Pub Date : 2023-02-28DOI: 10.11628/ksppe.2023.26.1.1
B. Kim, S. Suh, Wook Oh, S. Oh, Jae Hak Jung
Background and objective: An agrovoltaic system is a power generation method applying photovoltaics (PV) to crops cultivated on a farm. Usually, the PV system covers less than 30% of the upper surface of crops on the ground. If the PV system covers the upper layer of the crops, the yield will decrease by 15-20% due to the shading of the PV module. This study was carried out to investigate the effects of red supplemental light-emitting diode (LED) lighting under the PV system on growth and agronomic traits of green onions.Methods: To resolve the issue about decreasing yield, we constructed a 50 kW agrovoltaic system with the red (660 nm peak) LED dimming facility on the farm with 3 different plots for comparison. The 1st was PV + LED (two parts of dimming area: 3 hours and 6 hours). The second was only PV, and the last was a reference for comparison of yield (control plot). We transplanted uniform seedlings of green onions on three areas of the farm on June 23, 2020. We used red LED lighting for 3 hours and 6 hours after sunset and harvested green onions on October 25, 2020. We used less than 1% of electricity of total power generated by the agrovoltaic system for supplemental LED lighting.Results: The result of harvesting under the agrovoltaic system with 3 hours of lighting showed that there was 38% more yield than the control plot. We also discovered the optimal amount of supplemental LED lighting because even 6 hours of lighting were not better than 3 hours.Conclusion: Applying supplemental LED lighting after sunset can compensate for the yield decrease. The LED supplemental lighting for 3 hours is optimal for crop harvest. We expect that this system can be helpful to farmers who want to construct an agrovoltaic system.
{"title":"Growth and Agronomic Traits of Green Onion under the Agrovoltaic System with Red Supplemental LED Lighting","authors":"B. Kim, S. Suh, Wook Oh, S. Oh, Jae Hak Jung","doi":"10.11628/ksppe.2023.26.1.1","DOIUrl":"https://doi.org/10.11628/ksppe.2023.26.1.1","url":null,"abstract":"Background and objective: An agrovoltaic system is a power generation method applying photovoltaics (PV) to crops cultivated on a farm. Usually, the PV system covers less than 30% of the upper surface of crops on the ground. If the PV system covers the upper layer of the crops, the yield will decrease by 15-20% due to the shading of the PV module. This study was carried out to investigate the effects of red supplemental light-emitting diode (LED) lighting under the PV system on growth and agronomic traits of green onions.Methods: To resolve the issue about decreasing yield, we constructed a 50 kW agrovoltaic system with the red (660 nm peak) LED dimming facility on the farm with 3 different plots for comparison. The 1st was PV + LED (two parts of dimming area: 3 hours and 6 hours). The second was only PV, and the last was a reference for comparison of yield (control plot). We transplanted uniform seedlings of green onions on three areas of the farm on June 23, 2020. We used red LED lighting for 3 hours and 6 hours after sunset and harvested green onions on October 25, 2020. We used less than 1% of electricity of total power generated by the agrovoltaic system for supplemental LED lighting.Results: The result of harvesting under the agrovoltaic system with 3 hours of lighting showed that there was 38% more yield than the control plot. We also discovered the optimal amount of supplemental LED lighting because even 6 hours of lighting were not better than 3 hours.Conclusion: Applying supplemental LED lighting after sunset can compensate for the yield decrease. The LED supplemental lighting for 3 hours is optimal for crop harvest. We expect that this system can be helpful to farmers who want to construct an agrovoltaic system.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41605960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.11628/ksppe.2023.26.1.59
Hyunseok Lee
Background and objective: This study was conducted to investigate the effect of the cultivation environment of Allium microdictyon in forest cultivation on leaf growth characteristics and antioxidant activity.Methods: One-year seedlings of Allium microdictyon were planted in test sites with different elevations and slopes in a forest. Each test site was selected on the south-facing slope and north-facing slope each at 700 m and 500 m above sea level, and each test site was created within a straight-line distance of 200m. Leaf characteristics were investigated and antioxidant enzyme activity were measured from April to June the following year after planting.Results: The 500m sites reached the maximum leaf size about a week earlier than the 700m sites, and the maximum leaf area was doubled in the same periods and higher in the south-facing slope than the north-facing slope. In the south-facing slope in Misan-ri, where the growth was the fastest, the total nitrogen (T-N) in soil also showed a high content. Regarding the antioxidant activity according to the planting site and harvest time, there was little difference in superoxide dismutase (SOD), but catalase increased until the time of release and then decreased thereafter. Malondialdehyde (MDA), a measure of the degree of lipid peroxidation, decreased until the harvest date and then slightly increased.Conclusion: Based on the results of this study, it is possible to control the harvest date by adjusting the location environment such as the slope direction of the sites for forest cultivation of Allium microdictyon. Catalase and MDA tended to be proportional or inversely proportional depending on the harvest date, serving as most active indicators of change in physiological activity.
