• 한국환경교육학회지:환경교육
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• 제21권2호
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• pp.68-79
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• 2008

This study investigated undergraduate students' perceptions and mental models of the environment. A total of 192 students were sampled from a university of Gyoungbuk area. The environmental task was administrated to students drew a picture of an environment and explained their drawing. The results are as follows: First, a majority of undergraduate students perceived an environment from a comfortable environment. Second, five mental models emerged from a content analysis of students' responses about environmental drawing. Third, the dominant model was mental model 4, the environment as a place where animals, plants, and humans live. This means that the majority of students perceived a 'relation' rather than 'objects' views of the environment. Therefore, undergraduate students' conceptualizations about environment depends on a view or mental models of the environment which places humans in a sustaining relationship with the environment and its natural resources. The implications of these findings for environmental education are discussed.

• 한국환경복원기술학회지
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• 제5권2호
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• pp.1-8
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• 2002

The aim of this study was to generate systemic data for the aquatic plant distribution according to water depth and crossing slope in the shoreline. The results of this study were as follows; 1. Anxiety to 0 near area Bidens frondosa, Scirpus tabernaemontani, Carex dispalata etc. total class 21 observe, and Phragmites communis, Iris pseudoacorus etc. class 6 of anxiety 0-70cm extent examined. Class 21 of anxiety observed all such as Bidens frondosa, Scirpus tabernaemontani, Carex dispalata in near area to 0, and Phragmites communis, Iris pseudoacorus etc. class 6 of anxiety 0-70cm extent examined. Anxiety 70-100cm extent Nymphoides indica, Ttapa japonica etc.. class 2 appeared to line Zizania latifolia, Typha angustata back 2 papers, 130cm and examined that Nelumbo nucifera was limit anxiety state 230cm. 2. Aquatic plants of Phragmites communis, Zizania latifolia, Typha angustata etc. range mainly to gentle gradient of slant 10 degree low and distribution pattern was ranging by Zizania latifolia, Typha angustata, Phragmites communis period of ten days from deepwater place. Nelumbo nucifera was forming become independent stock keeping away invasion of plant that ability to breed was different because was prosperous. Slant 10 bores was growing near sleep in been strange steep slope earth and distribution of emerged plant appeared punily and emerged plant and swampy land plant were ranged extensively in gentle gradient of 10 degree low. 3. On lake surrounding plant when wish to do distribution of natural conditions reference need to. That is, gentle gradient and distribution form of steep slope earth are different, and same pitch must consider enough this because appear as distribution, distribution according to that some plant species were growing was different.

• Molecules and Cells
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• 제39권6호
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• pp.447-459
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• 2016

Many studies have been conducted to understand plant stress responses to salinity because irrigation-dependent salt accumulation compromises crop productivity and also to understand the mechanism through which some plants thrive under saline conditions. As mechanistic understanding has increased during the last decades, discovery-oriented approaches have begun to identify genetic determinants of salt tolerance. In addition to osmolytes, osmoprotectants, radical detoxification, ion transport systems, and changes in hormone levels and hormone-guided communications, the Salt Overly Sensitive (SOS) pathway has emerged to be a major defense mechanism. However, the mechanism by which the components of the SOS pathway are integrated to ultimately orchestrate plant-wide tolerance to salinity stress remains unclear. A higher-level control mechanism has recently emerged as a result of recognizing the involvement of GIGANTEA (GI), a protein involved in maintaining the plant circadian clock and control switch in flowering. The loss of GI function confers high tolerance to salt stress via its interaction with the components of the SOS pathway. The mechanism underlying this observation indicates the association between GI and the SOS pathway and thus, given the key influence of the circadian clock and the pathway on photoperiodic flowering, the association between GI and SOS can regulate growth and stress tolerance. In this review, we will analyze the components of the SOS pathways, with emphasis on the integration of components recognized as hallmarks of a halophytic lifestyle.

• 한국잡초학회지
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• 제14권4호
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• pp.233-238
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• 1994

