Effect of decomposing litter on the mobility and availability of metals in the soil of a recently created floodplain

Laing, Gijs Du; Bontinck, A.; Samson, Roeland; Vandecasteele, Bart; Vanthuyne, Dieter; Meers, Erik; Lesage, Els; Tack, Filip; Verloo, Marc

doi:10.1016/j.geoderma.2008.07.004

Cited by 22 publications

(13 citation statements)

References 37 publications

(53 reference statements)

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“…Moreover, we confirmed the role of the soil texture (Du Laing et al 2002, 2009c, hydrological regime (Du Laing et al 2007c), salinity (Du Laing et al 2002, 2008c and litter supply (Du Laing et al 2008a in changing the mobility and availability of metals in the superficial soil layer. However, the variation of metal mobility with sampling depth as a function of water table level has not yet been identified.…”

supporting

confidence: 72%

Effect of Water Table Level on Metal Mobility at Different Depths in Wetland Soils of the Scheldt Estuary (Belgium)

Laing

Meers

Dewispelaere

et al. 2009

Water Air Soil Pollut

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An experiment was set up to assess the factors affecting metal mobility in five wetland soils of the Scheldt estuary at different sampling depths when subjecting the soils to various water table levels. Pore water metal concentrations were monitored for 10 months at four sampling depths (10, 30, 60 and 90 cm) upon adjusting the water table level to 0, 40 and 80 cm below the surface of the soils. Nickel (Ni) release is facilitated by reductive conditions. These reductive conditions mainly occur below the water table. The fate of chromium (Cr) under reductive conditions seems to be promoted by the presence of dissolved organic matter. However, Cr fate seems to be inconsistent between the soils, as it is affected by a series of counteracting mechanisms. Copper (Cu), zinc (Zn) and especially cadmium (Cd) are all primarily released above the water table under high salinity conditions. These elements are also released below or just above the water table when organic matter is being decomposed, resulting in calcium (Ca), manganese (Mn), Ni and/or iron (Fe) release upon CO 2 accumulation and Fe/Mn oxide reduction, without being accompanied by sulphide production. Their mobility is low under reducing conditions, i.e. in the presence of sulphides, whereas the complexation by soluble organic matter especially seems to promote Cu mobility.

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supporting

confidence: 72%

Effect of Water Table Level on Metal Mobility at Different Depths in Wetland Soils of the Scheldt Estuary (Belgium)

Laing

Meers

Dewispelaere

et al. 2009

Water Air Soil Pollut

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“…Furthermore, mineralization of organic matter in used organic amendments leads to an interesting release of nutrients for plants, in particular nitrogen. In amended soils, the kinetics of mineralization depends on soil texture, moisture regime and the kind of added organic matter (Du Laing et al 2008). Hargreaves et al (2008) reported that compost organic nitrogen mineralization dependents on several factors including C/N ratio of raw material, composting conditions, compost maturity, time of amendment, and compost quality.…”

Section: Nitrogen a Phosphorus And Potassium Content In Alfalfa Leavesmentioning

confidence: 99%

Effect of date palm waste compost on forage alfalfa growth, yield, seed yield and minerals uptake

Benabderrahim

Elfalleh

Belayadi

et al. 2017

Int J Recycl Org Waste Agricult

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Purpose Date palm (Phoenix dactylifera L.) is one of the predominant fruit trees grown in oases ecosystems (Southern Mediterranean regions) and produces several wastes during practicing cultivation since fruit and bunch thinning is frequently applied. Yet, the valorization of date palm wastes as bioresources has received little attention. The main objective for the present research is to assess palm trees compost (P-compost) as organic fertilizer for alfalfa (Medicago sativa L.). Methods The experiment was carried out in an experimental field involving four replicates and three soil amendment treatments (1) control, conventional mineral fertilizer diammonium phosphate, (2) 30 t ha -1 of cow manure, and (3) 30 t ha -1 of palm tree compost (P-compost). Plots were planted on with alfalfa and the measurements of studied traits (growth, yield, seed yield and minerals uptake) were determined for two crop seasons (2010 and 2011). Results Compared with untreated soil, the palm compost application at 30 t ha -1 improved significantly both organic matter and water retention capacity of the soil and decreased the electrical conductivity (-70%).Furthermore, palm compost supply significantly increased fresh biomass production of alfalfa by 21 and 28%, respectively, during the first and second seasons. Also, it enhanced the grain yield and growth rate (stem length and leafs expansion) of this species. At the first crop season, the palm compost application had a positive impact on minerals nutrition compared to the control treatment, with improving rates of ? 32% for phosphorus, ? 25% for potassium and ? 6% for nitrogen. In addition, these contents were higher than in plants grown under cow manure amendment. However, at the second season, the palm compost improved only P and N contents. Conclusions This preliminary finding suggests that palm compost at moderate dose (30 t ha -1 ) could be highly beneficial for forage plant yield.