{"title":"Growth Characteristics of Allium microdictyon in Forest Cultivation","authors":"Hyunseok Lee","doi":"10.11628/ksppe.2023.26.1.59","DOIUrl":"https://doi.org/10.11628/ksppe.2023.26.1.59","url":null,"abstract":"Background and objective: This study was conducted to investigate the effect of the cultivation environment of Allium microdictyon in forest cultivation on leaf growth characteristics and antioxidant activity.Methods: One-year seedlings of Allium microdictyon were planted in test sites with different elevations and slopes in a forest. Each test site was selected on the south-facing slope and north-facing slope each at 700 m and 500 m above sea level, and each test site was created within a straight-line distance of 200m. Leaf characteristics were investigated and antioxidant enzyme activity were measured from April to June the following year after planting.Results: The 500m sites reached the maximum leaf size about a week earlier than the 700m sites, and the maximum leaf area was doubled in the same periods and higher in the south-facing slope than the north-facing slope. In the south-facing slope in Misan-ri, where the growth was the fastest, the total nitrogen (T-N) in soil also showed a high content. Regarding the antioxidant activity according to the planting site and harvest time, there was little difference in superoxide dismutase (SOD), but catalase increased until the time of release and then decreased thereafter. Malondialdehyde (MDA), a measure of the degree of lipid peroxidation, decreased until the harvest date and then slightly increased.Conclusion: Based on the results of this study, it is possible to control the harvest date by adjusting the location environment such as the slope direction of the sites for forest cultivation of Allium microdictyon. Catalase and MDA tended to be proportional or inversely proportional depending on the harvest date, serving as most active indicators of change in physiological activity.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42405752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.11628/ksppe.2023.26.1.47
Y. Yoo, Y. S. Roh, M. Roh
Background and objective: The objective of this study was to produce Asiatic hybrid lily with more than two flowers in one year starting from bulbils. This study was to force 'Beni no Mai' bulbils influenced by harvesting date, flower bud removal, and temperature manipulation and to evaluate dormancy and maturity by nuclear magnetic resonance imaging (NMRI) and carbohydrates analysis.Methods: In experiment 1, bulbils were harvested at 0-30 days after anthesis (DAA), and were divided into 7 stages. And, soluble monosaccharides and monosaccharide constituents of bulbils were analyzed. In experiment 2, flower buds of plants that flowered on 21 April were not removed or removed on 1, 13, and 25 April. Bulbils harvested were divided into four groups and planted after cold treatment. In experiment 3, bulbils received a sequential temperature (SEQ CD) treatments for three weeks at 2.5, 5.0, and 7.5°C, 1 week at 10, 12.5, and 15°C, and 3 weeks at 2.5, 5.0, and 7.5°C. In experiment 4, bulbils were harvested 0-70 DAA, and were subjected to spin-spin lattice relaxation time by NMRI.Results: The bulbils harvested at 30 DAA produced two flowers within 282 days, and were better in growth. The bulbils harvested at 30 DAA showed higher concentration of soluble glucose and lower concentration of non-cellulosic neutral glucose. Growth of bulbils removed flower buds before flowering were better than those of bulbils that flower bud was removed at anthesis and 13 Apr. However, the number of flowers of bulbils harvested from plants removed flower buds on 1 Apr. were less than 2. The SEQ CD treatment of 7.5°C/3W-15°C/1W-5°C/3W in bulbils could produce the plants with 2.2 flowers within 300 days after planting. When bulbils were harvested at 0-28 DAA, yellow color corresponding to T2 relaxation time of 15-20 ms was dominant, and bulbils harvested at 56-70 DAA showed T2 relaxation time of 35-50 ms and 50-100 ms.Conclusion: Considering the results of soluble carbohydrate content and T2 relaxation time of bulbils, it was found that the bulbils had a shallower dormancy and were more mature at 30-42 DAA than before 28 DAA. Also, when these bulbils were planted after SEQ CD treatment at 7.5°C/3W-15°C/1W-5°C/3W, plants with two or more flowers could be produced within one year.