올방개 괴경(塊莖) 눈의 맹아특성(萌芽特性), 중경(中莖)과 뿌리위치(位置)의 변화(變化) 및 재생력(再生力) 등을 구명하여 방제약제개발(防除藥劑開發) 및 사용기술(使用技術)에 관한 기초자료(基礎資料)를 제공(提供)하기 위하여 1993년 실내(室內) 및 온실시험(溫室試驗)을 수행하여 다음과 같은 결과(結果)를 얻었다. 1. 대부분(大部分)의 괴경(塊莖)은 보통 1개의 눈만 맹아(萌芽)하고 앞의 눈이 제거(除去)되면 다음 눈이 순차적으로 맹아(萌芽)하는 정아우세성(頂芽優勢性)과 2개 이상의 중경(中莖)이 동시(同時)에 신장(伸長)하지 않는 경합관계(競合關係)가 인정(認定)되었다. 2. 제초제(除草劑)(pyrazosulfuron)처리(處理)에 의해서 정아(頂芽)는 전부 고사(枯死)하였으나 제1, 제2측아(側芽)는 각각 50%와 90%가 생존(生存)하였으며 제3측아(側芽)는 거의 맹아(萌芽)하지 않는 상태(狀態)로 생존(生存)하였다. 3. 토양(土壤) 10-15cm의 심층(深層)에 있는 괴경(塊莖)은 2-5cm 깊이의 표층(表層)에 있는 괴경(塊莖)에 비하여 1주일(週日) 늦게 출현(出現)하였고 출현율(出現率)도 35% 정도 낮았다. 4. 심토(深土)에서 발생(發生)하는 올방개일수록 중경(中莖)과 근부위치(根部位置)가 깊어지므로 발생(發生)깊이에 따라 약제반응(藥劑j反應)이 달라질 수 있었다. 5. 토양(土壤) 10cm와 15cm 깊이의 심층(深層)에서 발생(發生)할 경우(境遇) 중경신장(中莖伸長)이 정지(停止)되어 출현(出現)하지 못한 괴경(塊莖)의 비율(比率)이 각각 25%와 30%로서 심층(深層) 경(莖)의 출현율(出現率)이 낮았다. 6. 식물체(植物體)에서 늦게 떼어낸 괴경(塊莖)일수록 재생(再生)이 늦었으나 초장(草長) 20cm(줄기 6-9개)일 때 떼어낸 괴경(塊莖)일지라도 약 2주후(週後)에는 모두 재생(再生)하였다.

• 한국응용곤충학회지
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• 제52권3호
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• pp.185-191
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• 2013

제주지역 노지감귤에서 2007년부터 볼록총채벌레 Scirtothrips dorsalis Hood에 의한 피해가 증가하고 있으나 시기별 발생특성에 관한 연구는 명확하지 못한 실정이다. 본 연구에서는 감귤원 주변에 분포하고 있는 볼록총채벌레의 기주식물 종류와 이와 연관된 발생특성을 구명하였다. 감귤원 주변에서 조사된 볼록총채벌레의 기주식물은 수목류 23과 39종, 초본류 10과 15종으로 총 32과 54종이었다. 조사된 기주식물 중 볼록총채벌레 제1세대 발생과 관련된 것은 인동덩굴과 사위질빵, 송악, 아왜나무였으며, 이들 식물에 월동성충이 3월 하순~4월 상순에 산란하여 성충이 4월 하순~5월 하순에 발생되는 것으로 추정되었다. 감귤 피해와 관련된 기주식물은 예덕나무와 동백나무 그리고 사위질빵, 계요등, 거지덩굴 같은 덩굴성 식물이었다. 황색끈끈이트랩을 감귤나무와 감귤원 경계에 설치하여 볼록총채벌레의 시기별 발생밀도를 조사한 결과 비슷한 발생양상을 보였으며, 연간 7세대를 경과하는 것으로 추정되었다. 감귤 열매에 피해를 주는 시기는 6월 하순~7월 상순과 8월 하순~9월 상순으로 어린 열매와 성숙 초기 2회에 걸쳐 피해를 주며, 이는 각각 볼록총채벌레 제 3세대와 제 6세대 성충 발생 최성기와 일치하였다. 볼록총채벌레 발생밀도는 기주식물의 새순 발생량에 따라 차이가 컸으며, 감귤원 주변 기주식물에서 번식한 후 감귤나무로 이동하여 피해를 주는 것으로 나타났다.

• 환경영향평가
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• 제21권5호
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• pp.725-734
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• 2012

The outbreak of foot and mouth disease in November 2010 raised many social, economic and environmental issues and water contaminations by leachate from carcass disposal sites particularly emerged as a serious concern. In oder to efficiently handle these problems, a critical method is required to transport leachate to livestock manure and sewage treatment plants and purify it. This study aims to present the best applicable method to transport leachate from carcass disposal sites into livestock manure and sewage treatment facilities. We investigated the biological and chemical characteristics such as BOD, COD, SS, TN, TP and Total coliforms. Current conjugated treatments in livestock manure and sewage treatment plants was studied by surveying the operations of those facilities. The NIER-MASS(National Institute of Environmental Research - Mass Balance Evaluation System of Sewage Treatment Facilities) program was applied to present the best conjugated treatment method through estimating the maximum daily load to meet the water quality standards in effluent.

• 한국환경과학회지
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• 제19권2호
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• pp.229-236
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• 2010

As air pollution has emerged as one of the most pressing urban environmental concerns, many studies have investigated the influence of air pollutants(ex: $O^3$, $NO^2$, $SO^2$, Acid rain, etc.) on roadside trees and urban grove. In Korea, population density started to increase since the industrialization. Since dense population aggravates our living conditions, it's very important for us to preserve and keep a lively and refreshing nature in order to live with green nature in harmony under the current artificial environment-dominating world. In metropolitan cities, the production of pollutants increases in proportion to population growth. The vehicle exhaust gas and air pollutants from cooling and heating systems have been the major causes of acid rain. Furthermore, tire particles which are naturally produced by tire wearing on roads and other toxic substances in exhaust gas have caused a problem in human health directly and indirectly. In fact, a lot of studies have analyzed air pollution, roadside trees and plants in Korea. However, they are mostly limited to covering the influence of air pollution on the growth of plants. No paper has clearly explained why air pollution-resistant or-vulnerable species has shown different reactions yet. Even though a lot of urban roadside trees have died or stopped to grow from time to time, this kind of problem has not been properly examined. This paper is aimed to comparatively analyze physio-ecological characteristic such as photosynthesis, chlorophyll contents, soil volume water figure out their relationship with environmental factors against the expanding roadside trees in Cheong-ju, and provide basic data for management of roadside trees and elaboration of urban environment preservation policies.

