Blended pulp mill, forest humus and mine residual material Technosols for mine reclamation: A growth-chamber study to explore the role of physiochemical properties of substrates and microbial inoculation on plant growth

摘要: A growth chamber trial was conducted to investigate the effects of blends pulp and paper mill residuals forest humus on soil properties, microbial communities germination rate biomass production annual ryegrass (Lolium multiflorum) in both acid-producing neutral mildly alkaline mine tailings a reclamation context. The organic residual amendments improved nutritional status substrates, increased pH acid-generating tailings, leading higher rates plant growth. trace addition (<0.02% sludge by dry weight) natural floor material as inoculum could increase up four-fold. application bioavailability metals were variable, with concentration soluble copper (Cu) nickel (Ni) increasing some substrates following amendments. Addition modified observed oligotrophic majority DNA sequences amended being found be closely related heterotrophic bacterial species rather than chemolithotrophic that dominate environments.