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

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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The Ecological Vegetation by the Neutralizing Treatment Techniques of the Acid Sulfate Soil

특이산성토의 중화처리기법에 따른 생태적 녹화

  • Cho, Sung-Rok (Sansu Greentech., CO., Ltd.) ;
  • Kim, Jae-Hwan (Dept. of Human Environment Design, College of Science, Cheongju University)
  • 조성록 (산수그린텍(주)) ;
  • 김재환 (청주대학교 휴면환경디자인학부 조경도시계획전공)
  • Received : 2018.11.29
  • Accepted : 2019.01.17
  • Published : 2019.02.28
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Abstract

This study was composed of four treatments [no treatment, phosphate + limestone layer treatment, phosphate + sodium bicarbonate + cement layer treatment, and phosphate + sodium bicarbonate + limestone layer treatment] for figuring out vegetation effects on the acid drainage slope. Treated acid neutralizing techniques were effective for neutralizing acidity and vegetative growth in order of [first: phosphate + sodium bicarbonate + limestone layer treatment, second: phosphate + sodium bicarbonate+cement layer treatment, third: phosphate + limestone layer treatment and fourth: no treatment] on the acid drainage slope. We found out that sodium bicarbonate treatment was additory effect on neutralizing acidity and increasing vegetaive growth besides phosphate and neutralizing layer treatments. In neutralizing layer treatments, Limestone layer was more effective for vegetation and acidity compared to cement layer treatment. Cement layer showed negative initial vegetative growth probably due to high soil hardness and toxicity in spite of acid neutralizing effect. Concerning plants growth characteristics, The surface coverage rates of herbaceous plants, namely as Lotus corniculatus var. japonicus and Coreopsis drummondii L were high in the phosphate + sodium bicarbonate + limestone layer treatment while Festuca arundinacea was high in the phosphate + sodium bicarbonate + cement layer treatment. We also figured out that soil acidity affected more on root than top vegetative growth.

Keywords

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Figure 1. Distribution of rocks with high potential of acid drainage.

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Figure 2. Four different acid drainage neutralizing systems.

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Figure 3. Acidity content(pH) affected by four different acid drainage neutralizing systems Control : no treatment, Treatment1 : K2HPO4 and [(Ca, Mg)CO3.] treatment, Treatment2 : K2HPO4, NaHCO3 and Cement treatment, Treatment3 : K2HPO4, NaHCO3 and [(Ca, Mg)CO3.] treatment.

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Figure 4. Plant root status affected by four different acid drainage neutralizing systems.(11 November, 2018)

Table 1. Plant germination rate and seeding amount of each plot used in this experiment.

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Table 2. Soil properties of the acid drainage slopes used for seeding experiments.

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Table 3. Vegetation base materials of the used for experiments.

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Table 4. Soil hardness(mm) affected by four different acid drainage neutralizing systems.

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Table 5. Vegetation Coverage rate affected by four different acid drainage neutralizing systems(%).

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Table 6. Native herbaceous plant and cool-season turfgrass coverage rate affected by four different acid drainage neutralizing systems(%).

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