식물의 실내 이용이 늘어나면서 새롭게 도입되고 있는 수직녹화시스템에 적합한 양액 관리 방법을 구명하고자 본 연구를 수행하였다. 스킨답서스(Epipremnum aureum)와 스킨답서스 ‘라임’(E. aureum ‘Lime’)을 식물재료로 하여 실내 광도를 광합성유효방사속(photosynthetically active radiation, PAR) 1(무보광처리), 20, 40, 80μmoL • m−2 • s−1 로 하루 12시간씩 보광 처리하였고, 이때 양액 농도는 무 처리구(수돗물, EC 0.1)와 Hoagland 양액을 이용하여 0.5, 1.0, 1.5dS • m−1로 처리하였다. 실내저광조건에서 스 킨답서스의 엽면적이 스킨답서스 ‘라임’보다 1.5배, 건물 중이 2배 높아 상대적으로 스킨답서스의 생장이 더 양 호하였다. 두 품종 모두 보광을 하지 않은 PAR 1 처리 구에서 생체중과 건물중이 현저히 낮았으며, 실내 광도 를 2배 증가시켰을 때 건물중은 1.4배 증가하였다. 양액 공급을 하지 않을 경우, 오히려 보광이1/2인 저광조건에 서 양액공급을 했을 때 엽면적 2배, 루비스코 활성도는 1.9 ~ 2.3배, 건물중 역시 1.5 ~ 2배 증가했다. 따라서 적 정한 농도의 양액의 공급은 식물의 생장과 생리 활성에 효과적임을 알 수 있었다. 이와 같이 식물생장에 불리한 실내 저광도 조건을 적정농도의 양액공급으로 보상할 수 있었으며, 본 실험을 통해 실내수직녹화시스템에서 보광 과 함께 적정한 양액 관리가 필요함을 확인하였다.

커피나무를 실내분화로 개발할 목적으로 광도에 따 른 생육반응과 겨울철 온도관리에 대한 실험을 수행한 결과는 다음과 같다. 50% 차광망으로 0~3겹까지 차광 하여 생육을 조사한 결과, 1겹과 2겹에서 생육이 가장 양호하고 엽색도 진한 녹색이며 잎에 광택이 있어 관 상가치도 가장 높은 것으로 나타났다. 3겹 차광에서는 엽색은 진하나, 생육이 지나치게 억제된 결과를 보였으 며, 무차광에서는 엽색이 탈색되고 생육도 현저하게 저 하되었다. 겨울철에 최저 온도를 5, 10, 15, 20oC로 설정하고 커피나무를 관리한 결과, 15oC 이상에서 정 상적인 생육이 가능했으며, 엽색도 진한 녹색으로 관상 가치가 높게 나타났다. 그러나 10oC에서는 생육이 현 저하게 저하되었고, 5oC에서는 생육저하뿐 아니라 일 부 개체는 저온피해로 고사되었다. 따라서 커피나무를 분화로 재배하고자 할 때는 50% 차광망으로 2겹이 가장 좋으며, 겨울철 야간 최저 온도는 15oC이라고 판단되었다.

This study aimed to analyze the growth and physical responsees of Dracaena braunii in response salt accumulation in ornamental water culture and to examine the effect of activated carbon on this growth response. The experiment was conducted in a plant growth chamber and the indoor environmental conditions of the chamber were set at 23 ± 1℃ temperature, 70 ± 3% humidity, and 1,000 lux brightness. The observation of the growth response of plants in the presence of activated carbon showed that the pH with activated carbon maintained sub-acidic to neutral (6.27∼7.32) conditions and showed decreased electric conductivity in the media. As the treatment with added activated carbon showed good growth and physical responses, this indicated that absorption effect of activated carbon had a positive influence on the growth of plants. However, as the absorption effect of activated carbon may decrease over time and the use of high concentrations of activated carbon might cause nutrition shortage, various concentration of activated carbon and their absorption effects need to be investigated in the future.

문명의 발전과 산업화된 경제 구조, 인구의 밀집 현상이 두드러진 도시는 무분별한 개발로 인해 녹지 환경이 턱없이 부족하고 대기의 질은 나 날이 악화되고 있다. 더구나 지구 온난화로 인한 전반적인 자연환경의 변화로 인해 대륙의 사막화는 점점 가속도를 내고 있으며 이웃한 중국의 산업화 과정에서 발생되는 미세먼지는 어떠한 안전장치도 없이 국내로 무차별적으로 유입되고 있다. 대기의 오염으로 외부 공기로 환기를 시 키는 것이 더 이상 안전할 수가 없고 사람들이 실내공간에 머무르는 시간이 많아짐에 따라 식물을 매개체로 하는 복지원예사가 다양한 프로그 램에 도입한 식물의 공기정화능력을 알리고 이를 적극적으로 현장에 반영해보고자 실내식물의 선호도와 인식조사를 20~60대 성인 100인을 대상으로 NASA(National Aeronautics and Space Administration)가 선정한 실내 공기 정화식물 50종의 사진을 제시하여 조사하였다 가정 내 가장 많이 보유하고 있는 식물은 상위는 산세베리아>인도고무나무>헤데라>행운목>스파티필>쉐프렐라홍콩야자>아레카 야자> 관음죽>벤자민 고무나무 순이었고, 향후 구입 의사가 높은 식물은 행운목>산세베리아>인도고무나무>아레카 야자>안스리움>벤자민 고 무나무>관음죽> 대나무 야자-세이브리지>알로에베라>스파트필름 이었다. 실내식물을 구입할 때 우선적으로 고려하는 사항으로는 유해 물질 제거능력>재배 관리의 용이성> 미관상의 아름다움이나 향> 가격 이었다. 실내 식물이 미치는 영향은 정신건강 3.18점(5점만점), 실 내환경 3.25(5점만점)으로 정신건강보다는 실내환경에 영향을 미치는 것으로 조사되었다. 이러한 조사 결과를 바탕으로 복지 원예사가 프로그램을 개발하고 진행할 때 식물 선택에 있어 식물이 가진 환경 정화기능과 인간의 심신 에 끼치는 영향에 대한 이해를 잘 전달될 수 있도록 프로그램을 개발하여야 할 것이다. 녹색식물을 쉽게 접할 수 있게 되어 정서적인 안정감 과 편안함을 회복함은 물론이고 보다 개선된 환경을 고루 누릴 수 있기를 기대한다. 현대를 사는 우리가 당면한 대기오염 문제와 피폐한 정 신을 복원하기 위해서 이제 실내식물은 선택이 아니라 필수가 되어야 할 것을 제언하는 바이다.

