Identification of the co-existence of low total organic carbon contents and low pH values in agricultural soil in north-central Europe using hot spot analysis based on GEMAS project data

Xu, Haofan; Demetriades, Alecos; Reimann, Clemens; Jiménez, Juan J.; Filser, Juliane; Zhang, Chaosheng

doi:10.1016/j.scitotenv.2019.04.382

Cited by 46 publications

(19 citation statements)

References 75 publications

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“…However, the OECD artificial soil largely employed in laboratory testing with soil organisms does not resemble typical field conditions, since agricultural soil diverge from the laboratory test substrate by content and quality of organic matter or pH values. The specific combination of high peat, high fine sand and high clay content is very unlikely in the field (please see figures below; and EFSA scientific report, 2010b; Xu et al., 2019). In addition, the OECD artificial soil is not a worst case regarding the availability of the test compound for organisms, independently whether organic or inorganic substances are investigated.…”

Section: Environmental Risk Assessmentmentioning

confidence: 99%

Statement of the PPR Panel on a framework for conducting the environmental exposure and risk assessment for transition metals when used as active substances in plant protection products (PPP)

Residues¹,

Hernández‐Jerez²,

Adriaanse³

et al. 2021

EFS2

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The European Commission asked the European Food Safety Authority (EFSA) to prepare a statement on a framework for the environmental risk assessment (ERA) of transition metals (e.g. iron and copper) used as active substances in plant protection products (PPPs). Non-degradability, essentiality and specific conditions affecting fate and behaviour as well as their toxicity are distinctive characteristics possibly not covered in current guidance for PPPs. The proposed risk assessment framework starts with a preliminary phase, in which monitoring data on transition metals in relevant environmental compartments are provided. They deliver the metal natural background and anthropogenic residue levels to be considered in the exposure calculations. A first assessment step is then performed assuming fully bioavailable residues. Should the first step fail, refined ERA can, in principle, consider bioavailability issues; however, non-equilibrium conditions need to be taken into account. Simple models that are fit for purpose should be employed in order to avoid unnecessary complexity. Exposure models and scenarios would need to be adapted to address environmental processes and parameters relevant to the fate and behaviour of transition metals in water, sediment and soils (e.g. speciation). All developments should follow current EFSA guidance documents. If refined approaches have been used in the risk assessment of PPPs containing metals, post-registration monitoring and controlled long-term studies should be conducted and assessed. Utilisation of the same transition metal in other PPPs or for other uses will lead to accumulation in environmental compartments acting as sinks. In general, it has to be considered that the prospective risk assessment of metal-containing PPPs can only cover a defined period as there are limitations in the long-term hazard assessment due to issues of non-degradability. It is therefore recommended to consider these aspects in any risk management decisions and to align the ERA with the goals of other overarching legislative frameworks.

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Section: Environmental Risk Assessmentmentioning

confidence: 99%

Statement of the PPR Panel on a framework for conducting the environmental exposure and risk assessment for transition metals when used as active substances in plant protection products (PPP)

Residues¹,

Hernández‐Jerez²,

Adriaanse³

et al. 2021

EFS2

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“…The large amount of precipitation with low pH values was an important factor that influenced soil pH. Recent syntheses suggest that precipitation also influenced the response of soil pH [44] and acid deposition decreased soil pH [50][51][52]. The monthly average pH values of precipitation each month during 2013 to 2017 in Jiangxi province are summarized in Figure 8.…”

Section: Relationships Of Soil Ph Change With N-fertilizer Inputs And...mentioning

confidence: 99%

Assessing Soil Acidification of Croplands in the Poyang Lake Basin of China from 2012 to 2018

