직접무게측량을 통한 한국 가정의 음식쓰레기 특성 분석

바실아델러둔 ( Bashir Adelodun ),조건호 ( Gun Ho Cho ),김상현 ( Sang Hyun Kim ),이슬기 ( Seul Gi Lee ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2019 한국농공학회 학술대회초록집 Vol.2019 No.-

Studies on food waste have gained increased attention in recent time due to its adverse effects on the environment and associated waste of resources. It is established that food waste at the consumption stage of the supply chain is more pronounced in the developed countries, among which Korea belongs. Addressing the food waste generation is a promising way to achieving sustainable development goal of the United Nations on sustainable consumption and production patterns which Korea is desirous of pursuing. However, inadequate information on the actual amount of household food waste generation has repressed the appropriate policy interventions designed to reduce and set a performance target for food waste generation. This study investigated the quantity of food waste in Korean households using a novel direct weighing sampling method of characterization. The households were selected from three different housing systems, including apartment (33), villa (31), and house (20). The results showed that the average food waste generated among the sampled Korean households was 0.29 ± 0.20 kg per capita per day, with fruits, vegetable, and rice and rice products contributed highest proportions of 30.04, 26.76, and 14.46%, respectively. The inedible portion accounted for 1.17% of the total food waste. The statistical analyses revealed the non-significant difference (p = 0.3524) in food waste generation among the different housing systems. However, there were variations in the quantity of food waste type among the investigated housing systems. The outcomes of this study can further be explored for the estimation of embedded resources and environmental impacts of household food waste.

CMIP5 및 CMIP6모델의 연별 및 계절별 기후인자 모의 비교분석

바실아델러둔 ( Bashir Adelodun ),이슬기 ( Seulgi Lee ),미르자주네이드아흐메 ( Mirza Junaid Ahmad ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0

Increasing climate extremes have continued to impact on the socioeconomic well-being and ecosystems due to climate change. However, reliable projection of important climate variables such as precipitation and temperature are critical to develop adaptation, mitigation, and resilience strategies against various future climate change impacts. Thus, it is important to comprehensively evaluate the applicability of GCM models for effective representation and reliable projections of local climatic characteristics. This study evaluates the performance of 24 GCMs from the Coupled Model Intercomparison Project Phases 5 and 6 (11 from CMIP5 and 13 from CMIP6) and their multi-model ensembles to simulate precipitation, maximum (T_max), and minimum temperature (T_min) at annual and seasonal scales over Chungcheong region from 1975 to 2015. The inverse distance weighting and quantile delta mapping were applied to bias correct the GCM data. Six major evaluating indices comprising of Normalized root mean square error (NRMSE), Nash-Sutcliffe efficiency (NSE), and Modified Index of agreement (Mod_IoA) for temporal performance and Kling-Gupta Efficiency (KGE), Spatial efficiency metrics (SPAEF), Fraction skill score (FSS) for spatial performance assessment were used after which a comprehensive GCM ranking was applied. The overall results of the performance evaluation of bias-corrected GCMs showed that CMIP6 models performed better in simulating precipitation, T_max, and T_min at both temporal and spatial scales. For CMIP5, the top 3 performing GCMs are GISS, ACCESS1-3, and MRI-CGCM3 for precipitation; CanESM2, GISS, and MPI-ESM-L-R for T_max; and GFDL, MRI-CGCM3, and CanESM2 for T_min. However, the top 3 performing GCMs for CMIP6 are MRI-ESM2-0, BCC_CSM, and GFDL for precipitation; MIROC6, BCC_CSM, and MRI-ESM2-0 for T_max, and GFDL, MPI_ESM_HR, and MRI-ESM2-0 for T_min. Meanwhile, the multi-model ensembles (an average of top 3 GCMs) performed better in simulating historical precipitation and T_min for both CMIP5 and CMIP6 compared with multi-model ensembles (an average of all the GCMs), which only performed slightly better for simulating T_max. This study provides an insightful findings on the selection of appropriate GCMs to generate reliable climate projections for local climate in Chungcheong region of South Korea.

