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KMID : 1024520210300100803
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Journal of the Environmental Sciences
2021 Volume.30 No. 10 p.803 ~ p.809
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Synergistic Effects for Remediation of Salt-affected Soil using Dendranthema zawadskii var. latilobum and Soil Amendments under
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Yoon Yong-Han
Yang Ji
Park Je-Min
Ju Jin-Hee
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Abstract
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This study aimed to investigate the effects of soil amendment (heat-expanded clay and active carbon) and planting of Dendranthema zawadskii var. latilobum on the remediation of salt-affected soil and the plant growth under high calcium chloride (CaCl2) concentration. The experimental group comprised treatments including Non treatment (Cont.), heat-expanded clay (H), active carbon (AC), planting (P), heat-expanded clay+planting (H+P), active carbon+planting (AC+P). A 200 mL solution of CaCl2 at a concentration of 10 g·L-1 was applied as irrigation once every 2 weeks. Compared to the Cont., the incorporation of the ‘heat-expanded clay’ amendment decreased electrical conductivity of the soil leachate and cation exchange capacity, whereas the growth of Dendranthema zawadskii var. latilobum was relatively increased. These results suggest that the combination of ‘heat-expanded clay’ amendment and planting will mitigate negative effect of de-icing salts and improve plant growth in salt-contaminated roadside soils.
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KEYWORD
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De-icing salts, Heat-expanded clay, Salt-tolerant plants, Soil-plant continuum, Road salt retention
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