{"title":"Production of Asiatic Hybrid Lily 'Beni no Mai' with More than Two Flowers within One Year from Bulbils Influenced by Development Stage, Flower Bud Removal, and Temperature Manipulation","authors":"Y. Yoo, Y. S. Roh, M. Roh","doi":"10.11628/ksppe.2023.26.1.47","DOIUrl":"https://doi.org/10.11628/ksppe.2023.26.1.47","url":null,"abstract":"Background and objective: The objective of this study was to produce Asiatic hybrid lily with more than two flowers in one year starting from bulbils. This study was to force 'Beni no Mai' bulbils influenced by harvesting date, flower bud removal, and temperature manipulation and to evaluate dormancy and maturity by nuclear magnetic resonance imaging (NMRI) and carbohydrates analysis.Methods: In experiment 1, bulbils were harvested at 0-30 days after anthesis (DAA), and were divided into 7 stages. And, soluble monosaccharides and monosaccharide constituents of bulbils were analyzed. In experiment 2, flower buds of plants that flowered on 21 April were not removed or removed on 1, 13, and 25 April. Bulbils harvested were divided into four groups and planted after cold treatment. In experiment 3, bulbils received a sequential temperature (SEQ CD) treatments for three weeks at 2.5, 5.0, and 7.5°C, 1 week at 10, 12.5, and 15°C, and 3 weeks at 2.5, 5.0, and 7.5°C. In experiment 4, bulbils were harvested 0-70 DAA, and were subjected to spin-spin lattice relaxation time by NMRI.Results: The bulbils harvested at 30 DAA produced two flowers within 282 days, and were better in growth. The bulbils harvested at 30 DAA showed higher concentration of soluble glucose and lower concentration of non-cellulosic neutral glucose. Growth of bulbils removed flower buds before flowering were better than those of bulbils that flower bud was removed at anthesis and 13 Apr. However, the number of flowers of bulbils harvested from plants removed flower buds on 1 Apr. were less than 2. The SEQ CD treatment of 7.5°C/3W-15°C/1W-5°C/3W in bulbils could produce the plants with 2.2 flowers within 300 days after planting. When bulbils were harvested at 0-28 DAA, yellow color corresponding to T2 relaxation time of 15-20 ms was dominant, and bulbils harvested at 56-70 DAA showed T2 relaxation time of 35-50 ms and 50-100 ms.Conclusion: Considering the results of soluble carbohydrate content and T2 relaxation time of bulbils, it was found that the bulbils had a shallower dormancy and were more mature at 30-42 DAA than before 28 DAA. Also, when these bulbils were planted after SEQ CD treatment at 7.5°C/3W-15°C/1W-5°C/3W, plants with two or more flowers could be produced within one year.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44261224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.11628/ksppe.2023.26.1.9
Sung-Ho Kil, Hyesong Park, Eunseok Lee, Jin-Young Kim, Ji-Woo Kim
Background and objective: To deal with recent issues such as climate change, rural aging, food security, and the Fourth Industrial Revolution, there is a growing interest in smart farms that can efficiently produce food with ICT. In response to the international issues, this study analyzed articles on smart farms published in international journals and KCI journals as well as Instagram hashtags through text mining and identified relevant research trends and public awareness.Methods: This study collected total 584 articles on smart farms from 2010 to 2021 and hashtags in Instagram posts uploaded in 2021. To improve the reliability of the analysis results, nouns were exclusively extracted from the abstracts and hashtags, and data preprocessing was performed by removing nouns that appear customarily and combining synonyms. After that, we analyzed frequency, degree centrality, betweenness centrality, and topic modeling.Results: The analysis results of words with high frequency and centrality by research data are as follows. KCI and international journal articles had a tendency to mainly focus on ICT system development for efficient operation of smart farms. However, KCI articles considered relevant policies to establish the technologies. On the other hand, international journal articles tended to conduct research on smart farms in a wider area of agricultural fields than KCI articles. The main topics on Instagram were diet food, rural migration, and urban agriculture. This result shows that healthy food, experiences, and education through smart farms are gaining public interest.Conclusion: Currently, there is insufficient analysis of research trends in smart farms. In this vein, this study has significance as it included academic trends and public awareness by considering both research articles and Instagram posts. We expect the results of this study to be used as useful data for decision making to set the research and policy directions required to advance smart farms in the future.