• 인간식물환경학회지
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• 제23권2호
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• pp.139-148
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• 2020

Urban problems raised by the concentration of population in urban areas have caused residents to migrate to other regions while causing other problems such as deteriorated infrastructure, traffic and environmental pollution problems in existing urban areas. As an alternative to improve this phenomenon, urban regeneration has emerged, and under the assumption that creating community vegetable gardens is effective in revitalizing cities considering their physical, social and cultural environment, frequency and descriptive analyses were conducted on the vegetable gardens in Jungnosong-dong, Wansan-gu, Jeonju-si, Jeollabuk-do, Korea to examine differences in the components of the surrounding environment and the settlement, and community spirit of the two groups comprised of 30 and 35 persons who did not and did participate in gardening respectively. Regression analysis were conducted to determine whether there were changes in community spirit after participating in gardening. As a component of the surrounding environment, gardening and fence management were found to be important for both the groups, and they seemed to have high satisfaction with their residence because they wanted to continue to live in their neighborhood. Overall, the satisfaction evaluation results showed that those who participated in gardening showed a higher satisfaction level than those who did not. Based on the changes in community spirit after participating in the activity, it was found that there was a high level of perception in all the components, indicating that the gardening had a positive effect on the cultivation of community spirit. As such, the spaces called vegetable gardens are not only for doing physical activities but also as shared conversation topics, and through the activities in the gardens, changes in the awareness of local residents can be brought about through the formation of social networks and natural communication between neighbors. It can be concluded that they encourage residents to actively participate in improving the urban environment through activities such as planting.

• 인간식물환경학회지
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• 제24권5호
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• pp.451-460
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• 2021

Background and objective: The prolonged COVID-19 pandemic has had significant impacts on mental health, which has emerged as a major public health issue around the world. This study aimed to analyze trends and network structure of 'grow-your-own (GYO)' through Instagram, one of the most influential social media platforms, to encourage and sustain home gardening activities for promotion of emotional support and physical health. Methods: A total of 6,388 posts including keyword hashtags '#gyo' and '#growyourown' on Instagram from June 13, 2020 to April 13, 2021 were collected. Word embedding was performed using Word2Vec library, and 7 clusters were identified with K-means clustering: GYO, garden and gardening, allotment, kitchen garden, sustainability, urban gardening, etc. Moreover, we conducted social network analysis to determine the centrality of related words and visualized the results using Gephi 0.9.2. Results: The analysis showed that various combinations of words, such as #growourrownfood, #growourrownveggies, and #growwhatyoueat revealed preference and interest of users in GYO, and appeared to encourage their activities on Instagram. In particular, #gardeningtips, #greenfingers, #goodlife, #gardeninglife, #gardensofinstagram were found to express positive emotions and pride as a gardener by sharing their daily gardening lives. Users were participating in urban gardening through #allotment, #raisedbeds, #kitchengarden and we could identify trends toward self-sufficiency and sustainable living. Conclusion: Based on these findings, it is expected that the trend data of GYO, which is a form of urban gardening, can be used as the basic data to establish urban gardening plans considering each characteristic, such as the emotions and identity of participants as well as their dispositions.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 추계국제학술대회
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• pp.63-63
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• 2020

Rice stripe virus (RSV) disease is one of the major constraints in rice production, transmitted by the small brown planthopper (SBPH; Laodelphax striatellus). Upon RSV infection, plants develop typical symptoms, which include chlorosis and weakness of newly emerged leaves, white and yellow spots, stripe on leaves, and necrotic and wilting leaves, resulting in plant growth inhibition, oxidative damage that may culminate in programmed cell death (PCD) and plant death in severe epidemics. Although RSV-resistant quantitative trait loci (QTLs), Stv-a, Stv-b, and Stv-bi, were mapped using various resistant varieties, one RSV-resistant gene, OsSOT1, has been identified so far. In this study, we used the rice cultivar Zenith, known to carry Stv-b, to investigate novel RSV-genes through fine mapping. Therefore, we crossed Zenith (Donor parent, RSV resistant) with Ilpum (Recurrent parent, RSV susceptible) to fine-map using a BC₂F₂ population of 2100 plants. Chromosome segment introgression lines that were heterozygous at a different region were selected, two types of heterozygous lines showed an heterozygous genotype between Sid2 and Sid75 to Indel9 and RM6680. Interestingly, we identified qSTV11^Z region harboring Stv-b, covering about 171-kb region between the InDel markers Sid75 and Indel8. The localization of qSTV11^Z provides useful information that could be used for marker-assisted selection and determination of genetic resources in rice breeding.