Spatial distribution of metals in smelter-impacted soils of woody habitats: Influence of landscape and soil properties, and risk for wildlife

Fritsch, Clémentine; Giraudoux, Patrick; Cœurdassier, Michaël; Douay, Francis; Raoul, Francis; Pruvot, Christelle; Waterlot, Christophe; Vaufleury, Annette de; Scheifler, Renaud

doi:10.1016/j.chemosphere.2010.06.075

Cited by 88 publications

(56 citation statements)

References 69 publications

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“…In the current study, HM availability was considered as the ratio of the DTPA-extractable concentration to the corresponding total concentration to characterize their toxicity. Pb availability in either bulk soil (12.7%) or rhizosphere soil (16.0%) was significantly lower compared with that of Zn ( Figure S2), suggesting the higher solubility of Zn than that of Pb in soils, which was consistent with the finding of Fritsch et al [45] in HM contaminated soils around mining area. However, it is interesting to note that the availability of Pb was significantly higher in bulk soil than that in rhizosphere soil at medium and high pollution levels, while a contrary tendency for Zn could be detected at medium pollution level ( Figure S2).…”

Section: Discussionsupporting

confidence: 81%

Comparisons of Soil Properties, Enzyme Activities and Microbial Communities in Heavy Metal Contaminated Bulk and Rhizosphere Soils of Robinia pseudoacacia L. in the Northern Foot of Qinling Mountain

Yang

Dong

Cao

et al. 2017

Forests

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Abstract:The toxic effects of heavy metal (HM) contamination on plant metabolism and soil microorganisms have been emphasized recently; however, little is known about the differences in soil physical, chemical, and biological properties between bulk and rhizosphere soils contaminated with HMs in forest ecosystem. The present study was conducted to evaluate the rhizosphere effect on soil properties, enzyme activities and bacterial communities associated with Robinia pseudoacacia L. along a HM contamination gradient. Soil organic matter (SOM), available nitrogen (AN) and phosphorus (AP) contents were significantly higher in rhizosphere soil than those in bulk soil at HM contaminated sites (p < 0.05). Compared to bulk soil, activities of four soil enzymes indicative of C cycle (β-glucosidase), N cycle (protease, urease) and P cycle (alkaline phosphatase) in rhizosphere soil across all study sites increased by 47.5%, 64.1%, 52.9% and 103.8%, respectively. Quantitative PCR (qPCR) and restriction fragment length polymorphism (RFLP) were used to determine the relative abundance, composition and diversity of bacteria in both bulk and rhizosphere soils, respectively. The copy number of bacterial 16S rRNA gene in bulk soil was significantly lower than that in rhizosphere soil (p < 0.05), and it had significantly negative correlations with total/DTPA-extractable Pb concentrations (p < 0.01). Alphaproteobacteria, Gammaproteobacteria and Firmicutes were the most dominant groups of bacteria at different study sites. The bacterial diversity index of Species richness (S) and Margalef (d Ma ) were significantly higher in rhizosphere soil compared with those in bulk soil, although no difference could be found in Simpson index (D) between bulk and rhizosphere soils (p > 0.05). Redundancy analysis (RDA) results showed that soil pH, EC, SOM and total/DTPA-extractable Pb concentrations were the most important variables affecting relative abundance, composition and diversity of bacteria (p < 0.05). Our study highlights the importance of rhizosphere effect on soil nutrient content, enzyme activity, bacterial abundance and community in HM contaminated forest soils. Further study is still required to understand the specific processes in the rhizosphere to achieve a suitable rhizosphere biotechnology for restoration of degraded forest ecosystem.