{"title":"The Analysis of Research Trends and Public Awareness of Smart Farms using Text Mining","authors":"Sung-Ho Kil, Hyesong Park, Eunseok Lee, Jin-Young Kim, Ji-Woo Kim","doi":"10.11628/ksppe.2023.26.1.9","DOIUrl":"https://doi.org/10.11628/ksppe.2023.26.1.9","url":null,"abstract":"Background and objective: To deal with recent issues such as climate change, rural aging, food security, and the Fourth Industrial Revolution, there is a growing interest in smart farms that can efficiently produce food with ICT. In response to the international issues, this study analyzed articles on smart farms published in international journals and KCI journals as well as Instagram hashtags through text mining and identified relevant research trends and public awareness.Methods: This study collected total 584 articles on smart farms from 2010 to 2021 and hashtags in Instagram posts uploaded in 2021. To improve the reliability of the analysis results, nouns were exclusively extracted from the abstracts and hashtags, and data preprocessing was performed by removing nouns that appear customarily and combining synonyms. After that, we analyzed frequency, degree centrality, betweenness centrality, and topic modeling.Results: The analysis results of words with high frequency and centrality by research data are as follows. KCI and international journal articles had a tendency to mainly focus on ICT system development for efficient operation of smart farms. However, KCI articles considered relevant policies to establish the technologies. On the other hand, international journal articles tended to conduct research on smart farms in a wider area of agricultural fields than KCI articles. The main topics on Instagram were diet food, rural migration, and urban agriculture. This result shows that healthy food, experiences, and education through smart farms are gaining public interest.Conclusion: Currently, there is insufficient analysis of research trends in smart farms. In this vein, this study has significance as it included academic trends and public awareness by considering both research articles and Instagram posts. We expect the results of this study to be used as useful data for decision making to set the research and policy directions required to advance smart farms in the future.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48525652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.11628/ksppe.2023.26.1.67
Mi Young Lee, Nam-shim Park
Background and objective: With the desire for a healthy life and healing amid the environmental changes caused by the global climate crisis, and the COVID-19 pandemic, people's interest in care farming (CF) is growing. Therefore, this study aims to derive implications for the revitalization of CF by empirically analyzing the relationship between the effects on the intention to participate in CF.Methods: A survey was conducted (June 16, 2022 - July 25, 2022) using a structured questionnaire targeting city residents in Seoul and the metropolitan area to identify their intention to participate in CF. For the collected data of 255 copies of the questionnaire finally selected here, basic statistical analysis, correlation analysis, reliability, factor analysis, regression analysis, and moderating effect verification were performed to verify hypotheses established based on the research model. The Jamovi statistical package was used.Results: The results of this study are as follows. First, self-leadership and perceptual factor had a significantly positive (+) effect on the intention to participate in CF. Second, farming experience and mentoring, which are pulling factors between self-leadership and intention to participate in CF, had a statistically significant moderation effect. Third, farming experience, which is one of the pull factors between perceptual factor and intention to participate in CF, had a statistically significant moderation effect, but mentoring did not.Conclusion: Based on the results, this study determined the causal relationship between self-leadership and perceptual factor as a determinant affecting urban residents' intention to participate in CF. In addition, the necessity of a policy and practical approach was suggested depending on the level of farming or mentoring experience by verifying the moderation effect of pull factors.
