气候变化领域集成服务门户(CCPortal): Modeling salt redistribution and plant growth in reclaimed saline-sodic overburden upland forests: A case study from the Athabasca Oil Sands Region, Canada

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DOI	10.1016/j.foreco.2020.118154
	Modeling salt redistribution and plant growth in reclaimed saline-sodic overburden upland forests: A case study from the Athabasca Oil Sands Region, Canada
	Welegedara N.P.Y.; Grant R.F.; Quideau S.A.; Mezbahuddin S.
发表日期	2020
ISSN	0378-1127
卷号	472
英文摘要	Migration of salts from overburden/mine spoil with elevated salinity and sodicity into placed soil reclamation cover materials can adversely affect forest growth. In this study, we explored whether the ecosystem model ecosys which uses water potential and salt concentration gradients to simulate lateral and vertical water and solute fluxes can be used to determine the effects of salt redistribution on plant productivity in reclaimed landforms. In this study, salt transport and consequent effects on plant growth were simulated and tested against electrical conductivity (EC) and plant growth measured with soil cover depths of 35 cm, 50 cm and 100 cm in a 17-year-old forest reclamation site on a slope constructed on saline-sodic overburden in Northern Alberta. Overall, results from this study demonstrated the applicability of ecosys in predicting salinity effects on forest productivity in reclaimed landscapes. The modelled results showed that the upward salt movement from overburden to coversoil was influenced by the cover depth as observed in the measured values. Upward salt movement into the covers equilibrated with modelled downslope salt discharge after nine years from reclamation, maintaining a stable EC profile in the root zone. Even though modelled aspen vs. white spruce growth was adversely affected by salinity in shallow covers (≤50 cm depth) during dry years, long-term plant productivity in all the covers did not change markedly under the current climate. A clear topographical effect on salinity in the reclamation covers was not found during the study period, although the modelled salt discharge indicated a risk of salinization in downstream areas. © 2020 Elsevier B.V.
英文关键词	Ecosys; Reclamation cover depth; Saline-sodic overburden; Salt redistribution
语种	英语
scopus关键词	Climate change; Forestry; Oil sands; Plants (botany); Productivity; Soils; Athabasca oil sands; Electrical conductivity; Forest productivity; Forest reclamation; Plant productivity; Salt concentration; Soil reclamations; Topographical effects; Reclamation; discharge; electrical conductivity; overburden; salinization; sodic soil; sodicity; soil cover; topography; Coverings; Forestry; Growth; Plants; Productivity; Reclamation; Salinity; Soil; Alberta; Athabasca Oil Sands; Canada; Picea glauca
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155211
作者单位	Department of Renewable Resources, University of Alberta, Earth Sciences Building, Edmonton, AB T6G 2E3, Canada; Environmental Stewardship Branch, Alberta Agriculture and Forestry, Edmonton, Alberta, Canada
推荐引用方式 GB/T 7714	Welegedara N.P.Y.,Grant R.F.,Quideau S.A.,et al. Modeling salt redistribution and plant growth in reclaimed saline-sodic overburden upland forests: A case study from the Athabasca Oil Sands Region, Canada[J],2020,472.
APA	Welegedara N.P.Y.,Grant R.F.,Quideau S.A.,&Mezbahuddin S..(2020).Modeling salt redistribution and plant growth in reclaimed saline-sodic overburden upland forests: A case study from the Athabasca Oil Sands Region, Canada.Forest Ecology and Management,472.
MLA	Welegedara N.P.Y.,et al."Modeling salt redistribution and plant growth in reclaimed saline-sodic overburden upland forests: A case study from the Athabasca Oil Sands Region, Canada".Forest Ecology and Management 472(2020).