• 한국환경복원기술학회지
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• 제7권3호
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• pp.86-95
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• 2004

This study was conducted to develop recycle revegetation methods for the restoration of the steep slopes by using fresh wood chip from construction sites. In general, the fresh wood chips can be used as soil media for the restoration works, because they can increase infiltration of rainfall and give enough porous to breathe and elongate for the root growth as well as economic value. The experiment was carried out to compare the effect of fresh wood chips from different mixing with soil, organic material and macromolecular compound which used for slope restoration works conducted by Hyunwoo green(Ltd.). The main results by monitoring for two years are summarized as follows; 1. The soil media made with low percentage of fresh wood chip covered quickly by herb plants. Especially, the soil mixture Type C (wood chip 20%) showed 80 percent ground coverage within two months after seeding. 2. The soil mixture type E (wood chip 40%) and type F (wood chip 50%) which contains more fresh wood chips than soil type C was under 30 percent ground coverage because wood plants are germinated well. If the restoration works aims at making forest, then the soil type E and F would be recommended than using soil type C. 3. Among the woody plants, Ailanthus alfissima, Pinus rigida, Pinus densiflora, and Albizzia julibrissin showed high percentage of germination rates and vigorous growth. In case of shrubs, Lespedeza cyrtobotria and Indigofera pseudo-tintoria scored high percentage of germination rates. 4. In native plants, Chrysanthemum indicum, Artemisia princeps, Lutos corniculatus and Imperata cylindrica showed high percentage of appearance. In case of introduced herbs, Coreopsis lanceolata, Coreopsis tinctoria and Oenothera oborata grew so vigorously. 5. The soil types which including fresh wood chips over 30-40 percentage showed the most diverse plant composition and the most effective germination rates and growth pattern with woody plants. 6. This works to develop recycle revegetation methods using fresh wood chips need more efforts for monitoring the exact effect of fresh wood chips as the soil media.

• 한국환경복원기술학회지
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• 제12권4호
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• pp.72-80
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• 2009

The main purpose of this study is as follows : Finding a solution for fresh wood chips to be used as an alternative growing-media through a study of the formation method of a compost base that is applicable on both construction site and composting factory to ferment fresh wood chips produced from construction site as well as a study on adjuvant or secondary materials. The result from the experiment plot using wood chips sized 50mm or less, manure and fertilizer mixed manure as a source of nitrogen to compost fresh wood chips has shown that the temperatures 9days and 3days after the beginning of the experiment reached to $49.0^{\circ}C$ and $40.4^{\circ}C$ respectively, the heating duration was 7days and 4days respectively, and the C/N ratio was 26.5 and 25.3, each satisfying the standard for composted manure (25.0~40.0). Also, the other result from another experiment plot using mixture of sandy soil and microorganism as an inoculation source of microorganism has shown that the temperature 10days after the beginning of the experiment reached to $67.6^{\circ}C$ and lasted 16days. The experiment plot using sandy soil has shown the highest figure of $5.3{\sim}108$ CFU/g in terms of number of microorganism. The result from the experiment plots for on-site composting of fresh wood chips have shown that the experiment plot that used sandy soil with fertilizer due to supply restriction of manure as a nitrogen source in construction site reached the high temperature of $54.7^{\circ}C$ after 3days of experiment beginning and maintained heating state for 17days and reached 30.6 of C/N ratio, satisfying the standard for composted manure.

• 한국환경복원기술학회지
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• 제11권4호
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• pp.119-128
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• 2008

In this study, we attempted to seek out the ways to recycle fresh root-chips in the slope revegetation works by breaking tree root wastes occurring during the construction works, also to review the applicability of fresh root-chips as the soil media in slope revegetation works. For this purpose, we organized test units in order to investigate on-site applicability of fresh root-chips (broken chips). In order to examine the desirable ration of combining fresh root-chips with the hydroseeding soil media on the cutting slopes, we organized test units depending on the amount of combination. The following is the main experimental results. 1. At first, we analyzed properties of hrdro-seeding soil media and soil of the experimental sites. The overall results demonstrate that all the test units show proper range for vegetation. 2. We believe that the physical properties of soils in the earlier phase of restoration works on the sloped sites are not greatly affected by the fact whether broken chips exist or not. However, as time elapses, broken chips needs to be investigated further on what kind of impact they have on the soil condition. 3. More species are found in the test unit combining broken chips and we believe that it will contribute to blossoming of green plants and ecological succession of neighboring plants. 4. We performed experiment on possibility for fresh root-chips as substitutes for the hydro-seeding soil-media. In the test unit that combines fresh root-chips, its mixture ratio tends to exceed that of the test unit that does not combine fresh root-chips by 5 %. In case of the Thick-Layer-Soil-Media Hydroseeding works, the mixture ratio of the test unit that combines fresh root-chips after 16 weeks exceeds that of the test unit that does not combine fresh root-chips by 75%. 5. From the result of our experiment, it is obvious that the ratio of mixture and the number of emerging species are higher for the test unit combining fresh root-chips than the test unit that does not combine them. In other words, we can replace the hydro-seeding-soil-media with some Fresh root-chips without affecting the physical property of soil.

• 원예과학기술지
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• 제18권1호
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• pp.33-38
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• 2000

양액 재배용 배지의 국산화 필요성과 양액 재배 폐암면 재활용 배지를 개발하기 위하여 입자화된 폐암면과 목재 파쇄 입자를 혼합한 배지에서, 페튜니아 플러그묘를 재배하여 배지로서의 효과를 알아보고자 본 실험을 수행하였다. 1차 실험은 소독한 폐암면 입자와 파쇄기로 파쇄한 후 6개월 동안 후숙한 뒤 2.8mm와 5.6mm 체를 통과한 밤나무 입자를 100:0, 75:25, 50:50, 25:75, 0:100 부피비율로 조합한 혼합 배지에서 페튜니아의 생육을 조사하였다. 그리고 2차 실험은 소독한 폐암면에 4mm 밤나무 파쇄 입자, 4mm 소나무 파쇄 입자, 코이어, 피트모스, 그리고 펄라이트를 조합하여 만든 20가지 혼합 상토배지에서 공시식물의 생육을 조사하였다. 페튜니아의 생육을 조사한 결과 1차 실험에서는 밤나무 입자의 크기에 따른 생육은 유의차가 없었고, 대조구와 100% 폐암면인 처리구에서 생육이 좋았으며 밤나무의 혼합 비율이 높아질수록 생육이 저조하였다. 2차 실험에서 페튜니아의 초장, 지상부 생체중과 건물중은 폐암면+피트모스+코이어에서 가장 높았고, 다음으로 폐암면+피트모스구에서 높게 나타났다. 밤나무나 소나무를 혼합한 처리구에서 초장이 낮게 나타났는데, 특히 밤나무를 혼합한 처리구에서 낮게 나타났다. 지하부 등급은 폐암면+피트모스+펄라이트구에서 가장 높았고, 다음으로 대조구, 폐암면+피트모스+코이어구 순으로 높게 나타났다. 즉 폐암면 100%나 이것에 피트모스, 코이어, 또는 펄라이트를 혼합한 구에서 대조구보다 양호한 생육을 보인 반면 폐암면, 피트모스, 또는 코이어의 혼합비율이 낮아질수록 생육이 억제되었다.