Geochemical fractions of copper in soil chronosequences of selected European floodplains

Graf, M.; Lair, Georg J.; Zehetner, Franz; Gerzabek, Martin H.

doi:10.1016/j.envpol.2007.01.035

Cited by 38 publications

(22 citation statements)

References 16 publications

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“…High percentages of Cd in the residual phase may result from high pH of these soils. Nonetheless, Graf et al (2007) showed Cd to be mainly associated with weakly bound fractions in soils of the Danube and Ebro rivers.…”

Section: Cadmiummentioning

confidence: 96%

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Total concentrations and speciation of heavy metals in soils of the Shenyang Zhangshi Irrigation Area, China

Ratuzny

Gong

Wilke

2008

Environ Monit Assess

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The Shenyang Zhangshi Irrigation Area (SZIA) was used for the spreading of municipal and industrial waste water, which is an economic way of irrigating crops, recycling nutrients and water treatment. Long-term irrigation resulted in a severe metal contamination of soils. To identify the soil phases implicated in retaining the metals, sequential extractions were performed. The most predominant metal was cadmium which was mainly associated with mobile, easily soluble and easily reducible fractions. Copper was mainly associated with the residual, EDTA extractable and moderately reducible fractions. Lead was bound to organic matter and poorly crystalline Fe-oxides. Nickel and zinc were mainly associated with the residual and strongly reducible fractions. Although copper, lead, nickel and zinc concentrations were of minor importance mobile metal concentrations of these metals as well as of cadmium exceeded German trigger values for plant production and plant growth.

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Section: Cadmiummentioning

confidence: 96%

“…Low Cu percentages in the mobile and easily soluble fractions point to the fact that Cu contamination has lasted for longer periods. According to Graf et al (2007) freshly added Cu was mainly retained in mobile and easily extractable fractions in acid soils.…”

Section: Coppermentioning

confidence: 99%

Total concentrations and speciation of heavy metals in soils of the Shenyang Zhangshi Irrigation Area, China

Ratuzny

Gong

Wilke

2008

Environ Monit Assess

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“…3), reflects the average sedimentation conditions with texture becoming finer with decreasing stream energy (Nanson and Croke, 1992). The TOC contents are within the range found in floodplain sediments of other large rivers in Europe (Graf et al, 2007;Pies et al, 2007). The low C/N ratios and high available P contents (Morel et al, 1992) indicate high nutrient availability in all FPZs, which is characteristic of many river floodplains (Tockner and Stanford, 2002).…”

Section: Soil Properties Environmental Conditions and Degree Of Distmentioning

confidence: 98%

Heterogeneity of soil carbon pools and fluxes in a channelized and a restored floodplain section (Thur River, Switzerland)

Samaritani

Shrestha

Fournier

et al. 2011

Hydrol. Earth Syst. Sci.

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Abstract. Due to their spatial complexity and dynamic nature, floodplains provide a wide range of ecosystem functions. However, because of flow regulation, many riverine floodplains have lost their characteristic heterogeneity. Restoration of floodplain habitats and the rehabilitation of key ecosystem functions, many of them linked to organic carbon (C) dynamics in riparian soils, has therefore become a major goal of environmental policy. The fundamental understanding of the factors that drive the processes involved in C cycling in heterogeneous and dynamic systems such as floodplains is however only fragmentary.We quantified soil organic C pools (microbial C and water extractable organic C) and fluxes (soil respiration and net methane production) in functional process zones of adjacent channelized and widened sections of the Thur River, NE Switzerland, on a seasonal basis. The objective was to assess how spatial heterogeneity and temporal variability of these pools and fluxes relate to physicochemical soil properties on one hand, and to soil environmental conditions and flood disturbance on the other hand.Correspondence to: J. Luster (joerg.luster@wsl.ch) Overall, factors related to seasonality and flooding (temperature, water content, organic matter input) affected soil C dynamics more than soil properties did. Coarse-textured soils on gravel bars in the restored section were characterized by low base-levels of organic C pools due to low TOC contents. However, frequent disturbance by flood pulses led to high heterogeneity with temporarily and locally increased C pools and soil respiration. By contrast, in stable riparian forests, the finer texture of the soils and corresponding higher TOC contents and water retention capacity led to high baselevels of C pools. Spatial heterogeneity was low, but major floods and seasonal differences in temperature had additional impacts on both pools and fluxes. Soil properties and base levels of C pools in the dam foreland of the channelized section were similar to the gravel bars of the restored section. By contrast, spatial heterogeneity, seasonal effects and flood disturbance were similar to the forests, except for indications of high CH 4 production that are explained by long travel times of infiltrating water favoring reducing conditions. Overall, the restored section exhibited both a larger range and a higher heterogeneity of organic C pools and fluxes as well as a higher plant biodiversity than the channelized section. This suggests that restoration has indeed led to an increase in functional diversity.