{"title":"A Study on the Effects of Urban Residents' Self-Leadership and Perception on their Intention to Participate in Care Farming","authors":"Mi Young Lee, Nam-shim Park","doi":"10.11628/ksppe.2023.26.1.67","DOIUrl":"https://doi.org/10.11628/ksppe.2023.26.1.67","url":null,"abstract":"Background and objective: With the desire for a healthy life and healing amid the environmental changes caused by the global climate crisis, and the COVID-19 pandemic, people's interest in care farming (CF) is growing. Therefore, this study aims to derive implications for the revitalization of CF by empirically analyzing the relationship between the effects on the intention to participate in CF.Methods: A survey was conducted (June 16, 2022 - July 25, 2022) using a structured questionnaire targeting city residents in Seoul and the metropolitan area to identify their intention to participate in CF. For the collected data of 255 copies of the questionnaire finally selected here, basic statistical analysis, correlation analysis, reliability, factor analysis, regression analysis, and moderating effect verification were performed to verify hypotheses established based on the research model. The Jamovi statistical package was used.Results: The results of this study are as follows. First, self-leadership and perceptual factor had a significantly positive (+) effect on the intention to participate in CF. Second, farming experience and mentoring, which are pulling factors between self-leadership and intention to participate in CF, had a statistically significant moderation effect. Third, farming experience, which is one of the pull factors between perceptual factor and intention to participate in CF, had a statistically significant moderation effect, but mentoring did not.Conclusion: Based on the results, this study determined the causal relationship between self-leadership and perceptual factor as a determinant affecting urban residents' intention to participate in CF. In addition, the necessity of a policy and practical approach was suggested depending on the level of farming or mentoring experience by verifying the moderation effect of pull factors.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46584061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.11628/ksppe.2023.26.1.35
V. Gangireddygari, I. Cho, Sena Choi, J. Yoon
Background and objective: Plant viruses are major obstacles to enhancing crop productivity in both agriculture and horticulture throughout the world, resulting in losses of several billion dollars every year. Controlling viruses is arduous, so agrochemicals are widespread. To minimize the usage of those, this study's objective was to assess bacterial cultures supernatants on pepper mild mottle virus (PMMoV) in chili pepper plants and identify its secondary metabolites.Methods: This 48-h grown Pseudomonas putida (PP) and Bacillus licheniformis (BL) cultures supernatants were foliar sprayed separately in chili pepper plants 24-h before PMMoV inoculation (T1), and 24-h before and after PMMoV inoculation (T2), 2wpi (week's post inoculation), the virus titer was determined by using a double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA), and the supernatants were extracted with ethyl acetate and concentrated by rota-evaporation before being analyzed in gas chromatography mass spectrometry (GC-MS).Results: The culture supernatants of PP and BL inhibit PMMoV by 43-47% in both the treatments (T1 & T2) compared to the control. The GC-MS chromatogram of two cultures of supernatants identified the molecules of cyclo (Pro-Val), cyclo (Pro-Leu), and cyclo (Phe-Pro). Commercial forms of these three molecules at three concentrations showed a hypersensitive response, ranging from 45-65% for PMMoV in Nicotiana glutinosa.Conclusion: The results revealed that supernatants of PP and BL-containing compounds have biological control of PMMoV in chili pepper plants.
{"title":"Inhibitory Activity of Pseudomonas putida and Bacillus licheniformis Supernatants on PMMoV in Chili Pepper","authors":"V. Gangireddygari, I. Cho, Sena Choi, J. Yoon","doi":"10.11628/ksppe.2023.26.1.35","DOIUrl":"https://doi.org/10.11628/ksppe.2023.26.1.35","url":null,"abstract":"Background and objective: Plant viruses are major obstacles to enhancing crop productivity in both agriculture and horticulture throughout the world, resulting in losses of several billion dollars every year. Controlling viruses is arduous, so agrochemicals are widespread. To minimize the usage of those, this study's objective was to assess bacterial cultures supernatants on pepper mild mottle virus (PMMoV) in chili pepper plants and identify its secondary metabolites.Methods: This 48-h grown Pseudomonas putida (PP) and Bacillus licheniformis (BL) cultures supernatants were foliar sprayed separately in chili pepper plants 24-h before PMMoV inoculation (T1), and 24-h before and after PMMoV inoculation (T2), 2wpi (week's post inoculation), the virus titer was determined by using a double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA), and the supernatants were extracted with ethyl acetate and concentrated by rota-evaporation before being analyzed in gas chromatography mass spectrometry (GC-MS).Results: The culture supernatants of PP and BL inhibit PMMoV by 43-47% in both the treatments (T1 & T2) compared to the control. The GC-MS chromatogram of two cultures of supernatants identified the molecules of cyclo (Pro-Val), cyclo (Pro-Leu), and cyclo (Phe-Pro). Commercial forms of these three molecules at three concentrations showed a hypersensitive response, ranging from 45-65% for PMMoV in Nicotiana glutinosa.Conclusion: The results revealed that supernatants of PP and BL-containing compounds have biological control of PMMoV in chili pepper plants.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48001697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.11628/ksppe.2022.25.6.545
Junghoon Ki, S. Lee, Yoonhee Ki
Background and objective: Gentrification generally refers to changes in residents or operators in neighborhoods by investment in capital, a phenomenon in which wealthy or young professionals replace existing residents or operators in socioeconomic terms. Although conducted mainly in capitalist cities, some studies dealt with socialist systems or state-led gentrification. We intended to demonstrate the gentrification in North Korean by examining the cases of the socialist system and state-led gentrification and looking at urban development and urban space restructuring in Pyongyang Metropolitan Area in North Korea.Methods: To build up methodological framework of the study, we reviewed previous literature that deals with gentrification in capitalist cities, socialist systems, and state-led planning. About the gentrification phenomenon in North Korea, we examined secondary data of North Korea refugee interviews with North Korea government documents and research papers about Pyongyang's building and real estate development. Then, we compared gentrification in capitalist cities, socialist systems (or state-led planning), and North Korea.Results: Gentrification in capitalist cities, socialist system and North Korea differs in their enabling conditions, gentrifying agents, gentrifiers, and processes. National and local governments, usually with the North Korea communist party, play a leading role as gentrifying agents through their public policy. In the gentrification processes, there is an increasing gap between rich and poor and spatial separation between them, especially when displaced households being pushed out of town in North Korea.Conclusion: Urban development and apartment construction in Pyongyang shows the possibility of developing into existing gentrification, and if the private sector that leads gentrification occurs and at the same time, spatial replacement by privileged or upper classes appears, it will be clear that it is a kind of gentrification under the command economy.
