Skip to Main content Skip to Navigation
Journal articles

Effects of biochar, ochre and manure amendments associated with a metallicolous ecotype of Agrostis capillaris on As and Pb stabilization of a former mine technosol

Abstract : Metal(loid) soil pollution is a major environmental and health issue, requiring these areas to be remediated, for example through phytoremediation processes. In order to allow proper plant establishment and growth, amendments must be applied to highly contaminated and poorly fertile soils. Amendments are diverse, but many studies have shown the beneficial effects of biochar, manure and ochre, although studies on their combined use are scarce. Moreover, no studies have evaluated the effect of these combined amendments on endemic plant growth. Endemic plants growing on contaminated soils showed higher tolerance toward pollutants compared to plants coming from unpolluted areas. Therefore, the aim of the present study was to evaluate both the effect of amendments (single or combined) on the physicochemical properties of a former mining technosol, and the growth and metal(loid) accumulation ability of endemic Agrostis capillaris plants. This study revealed an improvement in the soil physicochemical properties following the application of amendments, with combined amendments showing better results than the application of just one. On top of this, Agrostis plants performed better on the amended technosols, especially the ones receiving manure, due to its high nutrient content. Finally, based on soil properties, plant growth and the metal(loid) accumulation profile, the use of biochar combined with manure seems to be the most appropriate treatment. Indeed, this treatment showed an improvement in both soil fertility and plant growth. Moreover, Agrostis plants grown in these conditions were among those showing higher root metal(loid) concentration associated with a lower translocation toward aerial parts.
Document type :
Journal articles
Complete list of metadatas

Cited literature [56 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-02863442
Contributor : Lydie Le Forestier <>
Submitted on : Thursday, September 3, 2020 - 9:16:38 AM
Last modification on : Wednesday, October 14, 2020 - 3:57:18 AM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2020-11-18

Please log in to resquest access to the document

Identifiers

Collections

Citation

Manhattan Lebrun, Romain Nandillon, Florie Miard, Lydie Le Forestier, Domenico Morabito, et al.. Effects of biochar, ochre and manure amendments associated with a metallicolous ecotype of Agrostis capillaris on As and Pb stabilization of a former mine technosol. Environmental Geochemistry and Health, Springer Verlag (Germany), In press, ⟨10.1007/s10653-020-00592-5⟩. ⟨insu-02863442⟩

Share

Metrics

Record views

132