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한국농공학회> 한국농공학회논문집

한국농공학회논문집 update

Journal of the Korean Society of Agricultural Engineers

  • : 한국농공학회
  • : 농학분야  >  농공학
  • : KCI등재
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  • : 연속간행물
  • : 격월
  • : 1738-3692
  • : 2093-7709
  • : 한국농공학회지(~2003) → 한국농공학회논문집(2004~)

수록정보
수록범위 : 46권1호(2004)~61권6호(2019) |수록논문 수 : 1,068
한국농공학회논문집
61권6호(2019년 11월) 수록논문
최근 권호 논문
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KCI등재

1토양 특성을 이용한 토양유기탄소저장량 산정 모형 개발

저자 : 이태화 ( Lee Taehwa ) , 김상우 ( Kim Sangwoo ) , 신용철 ( Shin Yongchul ) , 정영훈 ( Jung Younghun ) , 임경재 ( Lim Kyoung-jae ) , 양재의 ( Yang Jae E ) , 장원석 ( Jang Won Seok )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 1-8 (8 pages)

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Carbon dioxide is one of the major driving forces causing climate changes, and many countries have been trying to reduce carbon dioxide emissions from various sources. Soil stores more carbon dioxide(two to three times) amounts than atmosphere indicating that soil organic carbon emission management are a pivotal issue. In this study, we developed a Soil Organic Carbon(SOC) storage estimation model to predict SOC storage amounts in soils. Also, SOC storage values were assessed based on the carbon emission price provided from Republic Of Korea(ROK). Here, the SOC model calculated the soil hydraulic properties based on the soil physical and chemical information. Base on the calculated the soil hydraulic properties and the soil physical·chemical information, SOC storage amounts were estimated. In validation, the estimated SOC storage amounts were 486,696 tons(3.526 kg/m2) in Jindo-gun and shown similarly compared to the previous literature review. These results supported the robustness of our SOC model in estimating SOC storage amounts. The total SOC storage amount in ROK was 305 Mt, and the SOC amount at Gyeongsangbuk-do were relatively higher than other regions. But the SOC storage amount(per unit) was highest in Jeju island indicating that volcanic ashes might influence on the relatively higher SOC amount. Based on these results, the SOC storage value was shown as 8.4 trillion won in ROK. Even though our SOC model was not fully validated due to lacks of measured SOC data, our approach can be useful for policy-makers in reducing soil organic carbon emission from soils against climate changes.

KCI등재

2식생여과대 유사 저감 효율 산정을 위한 정규화 방안

저자 : 배주현 ( Bae Joohyun ) , 한정호 ( Han Jeongho ) , 양재의 ( Yang Jae E ) , 김종건 ( Kim Jonggun ) , 임경재 ( Lim Kyoung Jae ) , 장원석 ( Jang Won Seok )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 9-19 (11 pages)

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Vegetative Filter Strip (VFS) is the best management practice which has been widely used to mitigate water pollutants from agricultural fields by alleviating runoff and sediment. This study was conducted to improve an equation for estimating sediment trapping efficiency of VFS using several different regularization methods (i.e., ordinary least squares analysis, LASSO, ridge regression analysis and elastic net). The four different regularization methods were employed to develop the sediment trapping efficiency equation of VFS. Each regularization method indicated high accuracy in estimating the sediment trapping efficiency of VFS. Among the four regularization methods, the ridge method showed the most accurate results according to R2, RMSE and MAPE which were 0.94, 7.31% and 14.63%, respectively. The equation developed in this study can be applied in watershed-scale hydrological models in order to estimate the sediment trapping efficiency of VFS in agricultural fields for an effective watershed management in Korea.