극한강우 및 홍수피해 인과관계 평가: 충청지역 사례를 중심으로

바실아델러둔 ( Bashir Adelodun ),골든오데이 ( Golden Odey ),쿠두스아데이 ( Qudus Adeyi ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0

Flood, one of the major natural disasters responsible for direct economic damage in South Korea, has become an increasing event in recent times. Driven by climate change, precipitation extremes play a significant role on the flood damage and its further increase will exacerbate the socioeconomic impact in the country. However, the empirical evidence linking precipitation extremes to the historical flood damage is limited. Thus, understanding the causal link between extreme precipitation characteristics and flood damage are critical to provide important policies on preparedness and adaptation strategies to mitigate the disasters associated with flood events. The spatial and temporal changes of precipitation extremes from 10 synoptic stations based on daily precipitation data were analyzed using the ClimPACT2 tool and Mann-Kendall test. The four precipitation extreme indices consisting of consecutive wet days (CWD), number of very heavy precipitation wet days (R30 mm), maximum 1-day precipitation amount (Rx1day), and simple daily precipitation intensity (SDII), which represent changes in intensity, frequency, and duration, respectively, and the time series data on flooded area and flood damage from 1985 to 2020 were used to investigate the causal relationship in the ARDL-ECM framework and pairwise Granger causality analysis. The trend results showed that majority of the precipitation indices indicated positive trends, however, CWD showed no significant changes. ARDL-ECM framework showed that there was a long-run relationship among the variables. Further analysis on the empirical results showed that flooded area and Rx1day have significant positive impacts on the flood damage in both short and long-runs while R30 mm only indicated significant positive impact in the short-run, both in the current period, which implies that an increase in flooded area, Rx1day, and R30 mm will cause an increase in the flood damage. The pairwise Granger analysis showed unidirectional causality from the flooded area, R30 mm, Rx1day, and SDII to flood damage. Thus, these precipitation indices could be useful as indicators of pluvial flood damage in Chungcheong region.

SDG성취를 위한 한국가구별 음식물 쓰레기 물발자국 규명

바실아델러둔 ( Bashir Adelodun ),이슬기 ( Seul-gi Lee ),골든오데이 ( Golden Odey ),칼리드아데올라아데요미 ( Khalid Adeola Adeyemi ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2021 한국농공학회 학술대회초록집 Vol.2021 No.-

음식물 손실 및 쓰레기가 식량 생산 및 수자원 이용에 미치는 영향 평가

바실아델러둔 ( Bashir Adelodun ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2018 한국농공학회 학술대회초록집 Vol.2018 No.-

Increasing population density and over-exploitation of resources for food production will indisputably continue to have a serious impact on the food security and water resources in Korea. Currently, the agricultural sector is allotted about 48% percent of the country’s total water use. However, food supply largely depends on importation with a relatively small cultivated area, characterized by low efficiency and high production cost. The situation is expected to be more precarious with the FAO estimation that requires doubling of food production by 2050. Management of agricultural water along the food supply chain can ensure efficient utilization of resources to closing the gap between food production and food consumption, without recourse to unfeasible agricultural intensification or incessant high food importation. This study examines the wastage of food and water resources inherent in food loss and waste (FLW) across the food supply chain, from farm to fork, using the top-down approach of global FLW mass flow model. The results show that in the period of estimation (2007 - 2013), the average FLW generated is 10.41 million tonnes (214.91 kg/capita/year), accounting for 21 % of the total food supply in the country, with plant-based food responsible for the majority. Of the total FLW in the food supply chain, food loss at upstream such as production, postharvest and storage, and processing and packaging accounted for 41% while the food waste at downstream stages including distribution, and consumption were 59%. Furthermore, using an estimate of the water footprint of representative in each food group, the results indicate that the loss of water resources (both green and blue water) embedded in the FLW is 42.88 billion m³, which is about 33% of the total water resources in the country. This study, therefore, shows that the self-sufficiency of food production in Korea can be achieved through FLW reduction and efficient management of water resources. The study, in addition, indicates where the food loss and waste reduction interventions should be targeted at along the food supply chain.