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“…Nevertheless, abundant leaf fall creates the main substrate for organic matter production on the floodplain, affecting metal mobility and availability. It is suspected, however, that depending on the type of litter composition, it initially induces increases of metal concentrations, which may be exported from the flooded soil in the period followed by metal readsorption (Du Laing et al 2008). Organic matter degradation is a process consuming much of the soil oxygen leading to reducible or strongly reducible conditions, which are permanent in submerged soils with low degradation rates (Sahrawat 2003).…”

Section: Factors Controlling Contemporary Metal Dispersal In the Catcmentioning

confidence: 99%

Long-term dispersal of heavy metals in a catchment affected by historic lead and zinc mining

Ciszewski

Kubsik

Aleksander-Kwaterczak

2012

J Soils Sediments

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Purpose The Matylda catchment, in southern Poland, was polluted by the discharge of mine waters from a lead and zinc mine that inundated parts of a valley floor and caused the accumulation of metal-polluted sediments. After a partial reclamation of the mine site in the early 1980s, polluted sediments continue to accumulate on downstream floodplains and in fishponds. The aim of this study was to reconstruct the changes in metal dispersal during 100 years of mining and during the 40-year post-mining period and to propose a strategy for pollution mitigation in the area. Materials and methods Analyses of Cu, Cd, Pb, Zn, Mn, Ca, Mg and Fe concentrations, speciation of heavy metals and mineralogical analyses were undertaken on overbank sediment cores and in stream sediments. Concentrations of the same elements and macro-ions soluble in stream waters were also determined. Results and discussion Concentrations of Zn, Cd and Pb in the sediment profiles vary between 40,000 and 55,000, 300 and 600 and 30,000 and 50,000 mg kg -1 , respectively. Changes of metal concentrations and the stratigraphy of sediments from the floodplains, stream channels and fishponds suggest rapid changes of metal loads migrating downstream during both the mining and post-mining periods. Since the time of mine closure, fine-grained, mine-derived sediments (ca. 12 cm thick) have been the main source of pollution of post-mining sediments and surface waters. Closure of the mine was followed by a relatively short period of rapid redistribution of sediment-associated heavy metals in the stream channel. Since the 1980s, the floodplain and fishponds have received a constant supply of metals. It contrasts with the slow sediment accretion rate and a rapid decrease of metal concentrations in floodplain pools due to dilution by decomposed leaf litter. A fivefold increase of Cd content in waters over the 4.6 km reach of the Matylda stream indicates continuous leaching of this element from the contaminated valley floor. Conclusions Unsuccessful mine site rehabilitation is due to leaching of mine-originated sediments dispersed over the valley bottom. However, the rate of metal remobilization over the last 40 years is low because of the small thickness and widespread anoxic conditions that prevail within both recent and mine-originated sediments and the alkaline pH of stream water, which reduces metal mobility. Distribution of the contaminated layer over a large area of the valley bottom precludes cost-efficient catchment rehabilitation.

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Effect of decomposing litter on the mobility and availability of metals in the soil of a recently created floodplain

Cited by 22 publications

References 37 publications

Effect of Water Table Level on Metal Mobility at Different Depths in Wetland Soils of the Scheldt Estuary (Belgium)

Effect of Water Table Level on Metal Mobility at Different Depths in Wetland Soils of the Scheldt Estuary (Belgium)

Effect of date palm waste compost on forage alfalfa growth, yield, seed yield and minerals uptake

Long-term dispersal of heavy metals in a catchment affected by historic lead and zinc mining

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