title: Phytostabilization of semiarid soils residually contaminated with trace elements using by-products: sustainability and risks.
abstract: We investigated the efficiency of various by-products (sugarbeet lime, biosolid compost and leonardite), based on single or repeated applications to field plots, on the establishment of a vegetation cover compatible with a stabilization strategy on a multi-element (As, Cd, Cu, Pb and Zn) contaminated soil 4-6 years after initial amendment applications. Results indicate that the need for re-treatment is amendment- and element-dependent; in some cases, a single application may reduce trace element concentrations in above-ground biomass and enhance the establishment of a healthy vegetation cover. Amendment performance as evaluated by % cover, biomass and number of colonizing taxa differs; however, changes in plant community composition are not necessarily amendment-specific. Although the translocation of trace elements to the plant biotic compartment is greater in re-vegetated areas, overall loss of trace elements due to soil erosion and plant uptake is usually smaller compared to that in bare soil.
authors.affiliation: Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, PO Box 1052, 41080 Sevilla, Spain. perezdemora@gmail.com
authors.forename: Alfredo
authors.initials: A
authors.lastname: Pérez-de-Mora
authors.forename: Paula
authors.initials: P
authors.lastname: Madejón
authors.forename: Pilar
authors.initials: P
authors.lastname: Burgos
authors.forename: Francisco
authors.initials: F
authors.lastname: Cabrera
authors.forename: Nicholas W
authors.initials: NW
authors.lastname: Lepp
authors.forename: Engracia
authors.initials: E
authors.lastname: Madejón
mesh_terms: D001673:Biodegradation, Environmental; D044822:Biodiversity; D018533:Biomass; D017610:Calcium Compounds / Q000737:chemistry; D002980:Climate; D052918:Environmental Restoration and Remediation / Q000379:methods*; D008903:Minerals / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D063245:Plant Development; D010944:Plants / Q000145:classification / Q000378:metabolism*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D014131:Trace Elements / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*
chemical_list: D017610:Calcium Compounds; D008903:Minerals; D010087:Oxides; D012987:Soil; D012989:Soil Pollutants; D014131:Trace Elements; C568542:leonardite; C016538:lime