Fate of airborne metal pollution in soils as related to agricultural management: 2. Assessing the role of biological activity in micro-scale Zn and Pb distributions in A, B and C horizons

Autor: Isabelle Lamy, Alain Bermond, C. Fernandez, Philippe Cambier, F. van Oort, Jérôme Labanowski, Toine Jongmans
Přispěvatelé: UR 0251 Physico-chimie et Ecotoxicologie des Sols d'agrosystèmes contaminés, Institut National de la Recherche Agronomique (INRA)-Santé des plantes et environnement (S.P.E.)-Environnement et Agronomie (E.A.)-Physico-chimie et Ecotoxicologie des Sols d'agrosystèmes contaminés (PESSAC), Wageningen University and Research [Wageningen] (WUR), Environnement et Grandes Cultures (EGC), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Wageningen University and Research Centre [Wageningen] (WUR), AgroParisTech-Institut National de la Recherche Agronomique (INRA)
Rok vydání: 2010
Předmět:
sol
métal
010501 environmental sciences
01 natural sciences
ZINC
activité biologique
Land Dynamics
heavy-metals
activité microbienne
media_common
VERS DE TERRE
2. Zero hunger
chemistry.chemical_classification
AGRICULTURAL LAND MANAGEMENT
ATMOSPHERIC DEPOSITION
LEAD
BIOLOGICAL ACTIVITY
SIZE FRACTIONS
METAL DISTRIBUTION
biology
casts
04 agricultural and veterinary sciences
PE&RC
Tillage
Deposition (aerosol physics)
tillage
Soil horizon
earthworm activity
Pollution
media_common.quotation_subject
pollution atmosphérique
Soil Science
chemistry.chemical_element
Soil science
Zinc
[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study
Leerstoelgroep Landdynamiek
plomb
Organic matter
fractionation
organic-matter
0105 earth and related environmental sciences
polluant
Earthworm
turnover
clay
15. Life on land
biology.organism_classification
pollution du sol
chemistry
13. Climate action
Soil water
extraction
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
bioavailability
qualité du sol
Zdroj: European Journal of Soil Science 61 (2010) 4
European Journal of Soil Science
European Journal of Soil Science, Wiley, 2010, 61 (4), pp.514-524. ⟨10.1111/j.1365-2389.2010.01256.x⟩
European Journal of Soil Science 4 (61), 514-524. (2010)
European Journal of Soil Science, 61(4), 514-524
ISSN: 1365-2389
1351-0754
DOI: 10.1111/j.1365-2389.2010.01256.x
Popis: This work assesses relationships between characteristic aggregate microstructures related to biological activity in soils under different long-term land use and the distribution and extractability of metal pollutants. We selected two neighbouring soils contaminated with comparable metal loads by past atmospheric deposition. Currently, these soils contain similar stocks, but different distributions of zinc (Zn) and lead (Pb) concentrations with depth. One century of continuous land use as permanent pasture (PP) and conventional arable (CA) land, has led to the development of two soils with different macro- and micro-morphological characteristics. We studied distributions of organic matter, characteristic micro-structures and earthworm-worked soil by optical microscopy in thin sections from A, B and C horizons. Concentrations and amounts of total and EDTA-extractable Zn and Pb were determined on bulk samples from soil horizons and on size-fractions obtained by physical fractionation in water. Large amounts of Zn and Pb were found in 2–20-µm fractions, ascribed to stable organo-mineral micro-aggregates influenced by root and microbial activity, present in both soils. Unimodal distribution patterns of Zn, Pb and organic C in size-fractions were found in horizons of the CA soil. In contrast, bimodal patterns were observed in the PP soil, because large amounts of Zn and Pb were also demonstrated in stable larger micro-aggregates (50–100-µm fractions). Such differing distribution patterns characterized all those horizons markedly influenced by earthworm activity. Larger earthworm activity coincided with larger metal EDTA-extractability, particularly of Pb. Hence, land use-related biological activity leads to specific soil microstructures affecting metal distribution and extractability, both in surface and subsurface horizons.
Databáze: OpenAIRE
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