{"title":"Gentrification in the Command Economy: A Story of Pyongyang Metropolitan Area in North Korea","authors":"Junghoon Ki, S. Lee, Yoonhee Ki","doi":"10.11628/ksppe.2022.25.6.545","DOIUrl":"https://doi.org/10.11628/ksppe.2022.25.6.545","url":null,"abstract":"Background and objective: Gentrification generally refers to changes in residents or operators in neighborhoods by investment in capital, a phenomenon in which wealthy or young professionals replace existing residents or operators in socioeconomic terms. Although conducted mainly in capitalist cities, some studies dealt with socialist systems or state-led gentrification. We intended to demonstrate the gentrification in North Korean by examining the cases of the socialist system and state-led gentrification and looking at urban development and urban space restructuring in Pyongyang Metropolitan Area in North Korea.Methods: To build up methodological framework of the study, we reviewed previous literature that deals with gentrification in capitalist cities, socialist systems, and state-led planning. About the gentrification phenomenon in North Korea, we examined secondary data of North Korea refugee interviews with North Korea government documents and research papers about Pyongyang's building and real estate development. Then, we compared gentrification in capitalist cities, socialist systems (or state-led planning), and North Korea.Results: Gentrification in capitalist cities, socialist system and North Korea differs in their enabling conditions, gentrifying agents, gentrifiers, and processes. National and local governments, usually with the North Korea communist party, play a leading role as gentrifying agents through their public policy. In the gentrification processes, there is an increasing gap between rich and poor and spatial separation between them, especially when displaced households being pushed out of town in North Korea.Conclusion: Urban development and apartment construction in Pyongyang shows the possibility of developing into existing gentrification, and if the private sector that leads gentrification occurs and at the same time, spatial replacement by privileged or upper classes appears, it will be clear that it is a kind of gentrification under the command economy.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49638928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.11628/ksppe.2022.25.6.717
C. Youn, L. Chung, M. Kang, Sujin Kim, H. Choi, Juyoung Lee
Background and objective: Artificial environments have been known to negatively affect neuropsychological activities. Healthcare workers who are under high psychological and physiological stress often spend long hours at a time. Recently, many studies have been conducted to reveal the healing effects of natural environments, but few studies have been conducted on healthcare workers. Therefore, this study aims to investigate the effect of green walls in medical facilities on the hemodynamics of the prefrontal cortex in healthcare workers.Methods: Eleven healthy adults working in a medical institution participated in the experiment, in which they rested for 10 minutes in a room with green walls and in a control room. To compare the physiological and psychological changes between the green wall room and the control room, we used various measurements, such as near-infrared spectroscopy in the prefrontal area (NIRS), heart rate variability (HRV), blood pressure (BP), and pulse rate (PR). Psychological tests were also conducted using the Profile of Mood States (POMS), the State-Trait Anxiety Inventory (STAI), the Perceived Restorativeness Scale (PRS), and the Zucherman Inventory of Personal Reaction Scale (ZIPERS).Results: The oxyhemoglobin concentration in the frontal lobe significantly decreased on both the left and right sides in the green wall room compared to the control room. Green walls significantly activated the parasympathetic nervous system and inhibited the sympathetic nervous system compared to the control room. In addition, psychological reactions increased positive emotions and decreased negative emotions.Conclusion: Green walls in medical facilities could be an effective way to promote physiological relaxation and health by reducing physiological hemodynamics in the prefrontal cortex evoked by psychological stress in healthcare workers. This study implies that green walls can be used as an effective means of stress reduction and relaxation.
