Effects of Stockpiling on Topsoil Biogeochemistry for Semiarid Mine Reclamation DOI Creative Commons

Justin B. Ledesma,

Julia W. Neilson, Raina M. Maier

et al.

Mining Metallurgy & Exploration, Journal Year: 2025, Volume and Issue: 42(1), P. 15 - 26

Published: Jan. 8, 2025

Abstract Stockpiling and storage of topsoil for use in reclamation revegetation are common practices many mining operations. However, stockpiling can lead to significant changes physical biogeochemical properties that may be detrimental reclamation. The objective this research was assess the effect long-term on soil a semiarid region. We hypothesized would change systematically with depth reflecting shift anaerobic conditions resulting general decrease health. To address hypothesis, boreholes > 20-m deep were drilled into 14-year-old stockpile at copper mine Arizona samples collected every ~ 75 cm. Samples analyzed DNA biomass, texture, agronomic properties, mineral composition, oxalate dithionite extraction active phases, total elemental composition. Depth profiles revealed non-systematic variables depth, including variation organic matter (OM), extractable nitrate (NO 3 -N) ammonium (NH 4 nitrogen, plant-available manganese (Mn) iron (Fe), oxalate-extractable Mn Fe. Differences associated zones variable redox state mediated by OM content layer depth. Anaerobic observed depths greater than m where 1%, aerobic up 15 < 1%. This study demonstrates importance composition processes during contributes improved understanding management as resource degraded lands environments.

Language: Английский

Phytostabilization potential and microbial response to the reclamation of native Cynodon dactylon in spoil heaps from a multiple-metal mining site in Southwest China DOI
Bowen Wang,

Yanying Guo,

Xuejiao Li

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 378, P. 124758 - 124758

Published: March 2, 2025

Language: Английский

Citations

0
Effects of Stockpiling on Topsoil Biogeochemistry for Semiarid Mine Reclamation DOI Creative Commons

Justin B. Ledesma,

Julia W. Neilson, Raina M. Maier

et al.

Mining Metallurgy & Exploration, Journal Year: 2025, Volume and Issue: 42(1), P. 15 - 26

Published: Jan. 8, 2025

Abstract Stockpiling and storage of topsoil for use in reclamation revegetation are common practices many mining operations. However, stockpiling can lead to significant changes physical biogeochemical properties that may be detrimental reclamation. The objective this research was assess the effect long-term on soil a semiarid region. We hypothesized would change systematically with depth reflecting shift anaerobic conditions resulting general decrease health. To address hypothesis, boreholes > 20-m deep were drilled into 14-year-old stockpile at copper mine Arizona samples collected every ~ 75 cm. Samples analyzed DNA biomass, texture, agronomic properties, mineral composition, oxalate dithionite extraction active phases, total elemental composition. Depth profiles revealed non-systematic variables depth, including variation organic matter (OM), extractable nitrate (NO 3 -N) ammonium (NH 4 nitrogen, plant-available manganese (Mn) iron (Fe), oxalate-extractable Mn Fe. Differences associated zones variable redox state mediated by OM content layer depth. Anaerobic observed depths greater than m where 1%, aerobic up 15 < 1%. This study demonstrates importance composition processes during contributes improved understanding management as resource degraded lands environments.

Language: Английский

Citations

0