Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Effect of Soil Conditioner and Loess on Physio-Chemical Properties of Dredged Soil and Seedling Height Growth of Ulmus davidiana var. japonica

토양개량재와 황토가 준설토의 이화학성과 느릅나무의 초기 생장에 미치는 영향

  • Lee, Hanna (Division of Forest Soil and Water Conservation, Korea Forest Research Institute) ;
  • Park, Chanwoo (Division of Forest Soil and Water Conservation, Korea Forest Research Institute) ;
  • Lim, Joo-Hoon (Division of Forest Soil and Water Conservation, Korea Forest Research Institute) ;
  • Koo, Namin (Division of Forest Soil and Water Conservation, Korea Forest Research Institute) ;
  • Lee, Im Kyun (Division of Research Planning and coordination, Korea Forest Research Institute)
  • 이한나 (국립산림과학원 산림수토보전과) ;
  • 박찬우 (국립산림과학원 산림수토보전과) ;
  • 임주훈 (국립산림과학원 산림수토보전과) ;
  • 구남인 (국립산림과학원 산림수토보전과) ;
  • 이임균 (국립산림과학원 연구기획과)
  • Received : 2015.01.12
  • Accepted : 2015.04.03
  • Published : 2015.06.30
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Abstract

This research was conducted to compare the effect of soil amendment and loess on physial and chemical properties of dredged soil and primary height growth of Ulmus davidiana var. japonica. Three types of research plots: control plot (Dredged soil only), DC treatment plot (Dredged soil + soil amendment) and DCL treatment plot (Dredged soil + soil amendment + Loess) were set at Okgu research site in Saemanguem. 32 trees of U. davidiana var. japonica were planted in each plots after 14 months from the construction. Soil texture, pH, electrical conductivity (EC), organic matter (OM), total nitrogen (TN), available P, exchangeable cation ($K^+$, $Na^+$, $Mg^{2+}$, $Ca^{2+}$) and sodium chloride were measured after 3 years from the construction. Also, survival rate and height of U. davidiana var. japonica were measured 22 months after planting, and the correlation between height of trees and the physico-chemical properties of soil were analyzed. Even though pH in both DC and DCL treatment plots are lower than control plot, they are still alkaline (> pH 8). OM, TN and available P in both DC and DCL treatment were higher than the control. Particularly, the content of available P in both DC and DCL treatment plots are 1.4~5.1 times and 2.0~3.1 times higher than the control respectively. The concentration of exchangeable Mg in DCL treatment plot was 1.1~5.5 times higher than the control (p < .05). The survival rate of the species was the highest in DCL treatment plot (98%) followed by DC treatment plot and the control. The average height of the trees in both DC and DCL treatment plots is 1.1m while the control is 0.8m. OM, TN, available P, K+ were significantly related to the height of U. davidiana var. japonica(p < .01). The results indicate that soil amendment affects on soil physial and chemical properties of dredged soil and height growth of U. davidiana var. japonica.

Keywords

References

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