protection and cultivation of L. chuanxiong but also provides a paradigm for other cash crops.

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“…are being introduced into the soil system through directly discharged to contain more than the allowable standard contaminant concentrations (Wang et al 2020;Rybak et al 2018;Feng et al 2018). HMs have ranked the rst among all soil contaminant types due to their high toxicity, bioaccumulation, persistence and mobility in soils (He et al 2020;Yang et al 2020). These HMs (Pb, Cr, Cd, Hg, As, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Pb is a commonly recognized carcinogen and led to neurotoxicity, stomach and lung lesions; Cr(VI) is a strong oxidant and also act as carcinogenic and teratogenic characteristics, and both of them have been listed as priority monitoring and control pollutants (Hu et al 2020). Excess of Pb and Cr in soil is mainly derived from intensifying anthropogenic activities including mining, sewage irrigation, and pesticide abuse (He et al 2020), which could lead to a deterioration in various functions and stability of soil systems (Duan et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Passivation and remediation of Pb and Cr in contaminated soil by sewage sludge biochar tubule

Chen

et al. 2021

Environ Sci Pollut Res

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Currently, numerous studies have carried out to research the effect of biochars remediation soil heavy metals (HMs) contaminated, but there have been fewer explorations of the effect of biochars tubule on soil HMs remediation. This work aimed was to study the effect of passivation and remediation of lead (Pb) and chromium (Cr) contaminated soil after insert sewage sludge biochar (SSB) tubule. The results showed that the high risky fractions of Pb and Cr could be transformed into more stable fractions, also, Pb and Cr total contents are signi cantly decreased by SSB tubule. The mechanisms including adsorption, ion exchange, complexation and precipitation which are concluded from the characteristic analysis. Detailly, the passivation of Pb and Cr are better when the moisture at 25% and 35%, respectively, [Pb: exchangeable (F1), carbonate bound (F2) decreased by 25.1%, 16.8%, Fe-Mn oxides bound (F3) increased by 18.5%; Cr: F1 decreased by 73.0%, F2, F3, Organic matter bound (F4) increased by 13.2%, 23.9%, 30.8%), respectively]. The remediation of Pb and Cr is better when the moisture at 25% and 35%, respectively, (Pb: decreased by 23.3%; Cr: decreased by 38.4%, respectively). The ndings showed that the SSB tubule is effective when used for soil HMs contaminated.

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Spatiotemporal modeling of soil heavy metals and early warnings from scenarios-based prediction

Cited by 25 publications

References 44 publications

Priority planting area planning for cash crops under heavy metal pollution and climate change: A case study of Ligusticum chuanxiong Hort

Priority planting area planning for cash crops under heavy metal pollution and climate change: A case study of Ligusticum chuanxiong Hort

Priority planting area planning for L. chuanxiong under soil Cd pollution and climate change

Passivation and remediation of Pb and Cr in contaminated soil by sewage sludge biochar tubule

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