KCI등재

3현장실험을 통한 축산시설로부터 배출되는 축산악취의 확산 평가

저자 : 여욱현 ( Yeo Uk-hyeon ) , 이인복 ( Lee In-bok ) , 하태환 ( Ha Tae-hwan ) , 데카노크리스티나 ( Decano Cristina ) , 김락우 ( Kim Rack-woo ) , 이상연 ( Lee Sang-yeon ) , 김준규 ( Kim Jun-gyu ) , 최영배 ( Choi Young-bae ) , 박유미 ( Park You-me )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 21-30 (10 pages)

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Livestock odor is comprised of mixed type of odorous compounds. Among these, ammonia (NH3) and hydrogen sulfide (H2S) are the two known major odor causing substances. Because high odor concentration reduces productivity of livestock and causes damage to the surrounding communities, quantitative analysis is needed to manage the odor inside and outside the livestock facilities. It is also necessary to evaluate odor dispersion according to the distance between the receptors taking into account the influence of odor source and weather condition. Therefore, in this study, we tried to evaluate the internal environment and odor dispersion from experimental pig house considering weather conditions. An experimental farm was specifically selected to eliminate the interference of odors generated by adjacent farms. NH3 and complex odor were quantitatively analyzed using a gas detector and air dilution sensory method. The concentration of NH3 and complex odor in pig house showed a distinct concentration difference according to the cleaning and ventilation conditions. NH3 concentration and complex odor was lower than emission standard in the pig house and at the site boundary. The average NH3 concentration (P1∼P3) and the NH3 concentration at the site boundary (S1) were strongly correlated with R=0.77. While the correlation for complex odor inside and at the site boundary had R=0.52. The correlation coefficient between NH3 and the complex odor was 0.80.

KCI등재

4기후변화 대응을 위한 양수장의 농업가뭄 취약성 실태 평가

저자 : 장민원 ( Jang Min-won ) , 김수진 ( Kim Soo-jin ) , 배승종 ( Bae Seung-jong ) , 유승환 ( Yoo Seunghwan ) , 정경훈 ( Jung Kyunghun ) , 황세운 ( Hwang Syewoon )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 31-40 (10 pages)

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In order to implement practical alternatives to proactively cope with the agricultural drought, the potential vulnerability of irrigation pumping stations to agricultural drought was quantitatively evaluated. Data for the 124 pumping stations which are correlatable to the three proxy variables, i.e. exposure, sensitivity, and adaptive capacity was collected by the Korea Rural Community Corporation, and then standardized considering distribution of each data set. Finally, the vulnerability index was calculated by multiplying the weights determined by the expert survey. The results showed that the vulnerability index ranged from 0.709 to 0.331 and the most vulnerable pumping stations such as Judam, Wongoo and Jinahn were mostly located in Gyeongbuk province likely because of the climatological characteristics with high temperature and low rainfall around this area. In addition, it was found that the adaptive capacity was a dominant factor comparing to exposure or sensitivity proxy variables in contributing to the vulnerability. It is therefore recommended that more practical alternatives should be employed to effectively reduce the vulnerability of an individual pumping station to agricultural drought. Furthermore, the corresponding data related to adaptive capacity should be systematically organized and managed at a field level to design reliable adaptation strategies.

KCI등재

5가뭄 취약지역의 관정 효율 및 능력에 대한 취약성평가

저자 : 신형진 ( Shin Hyung-jin ) , 이재영 ( Lee Jae-young ) , 조성문 ( Jo Sung-mun ) , 전상민 ( Jeon Sang-min ) , 김미솔 ( Kim Mi-sol ) , 차상선 ( Cha Sang-sun ) , 박찬기 ( Park Chan-gi )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 41-53 (13 pages)

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Recently, the damage caused by climate change has been distinguished in the world. The Korean Peninsula is also suffering from drought, so it is necessary to study the vulnerability assessment to identify and predict the state of the irrigation facility, which is a irrigation facility. As the damage caused by drought is occurring in the Korean peninsula, it is necessary to study the vulnerability assessment to know the condition of the irrigation facility, and to predict it. The target areas were Yeongdong-gun, Cheonan-si, Mungyeong-si, Geochang-gun, Muju-gun, and Yeonggwang-gun. The survey items were selected as positive impacts survey items, including precipitation, groundwater level, and pumping capacity per groundwater well. The negative impacts were selected as the cultivation acreage, Number of days without rain, and the ratio of private underground wells. The survey method was investigated by various methods such as “weather data portal”, “groundwater level status information”, “agricultural drought management system”, “groundwater survey yearbook”. The results of vulnerability assessment were expressed by the score by conducting survey and standardization. As a result, Yeonggwang-gun showed normal vulnerability, and other areas showed “vulnerable” or “very vulnerable”.

