• 환경영향평가
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• 제14권4호
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• pp.147-155
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• 2005

This study was designed to investigate the effect of plant as a botanical air purification on the indoor pollution by formaldehyde. Three indoor plants such as Dracaena marhginata, Spathiphyllum and Dracaena reflexa, were placed in the artificially contaminated reactor under laboratory condition. Both plant and soil effects on removal of formaldehyde from contaminated indoor air were observed. Reductions in the formaldehyde levels appeared to have been associated with soil medium factors as well as plant factors. The effect of soil on formaldehyde reduction was high in the early stage of the experiment and the results suggest that sorption could be more important factor than microbial degradation in the initial dissipation of contaminants in the soil. It was suggested that the effect of plant on formaldehyde reduction might be related to the plant species, total leaf surface area of plant, degree of contribution of soil medium, and exposed concentration level. The results of this study showed that air purification using plants is an effective means of reduction on indoor formaldehyde level, though, utilization of soil media with high sorption capacity and/or supplementary purifying aids were also suggested when the source is continuous or exposed concentration level is high.

• 한국대기환경학회지
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• 제14권6호
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• pp.537-544
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• 1998

We selected Spathiyhyllum patinii and Pachira aqkatica, since the former has high O3 absorption while the latter low absorption, and analyzed physiological factors such as diffusive coefficient, transpiration rate, photosynthetic rate, and CO2 absorption rate, which affected O3 absorption capacity There was significant relationship between gas absorption capacity and the other factors; photosynthetic rate, diffusive resistance, stomatal resistance and CO2 absorption rate. Therefore model formula for estimation of O3 absorption rate in plant was formulated by making use of these factors. There was difference for the estimation of O3 absorption rate according to plant species. In case of Spathiphyllum patinii, photosynthetic rate is an optimal factor for estimation of O3 absorption capacity. On the other hand, stomatal resistance and diffusive resistance are optimal factors of Pachira aquatica among various physiological ones. And we knew that CO2 absorption rate is a potential factor to evaluate gas absorption capacity regardless of plant species. But considering efficiency and practicality, diffusive resistance was the most effective factor for the estimation of O3 gas absorption.

• 한국환경과학회지
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• 제22권11호
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• pp.1499-1508
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• 2013

In the results of investigating the role of LED light quality in enhancing the ornamental value of indoor foliage plants, amber and red light increased plant height, leaf width, and leaf stalk, and the consequent tree shape decreased the ornamental value. The chlorophyll content increased significantly under white light and compound light. With regard to the effect of plant leaf color on ornamental value, the value of lightness was markedly enhanced by red light. As to the functionality of plants according to photosynthetic activity, plants such as Dieffenbachia, Clusia, and Dracaena were found favorable to those staying indoors for a longtime from morning to evening. Spathiphyllum, and Ficus were found to be recommendable for indoor spaces used actively during afternoon because their photosynthesis was activated in the afternoon. With regard to power consumption according to light quality, white light consumed 119 W/hour, around 45% lower than that of fluorescent lamps, so it is considered the optimal artificial light quality that can enhance energy efficiency. Red light consumed 72 W/hour, only 33% of that of fluorescent lamps, but it was not considered the optimal light quality because plant growth was poor under the light quality. White light and compound light were found to be the ideal light sources for improving the functionality and ornamental value of indoor plants and reducing the cost of maintenance, but because compound light hinders people from recognizing the original color of plants and makes their eyes easily tired, white light was considered the optimal light satisfying all of the ornamental value, economic efficiency and functionality resulting from plant growth.

• 한국환경복원기술학회지
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• 제6권3호
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• pp.1-8
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• 2003

This study was carried out in order to investigate of effects of environmental conditions which influence negative ions development. Negative ions are nature' most powerful air-cleaning agents, are created by nature, and found at their most optimal levels where the air is most pure and healthy. Negative ions are regarded as one of the important factors which indicate the quality of the air. Therefore, the focus of this study was to clear relationship among negative ions development induced by plant cultivar and environmental conditions such as air temperature, light intensity and relative humidity. As the results of this study, it was found that negative ions development was promoted during the period with plants compared to the period without plants. In Particular, negative ions development was high under air temperature $20^{\circ}C$, relative humidity 90% and dark condition. Temperature and humidity factors on this experiment was strongly affected on negative ions development, but light intensity had almost slight effect. It was shown that these results can contribute to the application of environmental control techniques to negative ions. Among plant cultivar of Spathiphyllum spp. Mentha spicata, and Cupressu arizonica, Mentha spicata was higher negative ions than the other plants, and also the leaves were higher than the stems and roots. The effect of plants on the perception of the inte끼r air quality may, therefore, be one explanation of this results about negative ions. on the other hand, it seems that a green indoor environment might be an increase in general well-being due to the plants.