et al. 2020

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Soil acidification, caused by intensified fertilizer application and acid deposition, has threatened the sustainability of agricultural ecosystems and soil quality in parts of China since the 1980s. However, little is known about the spatio-temporal change of soil pH in cropland at a large basin scale. Poyang Lake Basin of China was selected as the study area to identify the spatio-temporal change of cropland pH and detect potential soil acidification factors. A total of 507 and 503 topsoil samples were collected in 2012 and 2018, respectively, and methods including one-way analysis of variance (ANOVA), Pearson’s correlation analyses, and Inverse Distance Weighted (IDW) were applied. Results showed that soil pH ranged from 3.96 to 7.95 in 2012 and from 3.34 to 8.19 in 2018, with most samples being acidic (pH < 7) in both sets of data. The two soil datasets showed a significant decline (p < 0.05) of 0.1 pH units over the past six years and several soil samples that exhibited obvious uptrends in the groups of pH < 4.5 and 4.5–5.0 from 2012 to 2018. Overall, the distribution patterns of pH at the two sampling dates were similar, whereas local details of the pH spatial distribution patterns differed. While we found a significant correlation (p < 0.05) between soil pH and aspect, elevation and slope showed no significant correlation with pH. ANOVA showed that pH values in the water density (river or lake network density) range of 6.27–19.94 were significantly higher (p < 0.05) than the other water densities. Large amounts of precipitation with low pH values were found to significantly influence soil pH, whereas N-fertilizer inputs exerted limited effects on soil pH over the entire study area. These findings provided new insights on soil acidification assessment and potential factor detection at the basin scale.

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“…Ganeshamurthy (1998) [54] found that the increased amounts of organic C and total N from earthworm castings may be the result of selective feeding behavior and repeated feeding on the castings, while the increased amounts of extractable P in casts could be a result of the increased enzymatic activity. The contribution of earthworms on phosphorus cycle is essential, because in soil P is mainly bound by the solid phase of it [65] and not always its release in soil solution is satisfactory for plants requirements. Considering the decreasing reserves of P in soils, becomes important to valuate this nutrient through earthworm casting activity.…”

Section: And 82)mentioning

confidence: 99%

Earthworms Diversity (Oligochaeta: Lumbricidae) and Casting Chemical Composition in an Urban Park from Western Romania

Iordache¹,

Tudor²,

Brei³

2020

Pol. J. Environ. Stud.

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This paper aimed to establish the species diversity of earthworms (Oligochaeta: Lumbricidae) and the chemical composition of earthworm surface castings within an urban park from west side of Romania (Timişoara City): Plevnei Park (45°44'58''N, 21°13'38''E). Eight lumbricid earthworm species have been identified: Lumbricus terrestris, Aporrectodea rosea, Aporrectodea longa, Aporrectodea caliginosa, Allolobophora chlorotica, Dendrobaena veneta, Dendrobaena octaedra, Dendrodrilus rubidus. Based on species incidence, several ecological indicators have been calculated: the constancy of earthworm species in the sampling areas, the Sørensen similarity of sampling points as species composition, and the Jaccard similarity (coenotic affinity) of the earthworm species within the sampled points. The surface castings have been analyzed for the following physical-chemical parameters: pH, total organic carbon (TOC), total nitrogen (N), plant available phosphorus (P), plant available potassium (K), and calcium water soluble (Ca). Because it is not yet clearly elucidated the casting behavior (surface or subsurface) of earthworms, and their feeding behavior, habitat behavior and casting behavior are not always clearly separated traits, and because until now it is insufficiently known how the environmental conditions affect the surface or subsurface casts production in earthworms, or how these conditions determine more than a single casting behavior for one species, there had been difficult to conclude which of the found species is responsible for the surface casting within the studied urban park. To find possible correlations existing between the physical-chemical parameters of the earthworm castings, Pearson, Spearman, and Kendall correlations (p<0.05) were calculated. The study revealed significant

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Identification of the co-existence of low total organic carbon contents and low pH values in agricultural soil in north-central Europe using hot spot analysis based on GEMAS project data

Cited by 46 publications

References 75 publications

Statement of the PPR Panel on a framework for conducting the environmental exposure and risk assessment for transition metals when used as active substances in plant protection products (PPP)

Statement of the PPR Panel on a framework for conducting the environmental exposure and risk assessment for transition metals when used as active substances in plant protection products (PPP)

Assessing Soil Acidification of Croplands in the Poyang Lake Basin of China from 2012 to 2018

Earthworms Diversity (Oligochaeta: Lumbricidae) and Casting Chemical Composition in an Urban Park from Western Romania

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