Biochar Promotes the Germination and Growth of Herbaceous Seeds Hydroseeded on Gold Mine Tailings

Tailings that are generated by gold mining activities are frequently abandoned to let nature initiate ecological succession processes. Given the slowness of natural processes, colonization mechanisms could be accelerated through assisted revegetation with herbaceous species as pioneer species prior...

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Bibliographic Details
Published in:International Journal of Environmental Research 2022-08, Vol.16 (4), Article 46
Main Authors: Jean, Roudy, Khasa, Damase P.
Format: Article
Language:English
Subjects:
Abandoned mines
Avena sativa
Bark
Biomass
Charcoal
Colonization
Earth and Environmental Science
Ecological succession
Environment
Environmental Engineering/Biotechnology
Environmental Management
Festuca rubra
Flowers & plants
Geoecology/Natural Processes
Germination
Gold
Gold mines & mining
Grasses
Greenhouses
Growth chambers
Hardwoods
Indigenous species
Landscape/Regional and Urban Planning
Mine tailings
Mine wastes
Mining
Mixtures
Natural Hazards
Physicochemical properties
Plant growth
Plant species
Pyrolysis
Reintroduction
Research Paper
Revegetation
Rocks
Seedlings
Seeds
Tailings
Trifolium repens
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Summary:Tailings that are generated by gold mining activities are frequently abandoned to let nature initiate ecological succession processes. Given the slowness of natural processes, colonization mechanisms could be accelerated through assisted revegetation with herbaceous species as pioneer species prior to reintroduction of native woody species to stabilize them and reduce their transport in the environment. Application of biochar increasingly has been suggested as a means of supporting germination, emergence and growth of seedlings on mine tailings. In this study, we assessed the effects of two types of biochar on the germination and growth of Avena sativa , Festuca rubra and Trifolium repens that were hydroseeded onto waste rock and fine tailings from gold mining. The first biochar was made through pyrolysis of maple bark at 700 °C and the second biochar was derived from pyrolysis of hardwood chips (
ISSN:1735-6865
2008-2304
DOI:10.1007/s41742-022-00423-8