scholarly journals Effects of Woody Debris And Cover Soil Types On Soil Properties And Vegetation Four‐Five Years After Oil Sands Reclamation

2021 ◽  
Author(s):  
Katryna BC Forsch ◽  
Amalesh Dhar ◽  
M. Anne Naeth
Keyword(s):  
Soil Properties ◽  
Oil Sands ◽  
Woody Debris ◽  
Soil Types ◽  
Cover Soil ◽  
Oil Sands Reclamation

Plant community development following reclamation of oil sands mines using four cover soil types in northern Alberta

2019 ◽  
Vol 28 (1) ◽  
pp. 82-92 ◽  
Author(s):  
Amalesh Dhar ◽  
Philip G. Comeau ◽  
M. Anne Naeth ◽  
Bradley D. Pinno ◽  
Robert Vassov
Keyword(s):  
Community Development ◽  
Plant Community ◽  
Oil Sands ◽  
Soil Types ◽  
Cover Soil ◽  
Plant Community Development ◽  
Northern Alberta

scholarly journals Effects of Capping Strategy and Water Balance on Salt Movement in Oil Sands Reclamation Soils

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 512
Author(s):  
Xiaopeng Li ◽  
Bin Ma ◽  
Bonnie Drozdowski ◽  
Francis Salifu ◽  
Scott X. Chang
Keyword(s):  
Water Balance ◽  
Barrier Layer ◽  
Oil Sands ◽  
Upward Movement ◽  
Salt Accumulation ◽  
Saline Groundwater ◽  
Rooting Zone ◽  
Cover Soil ◽  
Salt Migration ◽  
Oil Sands Reclamation

The success of oil sands reclamation can be impacted by soil salinity depending on the materials used for soil reconstruction and the capping strategies applied. Using both a greenhouse-based column experiment and numerical modeling, we examined the potential pathways of salt migration from saline groundwater into the rooting zone under different capping strategies (the type and the thickness of the barrier layer) and water balance scenarios. The experimental results showed that there would be salinity issues in the cover soil within several growing seasons if there was a shallow saline groundwater table and if the soil was not properly reconstructed. The thickness of the barrier layer was the most significant factor affecting the upward movement of saline groundwater and salt accumulation in the cover soil. The suitable thickness of the barrier layer for preventing the upward movement of saline groundwater and salt accumulation in the cover soil for each material varied. A numerical simulation for a 15-year period further indicates that, when the cover soil was 50 cm of peat-mineral soil mix and when wet, dry, or normal climatic conditions were considered, the minimum barrier thickness to restrain salt intrusion into the cover soil in the long term was about 75 or 200 cm for coarse tailings sand or overburden barrier material, respectively. In view of the above, to minimize salt migration into the rooting zone and ensure normal plant growth, oil sands reclamation should consider salt migration when designing soil capping strategies.

Log landings are methane emission hotspots in managed forests

2021 ◽  
Author(s):  
Juliana Vantellingen ◽  
Sean C. Thomas
Keyword(s):  
Organic Matter ◽  
Soil Properties ◽  
Management Practices ◽  
Emission Rate ◽  
Woody Debris ◽  
Organic Matter Content ◽  
Growing Season ◽  
Matter Content ◽  
Emission Rates ◽  
Managed Forests

Log landings are areas within managed forests used to process and store felled trees prior to transport. Through their construction and use soil is removed or redistributed, compacted, and organic matter contents may be increased by incorporation of wood fragments. The effects of these changes to soil properties on methane (CH<sub>4</sub>) flux is unclear and unstudied. We quantified CH<sub>4</sub> flux rates from year-old landings in Ontario, Canada, and examined spatial variability and relationships to soil properties within these sites. Landings emitted CH<sub>4</sub> throughout the growing season; the average CH<sub>4</sub> emission rate from log landings was 69.2 ± 12.8 nmol m<sup>-2</sup> s<sup>-1</sup> (26.2 ± 4.8 g CH<sub>4</sub> C m<sup>-2</sup> y<sup>-1</sup>), a rate comparable to CH<sub>4</sub>-emitting wetlands. Emission rates were correlated to soil pH, organic matter content and quantities of buried woody debris. These properties led to strong CH<sub>4</sub> emissions, or “hotspots”, in certain areas of landings, particularly where processing of logs occurred and incorporated woody debris into the soil. At the forest level, emissions from landings were estimated to offset ~12% of CH<sub>4</sub> consumption from soils within the harvest area, although making up only ~0.5% of the harvest area. Management practices to avoid or remediate these emissions should be developed as a priority measure in “climate-smart” forestry.

scholarly journals ISLANDS – SOIL PATCHES AND PLANT COMMUNITY DYNAMICS ON A NEW OIL SANDS RECLAMATION DESIGN

2016 ◽  
Vol 2016 (1) ◽  
pp. 28-44 ◽  
Author(s):  
Bradley D. Pinno ◽  
◽  
Ira Sherr ◽  
Ruth C. Errington ◽  
Krista Shea
Keyword(s):  
Plant Community ◽  
Oil Sands ◽  
Community Dynamics ◽  
Plant Community Dynamics ◽  
Oil Sands Reclamation
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