{"title":"Effects of Green Walls on Prefrontal Cerebral Hemodynamics in Hospital Workers","authors":"C. Youn, L. Chung, M. Kang, Sujin Kim, H. Choi, Juyoung Lee","doi":"10.11628/ksppe.2022.25.6.717","DOIUrl":"https://doi.org/10.11628/ksppe.2022.25.6.717","url":null,"abstract":"Background and objective: Artificial environments have been known to negatively affect neuropsychological activities. Healthcare workers who are under high psychological and physiological stress often spend long hours at a time. Recently, many studies have been conducted to reveal the healing effects of natural environments, but few studies have been conducted on healthcare workers. Therefore, this study aims to investigate the effect of green walls in medical facilities on the hemodynamics of the prefrontal cortex in healthcare workers.Methods: Eleven healthy adults working in a medical institution participated in the experiment, in which they rested for 10 minutes in a room with green walls and in a control room. To compare the physiological and psychological changes between the green wall room and the control room, we used various measurements, such as near-infrared spectroscopy in the prefrontal area (NIRS), heart rate variability (HRV), blood pressure (BP), and pulse rate (PR). Psychological tests were also conducted using the Profile of Mood States (POMS), the State-Trait Anxiety Inventory (STAI), the Perceived Restorativeness Scale (PRS), and the Zucherman Inventory of Personal Reaction Scale (ZIPERS).Results: The oxyhemoglobin concentration in the frontal lobe significantly decreased on both the left and right sides in the green wall room compared to the control room. Green walls significantly activated the parasympathetic nervous system and inhibited the sympathetic nervous system compared to the control room. In addition, psychological reactions increased positive emotions and decreased negative emotions.Conclusion: Green walls in medical facilities could be an effective way to promote physiological relaxation and health by reducing physiological hemodynamics in the prefrontal cortex evoked by psychological stress in healthcare workers. This study implies that green walls can be used as an effective means of stress reduction and relaxation.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47875022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.11628/ksppe.2022.25.6.571
Ho-Hyeong Yang, Min-Jung Kwak, Kwang-Jin Kim, Ho-Hyun Kim
Background and objective: Plants are a natural and environmentally friendly way to improve indoor air quality. To evaluate indoor air quality, it is important to continuously measure and identify the influencing factors. This study aimed to identify the factors affecting PM2.5 concentration in indoor spaces with indoor garden installations.Methods: Factors influencing the concentration of indoor, airborne PM2.5 were monitored based on Internet of Things (IoT) technology. Ten households in South Korea were surveyed and categorized into Groups A (households without an indoor garden) and B (households with an indoor garden). An IoT-based device was used to monitor the indoor PM2.5 concentration and several environmental factors, including the outdoor PM2.5 (µg⋅m-3) and carbon dioxide (mL⋅m-3) concentrations, temperature (°C), and relative humidity (%). Further, the seasonal (spring, summer, fall, and winter) and temporal (dawn, morning, afternoon, and evening) variations in indoor PM2.5 concentration were monitored.Results: The indoor PM2.5 concentration decreased from 17.7 µg⋅m-3 to 16.7 µg⋅m-3, and from 15.5 µg⋅m-3 to 12.5 µg⋅m-3 in Groups A and B, respectively. A regression analysis showed that the indoor PM2.5 concentration was not significantly affected by the installation of the indoor garden (living rooms: p = .1577; kitchen: p = .4974); however, was influenced by the outdoor air conditions, as well as seasonal and temporal factors. Additionally, a subgrouping model demonstrated a statistical relationship between indoor garden installation and the environmental factors.Conclusion: These findings can assist in establishing guidelines for indoor air quality management.