계절적 기후변화의 콩생산량에 미치는 영향 평가

골든오데이 ( Golden Odey ),바실아델러둔 ( Bashir Adelodun ),칼리드아데올라아데요미 ( Khalid Adeola Adeyemi ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2021 한국농공학회 학술대회초록집 Vol.2021 No.-

토지, 물 및 식량 안보를 위한 식품 무역의 영향성 평가: 한국의 관점에서

골든오데이 ( Golden Odey ),바실아델러둔 ( Bashir Adelodun ),이슬기 ( Seulgi Lee ),칼리드아데올라아데요미 ( Khalid Adeola Adeyemi ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2022 한국농공학회 학술대회초록집 Vol.2022 No.-

The observed and predicted changes in climate, as well as the growth in urban population, are creating severe stress on existing water resources in South Korea. By the importation of agricultural products from more water-rich countries through the virtual water concept, a country could save local water resources for other important uses. However, these imports from other countries could lead to certain vulnerabilities in the importing country derived from climate change. This study therefore assessed the implication of virtual water imports and climate change through food trade, on the water, land and food security status of South Korea over the period of 2000 to 2017. The results showed that significant amounts of national water and land was saved through the importation of major upland crops. Virtual water imports increased significantly over time, rising from 16.2 Bm3 in 2000 to 16.5, 17.4, and 20.7 Bm3 in 2005, 2011, and 2017 respectively, with the USA, China, Australia, Brazil and Canada being the major exporters to South Korea. The study also revealed high Climate Vulnerability Index (CVI) values for the oils and grains category of imported food, implying the high vulnerability of South Korea to climate change effects resulting from the import of these crops. The quantitative impacts and structural changes in virtual water trade, as well as the link between climate change, food security, international trade, and domestic water consumption could be evaluated for the sustainable management and allocation of resources.

식량교역의 토지, 물, 식량 안보에 미치는 영향 평가

골든오데이 ( Golden Odey ),바실아델러둔 ( Bashir Adelodun ),이슬기 ( Seulgi Lee ),칼리드아데올라아데요미 ( Khalid Adeola Adeyemi ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2022 한국농공학회 학술대회초록집 Vol.2022 No.-

The observed and predicted changes in climate, as well as the growth in urban population, are creating severe stress on existing water resources in South Korea. By the importation of agricultural products from more water-rich countries through the virtual water concept, a country could save local water resources for other important uses. However, these imports from other countries could lead to certain vulnerabilities in the importing country derived from climate change. This study therefore assessed the implication of virtual water imports and climate change through food trade, on the water, land and food security status of South Korea over the period of 2000 to 2017. The results showed that significant amounts of national water and land was saved through the importation of major upland crops. Virtual water imports increased significantly over time, rising from 16.2 Bm3 in 2000 to 16.5, 17.4, and 20.7 Bm3 in 2005, 2011, and 2017 respectively, with the USA, China, Australia, Brazil and Canada being the major exporters to South Korea. The study also revealed high Climate Vulnerability Index (CVI) values for the oils and grains category of imported food, implying the high vulnerability of South Korea to climate change effects resulting from the import of these crops. The quantitative impacts and structural changes in virtual water trade, as well as the link between climate change, food security, international trade, and domestic water consumption could be evaluated for the sustainable management and allocation of resources.

물과 가상수에 대한 대중인식 형성 인자 분석

골든오데이 ( Golden Odey ),바실아델러둔 ( Bashir Adelodun ),이슬기 ( Seulgi Lee ),쿠두스아데이 ( Qudus Adeyi ),최경숙 ( Kyung Sook Choi ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0

Water demand management is a crucial approach for ensuring sustainable water supply. To ensure an effective water demand management, it is essential to have a good understanding of public perceptions of water use. In this study, we examined the perceptions of water use and virtual water of Daegu inhabitants in South Korea, with a focus on understanding their sociodemographic characteristics, water-saving behaviors, environmental attitudes, and accuracy in estimating water use and virtual water content. The results indicated that the majority of respondents were aware of the need for water conservation but exhibited only moderate engagement in water-saving behaviors. They consistently underestimated their water use across various activities (portable drinking water, shower, toilet flush, laundry and car wash), indicating a lack of understanding regarding the magnitude of water consumption. Similarly, respondents had limited awareness of the virtual water content in different products, with inaccurate perceptions of water-intensive products. Sociodemographic factors such as gender, education level, annual income, and family size significantly influenced perceptions of water use, while environmental attitudes played a significant role in the perceptions of both water use and virtual water content. The study highlights the need for educational initiatives to enhance public awareness and understanding of water use and virtual water, particularly in addressing misconceptions and promoting sustainable water management practices. While the findings are specific to Daegu city, they provide insights that can inform water management strategies in other cities globally.