Growth and survival of native wetland species in shallow capped centrifuged tailings and co-mixed tailings: A meso-scale greenhouse study

IF 1.5 4区 农林科学 Q4 SOIL SCIENCE Canadian Journal of Soil Science Pub Date : 2023-05-25 DOI:10.1139/cjss-2022-0129
Dani Degenhardt, A. Van Dongen, J. Hudson, N. Utting, Stefan G. Schreiber
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引用次数: 1

Abstract

This three-year meso-scale greenhouse study used 55-gallon columns to evaluate the survival and growth of boreal wetland communities planted on centrifuge (CF) tailings and co-mixed (CM) tailings capped with different reclamation cover soil capping designs. The CF tailings were capped with a shallow layer (10 and 30 cm) of peat reclamation material (PRM) and the CM tailings were capped with a shallow layer (5 cm) of PRM above (15 or 35 cm) of reclamation subsoil (till). After three years, plant survival and growth on CF tailings showed significant improvement with a 10 cm PRM cap compared to the uncapped tailings, and plants growing on a 30 cm PRM cap outperformed those on the 10 cm PRM cap. Plant growth on CM tailings was significantly improved with a soil cover containing 5 cm PRM and at least 15 cm till. Among the seven native wetland species included in this study, the top performing species survival and above-ground biomass were Salix bebbiana, Scirpus microcarpus and Carex aquatilis.
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浅盖离心尾矿和共混尾矿中原生湿地物种的生长和生存:中尺度温室研究
本中尺度温室研究采用55加仑色谱柱对不同复盖土壤封顶设计的离心(CF)尾矿和共混(CM)尾矿上种植的北方湿地群落的生存和生长进行了评价。CF尾砂覆以10 cm和30 cm的浅泥炭复垦材料(PRM), cm尾砂覆以15 cm或35 cm的浅泥炭复垦底土(till)上5 cm的PRM。3年后,施用10 cm PRM盖层的CF尾矿上植物的生长和存活情况明显优于未施用PRM盖层,施用30 cm PRM盖层的植物生长情况优于施用10 cm PRM盖层。施用5 cm PRM盖层和至少15 cm耕层的cm尾矿上植物生长情况明显改善。在本研究的7种本土湿地物种中,柳(Salix bebbiana)、山菖蒲(Scirpus microcarpus)和水菖蒲(Carex aquatilis)的物种存活率和地上生物量表现最好。
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来源期刊
Canadian Journal of Soil Science
Canadian Journal of Soil Science 农林科学-土壤科学
CiteScore
2.90
自引率
11.80%
发文量
73
审稿时长
6.0 months
期刊介绍: The Canadian Journal of Soil Science is an international peer-reviewed journal published in cooperation with the Canadian Society of Soil Science. The journal publishes original research on the use, management, structure and development of soils and draws from the disciplines of soil science, agrometeorology, ecology, agricultural engineering, environmental science, hydrology, forestry, geology, geography and climatology. Research is published in a number of topic sections including: agrometeorology; ecology, biological processes and plant interactions; composition and chemical processes; physical processes and interfaces; genesis, landscape processes and relationships; contamination and environmental stewardship; and management for agricultural, forestry and urban uses.
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