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http://dx.doi.org/10.17820/eri.2018.5.3.180

Effects of the β-Glucan- and Xanthan gum-based Biopolymer on the Performance of Plants Inhabiting in the Riverbank  

An, Joo Hee (School of Earth Sciences and Environmental Engineering, Gwanju Institute of Science and Technology)
Jeong, Hyungsoon (School of Earth Sciences and Environmental Engineering, Gwanju Institute of Science and Technology)
Kim, Eunsuk (School of Earth Sciences and Environmental Engineering, Gwanju Institute of Science and Technology)
Publication Information
Ecology and Resilient Infrastructure / v.5, no.3, 2018 , pp. 180-188 More about this Journal
Abstract
Biopolymer based on microbial ${\beta}$-glucan and xanthan gum is a rising geotechnical material that can enhance the cohesion between soil particles and consequently reduce soil erosion. Recently, biopolymer is proposed to utilize for the riverbank strengthening. As an effort of the ecological assessment of biopolymer application in civil engineering, this study examined the effects of biopolymer on seed germination and growth of nine plant species inhabiting in the Korean riverside. Responses of above-ground growth to the biopolymer differed among plant species. One species grew less but others maintained their growth when plants were grown in the soil with biopolymer. In contrast, root grew more vigorously and root/shoot ratio decreased in the biopolymer across testing plant species. These results indicate that biopolymer application on the river bank likely stimulate root growth of native plant species, which, in turn, possibly reinforces riverbank. Species specific responses of above-ground growth implies that ecological effects of biopolymer application would depend on the species composition of the ecosystem.
Keywords
Biopolymer; Germination; Growth; Riverbank; Wild plants;
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