{"title":"Analysis of Factors Influencing Indoor PM2.5 and CO2 Concentrations in Households using IoT Technology after Indoor Garden Installation","authors":"Ho-Hyeong Yang, Min-Jung Kwak, Kwang-Jin Kim, Ho-Hyun Kim","doi":"10.11628/ksppe.2022.25.6.571","DOIUrl":"https://doi.org/10.11628/ksppe.2022.25.6.571","url":null,"abstract":"Background and objective: Plants are a natural and environmentally friendly way to improve indoor air quality. To evaluate indoor air quality, it is important to continuously measure and identify the influencing factors. This study aimed to identify the factors affecting PM2.5 concentration in indoor spaces with indoor garden installations.Methods: Factors influencing the concentration of indoor, airborne PM2.5 were monitored based on Internet of Things (IoT) technology. Ten households in South Korea were surveyed and categorized into Groups A (households without an indoor garden) and B (households with an indoor garden). An IoT-based device was used to monitor the indoor PM2.5 concentration and several environmental factors, including the outdoor PM2.5 (µg⋅m-3) and carbon dioxide (mL⋅m-3) concentrations, temperature (°C), and relative humidity (%). Further, the seasonal (spring, summer, fall, and winter) and temporal (dawn, morning, afternoon, and evening) variations in indoor PM2.5 concentration were monitored.Results: The indoor PM2.5 concentration decreased from 17.7 µg⋅m-3 to 16.7 µg⋅m-3, and from 15.5 µg⋅m-3 to 12.5 µg⋅m-3 in Groups A and B, respectively. A regression analysis showed that the indoor PM2.5 concentration was not significantly affected by the installation of the indoor garden (living rooms: p = .1577; kitchen: p = .4974); however, was influenced by the outdoor air conditions, as well as seasonal and temporal factors. Additionally, a subgrouping model demonstrated a statistical relationship between indoor garden installation and the environmental factors.Conclusion: These findings can assist in establishing guidelines for indoor air quality management.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46270435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.11628/ksppe.2022.25.6.703
SeonKyou Choi, Jinvo Nam, Min-Yeong Cho, Duri Kim
Background and objective: There have been an increasing number of migrant women in Korea. However, they are facing many difficulties in terms of language, psychology, poverty and many other things. Moreover, many mental health problems have emerged since COVID-19, to which migrant women have been more vulnerable. Alternatively, parks and green spaces have been a key to recovering mental health. In line with this, long-term management of green spaces has been raised as an issue to help promote people's health and empowerment. However, we have little evidence that the issue also conveys the empowerment of migrants and positivity through participation in park and green space management. Therefore, this study aims at 1) understanding migrant women's perception toward participation in park and green space management, 2) analyzing the correlation between empowerment and place-keeping, and 3) deriving implications.Methods: To address the objectives, this study conducts 1) a theoretical review of empowerment and place-keeping of migrant women through literature review and 2) a non-face-to-face survey targeting 108 migrant women. The collected data was analyzed using SPSS 26.Results: The results are as follows: 1) migrant women have highly positive perceptions toward participation in park and green space management, with statistical significance in funding and governance depending on the marital status, and 2) there is a significant correlation between place-keeping and empowerment in role and expression. This means that increasing the role and expression in empowerment can promote more active participation in park and green space management.Conclusion: In conclusion, in order to improve the empowerment of migrant women, they should be guided to actively participate in park and green space management and provided with the opportunity to participate in policy-making.
{"title":"A Study on an Understanding of Migrant Women's Empowerment and Their Perceptions Toward Participation in Park Management and Its Correlation","authors":"SeonKyou Choi, Jinvo Nam, Min-Yeong Cho, Duri Kim","doi":"10.11628/ksppe.2022.25.6.703","DOIUrl":"https://doi.org/10.11628/ksppe.2022.25.6.703","url":null,"abstract":"Background and objective: There have been an increasing number of migrant women in Korea. However, they are facing many difficulties in terms of language, psychology, poverty and many other things. Moreover, many mental health problems have emerged since COVID-19, to which migrant women have been more vulnerable. Alternatively, parks and green spaces have been a key to recovering mental health. In line with this, long-term management of green spaces has been raised as an issue to help promote people's health and empowerment. However, we have little evidence that the issue also conveys the empowerment of migrants and positivity through participation in park and green space management. Therefore, this study aims at 1) understanding migrant women's perception toward participation in park and green space management, 2) analyzing the correlation between empowerment and place-keeping, and 3) deriving implications.Methods: To address the objectives, this study conducts 1) a theoretical review of empowerment and place-keeping of migrant women through literature review and 2) a non-face-to-face survey targeting 108 migrant women. The collected data was analyzed using SPSS 26.Results: The results are as follows: 1) migrant women have highly positive perceptions toward participation in park and green space management, with statistical significance in funding and governance depending on the marital status, and 2) there is a significant correlation between place-keeping and empowerment in role and expression. This means that increasing the role and expression in empowerment can promote more active participation in park and green space management.Conclusion: In conclusion, in order to improve the empowerment of migrant women, they should be guided to actively participate in park and green space management and provided with the opportunity to participate in policy-making.","PeriodicalId":52383,"journal":{"name":"Journal of People, Plants, and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44061040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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