KCI등재

6필지 단위 주경사장 산정 및 적용을 통한 범용토양유실공식 지형인자 산정 개선 연구

저자 : 박윤식 ( Park Youn Shik ) , 박종윤 ( Park Jong-yoon ) , 장원석 ( Jang Won Seok ) , 김종건 ( Kim Jonggun )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 55-65 (11 pages)

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Universal Soil Loss Equation (USLE) is to estimate potential soil loss and has benefit in use with its simplicity. The equation is composed of five factors, one of the factors is the slope length and steepness factor (LS factor) that is for topographic property of fields to estimate potential soil loss. Since the USLE was developed, many equations to compute LS was suggested with field measurement. Nowadays the factor is often computed in GIS software with digital elevation model, however it was reported that the factor is very sensitive to the resolution of digital elevation model. In addition, the digital elevation model of high resolution less than 3 meter is required in small field application, however these inputs are not associate with the empirical models' backgrounds since the empirical models were derived in 22.1 meter field measurements. In the study, four equation to compute LS factor and two approaches to determine slope length and steepness were examined, and correction factor was suggested to provide reasonable precision in LS estimations. The correction factor is computed with field area and cell size of digital elevation model, thus the correction factor can be adapted in any USLE-based models using LS factor at field level.

KCI등재

7배수효율이 높은 지하암거의 간격과 주름유공관의 통수능 비교분석

저자 : 김현태 ( Hyuntai Kim ) , 유전용 ( Jeonyong Ryu ) , 정기열 ( Kiyuol Jung ) , 박영준 ( Youngjun Park )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 67-72 (6 pages)

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This study compared the theory of a culvert spacing and analytical results of the seepage flow for the subsurface drainage. i) If culvert spacing (Sc) is within 5 m, the unit drainage (q) is very larger; in contrast, if Sc is 5 m or more, there is very little drainage in the middle between drains. Therefore, the drain spacing should be within 5 m to ensure high drainage efficiency. ii) Since the planned culvert drainage increases linearly with the soil's permeability coefficient (k), k must be taken into account when determining the drain diameter by the planned culvert drainage. iii) As a result of analyzing the drainage performance of the absorbing culvert, the drainage performance is sufficient with the diameter of the corrugated drain pipe Dc = 50 mm at the length of the drain Lc = 100 m. iv) Therefore, if the drain spacing (Sc) is less than 5 m using the low-cost non-excavated drainage pipe method (Φ50 mm the corrugated drain pipe and fiber mat) rather than the conventional trench drain method (Sc > 10 m, Dc > 100 mm), uniform and high drainage efficiency can be ensured as well as low construction cost. v) The sub-irrigation+drainage culvert requires narrower drain spacing (Sc < 2-3 m) for irrigation. As a result of examining the condition of 35 mm in diameter (Dc) and 2∼3 m in drain spacing, it is possible to apply the non-excavated drainage pipe method to the sub-irrigation+drainage culvert because drainage performance is sufficient at the drain length Lc = 50 m.

KCI등재

8작물 수분 스트레스 지수 산정을 위한 최적의 관측 간격과 시간에 대한 통계적 분석

저자 : 최용훈 ( Choi Yonghun ) , 김민영 ( Kim Minyoung ) , 오우현 ( Oh Woohyun ) , 조정건 ( Cho Junggun ) , 윤석규 ( Yun Seokkyu ) , 이상봉 ( Lee Sangbong ) , 김영진 ( Kim Youngjin ) , 전종길 ( Jeon Jonggil )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 73-79 (7 pages)

