This study investigated the optimal sowing density of Elymus nutans for vegetation–concrete structures in slope protection. Six treatments with varying densities (control, 1100, 2200, 3300, 4400, and 5500 seeds/m²) were established. Aboveground biomass increased with density, while plant height, root surface area, root length, and underground biomass initially increased then decreased. Erosion resistance and soil shear strength showed a similar trend, peaking at a medium-high density (4400 seeds/m²). The optimal sowing density was determined to be approximately 4400 plants/m².
Publisher
Scientific Reports
Published On
Nov 24, 2020
Authors
Xiangqian Tan, Yongwen Huang, Danwei Xiong, Kun Lv, Fangqing Chen
Tags
Elymus nutans
sowing density
slope protection
biomass
erosion resistance
soil shear strength
vegetation-concrete structures
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