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“…This revealed important new dynamics of pollutant transgression of contaminants such as cyclo-β-hexachlorohexane, a derivative of the herbicide lindane. At the same site, depth-specific soil water samples were collected for the determination of pollutant flux and transformations of organic and inorganic pollutants on the passage from soils via groundwater to surface water (Baborowski et al, 2007;Graf et al, 2007;Hsu et al, 2007). In the Bitterfeld region, other specific investigations of pollutant transfer on the passage from ground-to surface water were combined with piezometric and temperature measurements and an integral pumping test as well as isotope analyses to reveal only minor pollutant input through groundwater (Petelet-Giraud et al, 2007; Schmidt et al, 2006).…”

Section: Objectives Of the Work And General Achievementsmentioning

confidence: 99%

Mobility, Turnover and Storage of Pollutants in Soils, Sediments and Waters: Achievements and Results of the EU Project AquaTerra - A Review

Barth¹,

Grathwohl²,

Fowler³

et al. 2009

Sustainable Agriculture

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-AquaTerra is one of the first environmental projects within the 6th Framework program by the European Commission. It began in June 2004 with a multidisciplinary team of 45 partner organizations from 13 EU countries, Switzerland, Serbia, Romania and Montenegro. Results from sampling and modeling in 4 large river basins (Ebro, Danube, Elbe and Meuse) and one catchment of the Brévilles Spring in France led to new evaluations of diffuse and hotspot input of persistent organic and metal pollutants including dynamics of pesticides and polycyclic aromatic hydrocarbons, as well as metal turnover and accumulation. While degradation of selected organic compounds could be demonstrated under controlled conditions in the laboratory, turnover of most persistent pollutants in the field seems to range from decades to centuries. First investigations of long-term cumulative and degradation effects, particularly in the context of climate change, have shown that it is also necessary to consider the predictions of more than one climate model when trying to assess future impacts. This is largely controlled by uncertainties in climate model responses. It is becoming evident, however, that changes to the climate will have important impacts on the diffusion and degradation of pollutants in space and time that are just at the start of their exploration.contaminants / organic / inorganic / European river basins / climate change / sorption / biodegradation / soil / sediment / ground-and surface water / heavy metals / review / pesticides / atrazine / isoproturon / alkyphenol / acetochlor / chlortoluron / organochlorine / Br diphenyl ethers / drugs / TOF mass spectrometry / 87Sr * Corresponding author: johannes.barth@uni-tuebingen.de 2 J.A.C. Barth et al.

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Geochemical fractions of copper in soil chronosequences of selected European floodplains

Cited by 38 publications

References 16 publications

Total concentrations and speciation of heavy metals in soils of the Shenyang Zhangshi Irrigation Area, China

Total concentrations and speciation of heavy metals in soils of the Shenyang Zhangshi Irrigation Area, China

Heterogeneity of soil carbon pools and fluxes in a channelized and a restored floodplain section (Thur River, Switzerland)

Mobility, Turnover and Storage of Pollutants in Soils, Sediments and Waters: Achievements and Results of the EU Project AquaTerra - A Review

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