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Continuous and tremendous data (canopy temperature and meteorological variables) are necessary to determine Crop Water Stress Index (CWSI). This study investigated the optimal monitoring time and interval of canopy temperature and meteorological variables (air temperature, relative humidity, solar radiation and wind speed) to determine CWSIs. The Nash-Sutcliffe model efficiency coefficient (NSE) was used to quantitatively describe the accuracy of sampling method depending upon various time intervals (t=5, 10, 15, 20, 30 and 60 minutes) and CWSIs per every minute were used as a reference. The NSE coefficient of wind speed was 0.516 at the sampling time of 60 minutes, while the ones of other meteorological variables and canopy temperature were greater than 0.8. The pattern of daily CWSIs increased from 8:00 am, reached the maximum value at 12:00 pm, then decreased after 2:00 pm. The statistical analysis showed that the data collection at 11:40 am produced the closest CWSI value to the daily average of CWSI, which indicates that just one time of measurement could be representative throughout the day. Overall, the findings of this study contributes to the economical and convenient method of quantifying CWSIs and irrigation management.

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9GCM 공간상세화 방법별 기후변화에 따른 수문영향 평가 - 만경강 유역을 중심으로 -

저자 : 김동현 ( Kim Dong-hyeon ) , 장태일 ( Jang Taeil ) , 황세운 ( Hwang Syewoon ) , 조재필 ( Cho Jaepil )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 81-92 (12 pages)

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The objective of this study is to evaluate hydrologic impacts of climate change according to downscaling methods using the Soil and Water Assessment Tool (SWAT) model at watershed scale. We used the APCC Integrated Modeling Solution (AIMS) for assessing various General Circulation Models (GCMs) and downscaling methods. AIMS provides three downscaling methods: 1) BCSA (Bias-Correction & Stochastic Analogue), 2) Simple Quantile Mapping (SQM), 3) SDQDM (Spatial Disaggregation and Quantile Delta Mapping). To assess future hydrologic responses of climate change, we adopted three GCMs: CESM1-BGC for flood, MIROC-ESM for drought, and HadGEM2-AO for Korea Meteorological Administration (KMA) national standard scenario. Combined nine climate change scenarios were assessed by Expert Team on Climate Change Detection and Indices (ETCCDI). SWAT model was established at the Mankyung watershed and the applicability assessment was completed by performing calibration and validation from 2008 to 2017. Historical reproducibility results from BCSA, SQM, SDQDM of three GCMs show different patterns on annual precipitation, maximum temperature, and four selected ETCCDI. BCSA and SQM showed high historical reproducibility compared with the observed data, however SDQDM was underestimated, possibly due to the uncertainty of future climate data. Future hydrologic responses presented greater variability in SQM and relatively less variability in BCSA and SDQDM. This study implies that reasonable selection of GCMs and downscaling methods considering research objective is important and necessary to minimize uncertainty of climate change scenarios.

KCI등재

10수정 Penman 및 Penman-Monteith 논벼 증발산량 방법 적용에 따른 농업용 저수지 용수공급능 분석

저자 : 조건호 ( Gun Ho Cho ) , 한경화 ( Kyung Hwa Han ) , 최경숙 ( Kyung Sook Choi )

발행기관 : 한국농공학회 간행물 : 한국농공학회논문집 61권 6호 발행 연도 : 2019 페이지 : pp. 93-101 (9 pages)

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This study aims to analyze the influences of applications of two different evapotranspiration (ET) estimation methods on the irrigation water requirements (IWR) for paddy rice and water supply reliability of agricultural reservoirs. The modified Penman (MP), traditional method, and the Penman-Monteith (PM), the new adopted method, were applied on 149 reservoirs located in Honam province for this study. The weather date was used from 1987 to 2016, and analysed the trends of temperature and rainfall during rice growing season between past and current 10 years respectively. The increased average temperature and rainfall were observed from the current 10 years compared to the past years. This phenomena impacts on the results of ET and IWR estimations with decreased IWR obtained from high rainfall regions and increased ET obtained high temperature regions. For the comparisons of application results of two ET approaches, the PM method showed lower ET and IWR, and hence more reliable storage capacity of the reservoirs respect to water supply to paddy fields. The results also showed that the influences of different ET methods applications on the water supply reliability of reservoirs are negligible for the cases of over 3.7 watershed ratio and 670 mm unit reservoir storage, while significant variations of the results obtain from the applications between two ET approaches for the opposite cases. Further studies are necessary to consider various field conditions for practical applications of the PM method estimating ET in the fields of paddy farming.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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