• The Science & Technology
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• no.2 s.441
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• pp.40-42
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• 2006

• Bulletin of Korea Environmental Preservation Association
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• v.27 s.360
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• pp.47-50
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• 2005

• The Science & Technology
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• no.7 s.458
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• pp.27-29
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• 2007

• The Science & Technology
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• s.470
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• pp.42-45
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• 2008

• The Science & Technology
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• v.20 no.10 s.221
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• pp.16-21
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• 1987

• The Science & Technology
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• s.528
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• pp.42-43
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• 2013

• Environmental engineer
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• v.22 s.228
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• pp.42-48
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• 2005

• Clean Technology
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• v.19 no.3
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• pp.201-211
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• 2013

Biochar is charred materials generated during pyrolysis processes in the absence of oxygen using biomass, resulting in high carbon contents. In recent years, biochar has attracted more increasingly due to its potential role in carbon sequestration, renewable energy, waste management, soil amendment for agricultural use, and environmental remediation. Since biochar has a long-term stability in soil for thousands of years, biochar can be carbon negative compared to carbon-neutral biomass energy that decomposes eventually. Moreover, when biochar is applied to soil, crop production can be largely improved due to its high pH and its superior ability to retain water and nutrients. This paper review the research trends of biochar including the principles of carbon sequestration by biochar, its physico-chemical properties, and its applications on agricultural and environmental area.

• The Science & Technology
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• v.29 no.4 s.323
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• pp.16-17
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• 1996

인공섬유가 마술사처럼 요술을 부린다. 카멜레온처럼 색깔이 변하고 향기를 내뿜으며 세균감염도 막아주는 기능섬유가 우리나라에서도 본격 개발되고 있다. 내부온도를 높여주는 축열보온섬유와 내부온도를 떨어뜨리는 자외선ㆍ적외선 차단섬유는 물론 피로회복기능의 바이오 세라믹 복지가 나왔고 강철보다 강한 탄소섬유도 개발되어 섬유업계에 혁명의 바람이 거세게 일고 있다.

• Korean Journal of Environmental Biology
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• v.38 no.4
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• pp.733-743
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• 2020

We estimated the carbon storage of coal mines reclaimed using Betula platyphylla (BP), Pinus koraiensis (PK), and Pinus spp. (PS, Pinus densiflora, Pinus rigida, and Pinus thunbergii). The carbon storage of tree biomass (TB), forest floor(FF), mineral soil (MS), and the total forest were quantified. Reclaimed sites were located in Gangwon-do, Gyeongsangbuk-do, and Jeollanam-do; reclamation was conducted at various times in each region. The carbon storage (ton C ha^-1) in FF (BP: 3.31±0.59, PK: 3.60±0.93, PS: 4.65±0.92), MS (BP: 28.62±2.86, PK: 22.26±5.72, PS: 19.95±3.90), and the total forest(BP: 54.81±7.22, PK: 47.29±8.97, PS: 45.50±6.31) were lower than that of natural forests (NF). The carbon storage in TB was lower in BP (22.57±6.18) compared to NF, while those in PK(21.17±8.76) and PS (20.80±6.40) were higher than in NF. While there were no significant differences in the carbon storage of TB, FF, and the total forest among tree species, results from MS showed a significant difference among species. TB and the total forest carbon storages in all sites increased after reclamation. Soil pH and cation exchange capacity values in BP and PS were lower than in NF. Amounts of labile carbon, available phosphate, and microbial biomass carbon in reclaimed sites were less than half of NF. There are a number of methods that could increase the reclamation efficiency. Applications of lime or organic fertilizers, as well as tillage operations, may improve soil properties in reclaimed coal mines. Additionally, pruning and thinning would increase tree growth thereby increasing carbon storage.