Abstract
Wildfires are occurring with an increasing frequency, and substances they generate can negatively affect the environment. A pot experiment with Lolium perrene was performed on burnt soil supplemented with organic (biochar, compost) and inorganic (NPK fertilizer) supplements and combinations of soil amendments in order to assess the possibility of aided phytomanagement of fire-affected areas. Soil amendments affect more aboveground biomass growth than underground biomass growth. Organic amendment, biochar, and compost promoted aboveground biomass growth; however, they did not increase the bioconcentration of metal elements in the roots. Unamended burnt soil achieved the highest bioconcentration of metal elements in underground biomass, while it produced significantly less aboveground biomass than burnt soil amended with biochar and with compost. Based on the ash composition from this study, aided phytostabilization appears to be a suitable phytomanagement method, as the priority is to rapidly recover vegetation in order to prevent soil erosion. This study therefore recommends selecting a suitable phytoremediation method based on the composition of ash.
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