The study was surveyed to 269 respondents for investigating psychological response to indoor foliage plants grouped by four type of design materials. 21 indoor foliage plants grouped as filler, mass, form, and line plant, are shown to each respondent for surveying the preference and emotion by SD (semantic differential) scale. It was statically significant that the filler plant group was the least preferred one between the indoor foliage plant and the preference of line plant group was the highest. In filler plant Scindapsus aureus is significantly favored, in mass plant Aglaonema crispum and Syngonium podophyllum, in form plant Ficus banghalensis in line plant Dracaena fragrans ‘Lemon Lime’, respectively. The green is the most preferred color of leaf and gray is the least one. When investigated on the major emotions felt with four types of indoor foliage plant with SD scale, filler plant felt as ‘Bright’, ‘Light’, ‘Pale’, mass plant ‘Warm’, ‘Sharp’, form plant ‘Simple’, ‘Luxurious’ and line plant ‘Sophisticated’, ‘Luxurious’, ‘Pleasant’, ‘Soft’ and ‘Fancy’, respectively. This result will be valuable when the indoor garden is designed with an indoor foliage plant.

This study was performed to grasp the introduction of Korean wild evergreen broad-leaved tree, Ternstroemia gymnanthera, as a plant of indoor garden, and to figure out the light-adaptability under the four types indoor lighting and to provide the introduction plan. The experimental plants, Ternstroemia gymnanthera was purchased from the farmhouse in Jeju-do as a year plant, and it was experimented after the acclimation in the glass-green house of general farm of Gyeongnam National University of Science and Technology for 40 days. The experiment was performed for 1 year more from September 10, 2014 to September 30, 2015. The results of the experiment are as follows. When Ternstroemia gymnanthera is introduced as a plant of the indoor garden, the optical fiber, fluorescent lamp, and LED light in order are suitable to introduce as the proper lighting. In the case of the three-wave light, the growth and development was the worst among the 4 introduced lighting systems, therefore, the growth of Ternstroemia gymnanthera under the three-wave light was incongruous generally. The withering appearance was existed seriously by 500lux. Some leaves were fallen off, but generally smooth growth and development was done in the range of the 1,000lux to 2,000lux. The best intensity for the growth was under the condition of the 1,000lux. When the fluorescent lamp, and LED light are introduced, the most proper luminous intensity is the 2,000lux. When the optical fiber is introduced, the most efficient intensity is the 1,000lux. Generally the smooth growth and development is done under the more luminous intensity. As the result, the wild Ternstroemia gymnanthera is the species of tree to substitute the Ficus benghalensis, or Ficus retusa which is the foreign species, as a central tree or upper tree as well as pot tree, and it is expected to introduce sufficiently as a plant of the indoor garden.

The final goal of this research is to develop a botanical biofiltration system, which combines green interior, biofiltering, and automatic irrigation, which can purify indoor air pollutants according to indoor space and the size of biofilter. The biofilter used in this experiment was designed as an integral form of water metering pump, water tank, blower, humidifier, and multi-level planting space in order to be more suitable for indoor space utilization. This study was performed to compare indoor air quality between the space adjacent to a botanical biofilter and the space away from the biofilter (control) without generation of artificial indoor air pollutants, and to evaluate plant growth depending on multiple floors within the biofilter. Each concentration of indoor air pollutants such as TVOCs, monoxide, and dioxide in the space treated with the biofilter was lower than that of control. Dracaena sanderiana ‘Vitoria’ and Epipremnum aureum ‘N Joy’ also showed normal growth responses regardless of multiple floors within the biofilter. Hence, it was confirmed that the wall-typed botanical biofilter suitable for indoor plants was effective for indoor air purification.

Formaldehyde is a typical indoor air pollutant that has numerous adverse health problems in modern living conditions. Phytoremediation that use plants to remove contaminants from polluted media can be applied to improve indoor air quality. Two sets of experiments; 1) two rooms in newly built auditorium and 2) a bed room in 2-year-old apartment; were performed to investigate plant effects on indoor formaldehyde concentration. It was observed from the experiments that plant can help decontaminating formaldehyde at low concentration level (0.1 ppm) but the effects decreased considerably at high concentration (1ppm). The purification effects of indoor plant also showed the periodic pattern due to its physiological activity. More purification was observed as increasing plant density in the bed room but the formaldehyde concentration returned the original concentration level in two days after removing plants. It was suggested from the results that air purification using plants is an effective means of reduction on indoor formaldehyde level, though, reduction of source is highly desirable when the concentration level is high. The results also suggest that introducing supplementary purifying aids and/or efficient ventilation could be considered due to periodic removal pattern of plant.