• 원예과학기술지
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• 제31권2호
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• pp.153-158
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• 2013

본 실험은 인공배지가 담긴 용기에서 재배되는 6가지 분식물의 지상부와 지하부에 흡수된 규소의 양과 각 양액에 첨가된 규소의 농도에 따른 흡수 경향을 구명하고자 수행되었다. 화훼농가에서 주로 재배되고 있는 분식물 중에서 국화, 스파티필럼, 칼랑코에, 아이비, 카네이션, 그리고 포인세티아를 선정하고 균일한 묘를 선별하여 350mL 마젠타 박스에서 재배하면서 $K_2SiO_3$를 이용하여 Si를 0, 2.7 또는 5.4mM 농도로 첨가하였다. 각 마젠타 박스에 에어펌프에 1m 길이의 polyethylene 튜브를 연결하여 전체 실험기간 동안 $2L{\cdot}h^{-1}$(노즐당 $143mL{\cdot}h^{-1}$)로 양액에 통기하면서 재배하였다. 양액의 EC는 $1.5mS{\cdot}cm^{-1}$로, pH는 5.6으로 실험 시작 전에 조정하였다. 모든 환경 조건이 동일한 조건에서 재배한 작물을 15일째에 수확하여 지하부와 지상부의 규소 함량을 몰리브덴청법을 이용하여 측정하였다. 이를 바탕으로 규소 흡수 정도와 농도에 따른 규소 함량 변화를 알아보기 위해 단순회귀분석을 통해 검정하였으며, 양액 내에 남아 있는 규소 함량은 ICP-AES을 이용하여 측정하였다. 6가지 분식물 중 지하부의 규소 함량은 카네이션에서 가장 높고 포인세티아에서 가장 낮았다. 그리고 지상부의 규소 함량은 카네이션에서 가장 높았고 칼랑코에에서 가장 낮았다. 지상부와 지하부를 합친 식물체의 총규소 함량은 포인세티아, 칼랑코에 및 국화 는 규소 흡수 정도가 낮았고, 스파티필름은 중간 그리고 아이비와 카네이션은 높게 나타났다. 본 연구의 결과에서 규소 흡수 정도는 식물마다 달랐고 회귀분석이 식물에 따라 다양하게 나타났다.

• 한국환경과학회지
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• 제21권5호
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• pp.633-640
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• 2012

White light and compound light were found to be the ideal light sources for improving the functionality and ornamental value of indoor plants and reducing the cost of maintenance, but because compound light hinders people from recognizing the original color of plants and makes their eyes easily tired, white light was considered the optimal light satisfying all of the ornamental value, economic efficiency and functionality resulting from plant growth. On the other hand, in the results of examining physiological changes before and after treatment on fine dust PM10 and carbon dioxide removal capacity in a closed chamber under an artificial light source, the patterns of carbon dioxide and fine dust removal were similar among the treatment groups according to light condition, but according to plant type, the removal rate per unit leaf area was highest in $Spathiphyllum$ and lowest in $Dieffenbachia$. In the experiment on dust and carbon dioxide removal, the photosynthetic rate was over 2 times higher after the treatment, and the rate increased particularly markedly under compound light and white light, suggesting that the photosynthetic rate of plants increases differently according to light quality. These results show that light quality has a significant effect on the photosynthetic rate of plants, and suggests that plants with a high photosynthetic rate also have a high carbon dioxide and dust removal capacity. In conclusion, the photosynthetic rate of foliage plants increased under white and blue light that affect photosynthesis and the increased photosynthetic rate reduced carbon dioxide and fine dust, and therefore white and compound light were found to be the optimal light sources most functional and economically efficient in improving ornamental value and indoor air quality.

• 한국조경학회지
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• 제45권4호
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• pp.1-10
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• 2017

연구는 벽면녹화 및 벽천시스템이 없을 때를 대조구로 하여, 벽면녹화시스템 1개(Case 1), 벽면녹화시스템 2개(Case 2), 벽면녹화시스템 2개와 벽천시스템(Case 3)의 4가지 조건별 실내 온 습도 조절 및 입자상 오염물질인 PM1와 PM10 제거효과를 구명하고자 수행하였다. 실험은 충북대학교 내의 사무실에서 2015년 8월부터 9월까지 약 2개월 동안 대조구, Case 1, Case 2, Case 3 순으로 순차적으로 진행하였고, 실험기간 동안 외기온도가 비교적 일정했던 2015년 8월 17~20일(반복 실험 1), 8월 31일~9월 3일(반복 실험 2)의 데이터를 이용하여 분석하였다. 실내조경 설치에 따른 식물의 용적비는 대조구, Case 1, Case 2, Case 3이 각각 0, 0.6, 1.2, 1.4%였다. 대조구와 비교하여 Case 1, Case 2, Case 3의 평균온도는 각각 0.3~0.7, 0.7~0.9, $1.0^{\circ}C$가 감소되었으며, 평균상대습도는 각각 1.8~8.7, 9.2~14.6, 14.8~21.9%로 상승하는 경향을 보였다. 오염원 주입 후 300분이 경과하였을 때, 대조구, Case 1, Case 2, Case 3의 PM1 잔존비율은 반복 실험 1의 경우에는 각각 25.0, 22.0, 21.2, 17.3%이었으며, 반복 실험 2에서는 42.3, 28.9, 23.1, 30.9%로 나타났다. PM10 잔존비율은 반복 실험1에서는 각각 13.8, 10.8, 12.5, 9.2%이었으며, 반복 실험 2에서는 각각 24.5, 15.3, 12.6, 14.8%로 나타났다. 실내녹화 면적이 증가함에 따라 실내 온도와 PM1, PM10의 저감효과는 컸으며, 습도는 온도와 음(-)의 상관관계를 보였다. PM1과 PM10은 상대습도가 높을수록 빨리 감소되는 경향을 보였다.