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Section: Discussionsupporting

confidence: 81%

Comparisons of Soil Properties, Enzyme Activities and Microbial Communities in Heavy Metal Contaminated Bulk and Rhizosphere Soils of Robinia pseudoacacia L. in the Northern Foot of Qinling Mountain

Yang

Dong

Cao

et al. 2017

Forests

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“…This is in contrast to an increase in pH within the basic pH range, which results in a greater extent of Cd adsorption on to soi1 particles with a subsequent reduction in plant uptake of Cd, Zn, and Pb (Kuo et al 1984). Douay et al (2009) andFritsch et al (2010) reported that the spatial distribution of extractable and total Cd levels in 262 soil samples over an area of 40 km 2 in Northern France greatly varied in accordance with soil pHand other soil properties. Because of the relationship between pH and Cd bioavailability, one strategy used for Cd phytoremediation has been to lower soil pH to enhance plant Cd uptake .…”

Section: Effect Of Soil Ph On CD Bioavailabilitymentioning

confidence: 83%

Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System

Shahid

Dumat

Khalid

et al. 2016

Reviews of Environmental Contamination and Toxicology

225

175

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This review summarizes the findings of the most recent studies, published from 2000 to 2016, which focus on the biogeochemical behavior of Cd in soil-plant systems and its impact on the ecosystem. For animals and people not subjected to a Cd-contaminated environment, consumption of Cd contaminated food (vegetables, cereals, pulses and legumes) is the main source of Cd exposure. As Cd does not have any known biological function, and can further cause serious deleterious effects both in plants and mammalian consumers, cycling of Cd within the soil-plant system is of high global relevance.The main source of Cd in soil is that which originates as emissions from various industrial processes. Within soil, Cd occurs in various chemical forms which differ greatly with respect to their lability and phytoavailability. Cadmium has a high phytoaccumulation index because of its low adsorption coefficient and high soil-plant mobility and thereby may enter the food chain. Plant uptake of Cd is believed to occur mainly via roots by specific and non-specific transporters of essential nutrients, as no Cd-specific transporter has yet been identified. Within plants, Cd causes phytotoxicity by decreasing nutrient uptake, inhibiting photosynthesis, plant growth and respiration, inducing lipid peroxidation and altering the antioxidant system and functioning of membranes. Plants tackle Cd toxicity via different defense strategies such as decreased Cd uptake or sequestration into vacuoles. In addition, various antioxidants combat Cd-induced overproduction of ROS. Other mechanisms involve the induction of phytochelatins, glutathione and salicylic acid.

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“…Unlike more complex dispersion models, the LUR approach does not typically consider factors controlling the deposition rate and direction from sources. Many studies reported that topography roughness, wind speed and direction influence atmospheric deposition, and thus the concentration of As or Pb in soil (Adriano, 2001;Fritsch et al, 2010).. The use of circular buffers to define geographic variables can result in patterns in the predicted surface that may not reflect actual distribution.…”

Section: Discussionmentioning

confidence: 99%

Modelling Arsenic and Lead Surface Soil Concentrations using Land Use Regression

Deschenes

Setton

Demers

et al. 2013

E3S Web of Conferences

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Abstract. Land Use Regression (LUR) models are increasingly used in environmental and exposure assessments to predict the concentration of contaminants in outdoor air. We explore the use of LUR as an alternative to more complex models to predict the concentration of metals in surface soil. Here, we used 55 soil samples of As and Pb collected in 1996 across British Columbia (BC), Canada by the Ministry of Environment. Predictor variables were derived for each sample site using Geographic Information System (GIS). For As (R 2 = 0.44), the resulting linear regression model includes the total length of roads (m) within 25 km, and bedrock geology. For the Pb model (R 2 =0.78), the predictor variables are the total surface area of industrial land use (m 2 ) within 5 km , the emissions of Pb (t) within 10 and 25 km, and the presence of closed mines within 50 km. The study proposes that LUR can reasonably predict the concentrations of As and Pb in surface soil over large areas.

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Spatial distribution of metals in smelter-impacted soils of woody habitats: Influence of landscape and soil properties, and risk for wildlife

Cited by 88 publications

References 69 publications

Comparisons of Soil Properties, Enzyme Activities and Microbial Communities in Heavy Metal Contaminated Bulk and Rhizosphere Soils of Robinia pseudoacacia L. in the Northern Foot of Qinling Mountain

Comparisons of Soil Properties, Enzyme Activities and Microbial Communities in Heavy Metal Contaminated Bulk and Rhizosphere Soils of Robinia pseudoacacia L. in the Northern Foot of Qinling Mountain

Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System

Modelling Arsenic and Lead Surface Soil Concentrations using Land Use Regression

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