http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Pollutant Load Characteristics of a Rural Watershed of Juam Lake
한국헌,윤광식,정재운,윤석군,김영주,Han, Kuk-Heon,Yoon, Kwang-Sik,Jung, Jae-Woon,Yoon, Suk-Gun,Kim, Young-Joo The Korean Society of Agricultural Engineers 2005 한국농공학회논문집 Vol.47 No.3
A monitoring study has been conducted to identify hydrologic conditions, water quality and nutrient loading characteristics of small watershed in Juam Lake. Climate data of the watershed were collected; flow rate was measured and water quality sampling was conducted at the watershed outlet for this study. Water quality data revealed that T-P concentrations meet I grade of lake water quality standard during non-storm period, but degraded up to II-III grade of lake water quality standard during storm period. The observed T-N concentrations always exceeded lake water quality standard. Therefore, T-P was identified as limiting chemical constituent for eutrophication of Juam Lake. T-P concentration of non-storm period also revealed that point source pollution is not serious in the watershed. Three year monitoring results showed that the observed T-N losses were $10.85\~18.88$ kg/ha and T-P losses were $0.028\~0.323$ kg/ha during six month (Mar. - Oct.), respectively. Major portion of runoff amount discharged by a few storm events a year and nutrient load showed apparent seasonal variation. Huge runoff amounts were generated by intense storms, which make application of water treatment or detention facilities ineffective. Monitoring results confirmed that water quality improvement by abating nonpoint source pollution in rural watershed of monsoon climate should be focused on source control. T-P losses from paddy field seemed to consist of significant amount of total load from study watershed. Therefore, management of drainage from paddy field is considered to be important for preventing algal blooming problem in Juam Lake.
관개기 곡간지 유역 필지논에서의 비점원오염물질 유출특성
한국헌,Han, Kuk-Heon 한국관개배수위원회 2011 한국관개배수논문집 Vol.18 No.1
The aim of this study was to evaluate the load of non-point sources pollutant at a paddy plot located at the valley watershed during irrigation period. Irrigation, runoff and water quality data in the paddy plot were analyzed periodically from June 1 to October 31 in 2005. The observed amount of precipitation, irrigation, runoff for the experimental paddy plot during the irrigation period was 1,297.8, 223.2, and 825.4mm, respectively. Total-N concentrations ranged from 3.73 to 18.10mg/L, which was generally higher than the quality standard of agricultural water (1.0mg/L). Total-P concentrations ranged from 0.111 to 0.243mg/L and the average was 0.139mg/L. The observed runoff pollutants loadings from the paddy plot were measured as 34.4 kg/ha for T-N, 1.0 kg/ha for T-P and 213.8 kg/ha for SS. The non-point sources pollutant load in drainage water depends on rainfall and surface drainage water amount from the paddy plot. We are considering that these results were affected by rainfall as well as hydrological condition, soil management, whether or not fertilizer application, cropping, rice straw and plowing.
한국헌 ( Han Kuk-heon ),김영화 ( Kim Young-hwa ),박지성 ( Park Ji-sung ) 한국농공학회 2004 한국농공학회 학술대회초록집 Vol.2004 No.-
도서지역에 설치된 주요 수원공 현황을 분석하기 위해 "농업생산기반정비사업통계연보" 및 "각종 통계연보" 등을 이용하여 저수지, 양수장, 취입보, 집수암거, 관정 등을 분석하였고, 이를 통한 도서지역 수리시설물의 문제점 및 개선방안을 도출하였다. 이를 요약하면 다음과 같다. ○ 우리나라의 도서수는 총 3,170개소로 유인도서는 15.5%인 491개소, 무인도서는 84.5%인 2,679개소로 대부분 무인도서이다. ○ 도서지역 수리시설물 현황은 저수지 865개소에 수혜면적은 20,415.5ha, 양수장 183개소 10,825.0ha, 취입보 187개소 1,700.5ha, 집수암거 191개소 668.4ha, 관정 1170개소 3,429.7ha이다. ○ 도서지역 수리시설물에 대한 문제점은 ① 도서지역의 경우 공사비 할증율(20%)이 가산되어 내륙에 비해 사업비 과다로 경제성이 떨어져 지구선정시 불이익을 받고 있으며, ② 수원공의 내한능력부족으로 인해 가뭄 등에 대한 대처 능력 저하, ③ 소규모 시설의 산재로 효율적인 물관리의 어려움, ④ 용수로의 시설 노후에 따른 용수손실량이 과다, ⑤ 물관리 여건 변화에 따른 대처 미흡 및 농업인의 물관리 참여의식 결여 및 협조체계 미흡 등의 문제점을 가지고 있다. ○ 도서지역 수리시설물에 대한 개선방안은 ① 도서지역은 지구선정시 경제성 검토 배제, ② 권역별, 수계별, 지구별 광역 물관리 체계 구축으로 한정된 수자원의 효율적 이용방안 모색, ③ 가뭄에 대한 내한능력 향상 검토 및 비수기를 이용한 준설 및 개보수사업 등에 의한 저수량 확보, ④ 도서지역 수자원 확보를 위한 다양한 연구개발의 적극 추진되어야 하겠다. This study aims to analyze the current situation of irrigated facilities and suggest their improvement measures in island areas. The number of Korea’s islands is 3,170 in total, but 84.5% of them are deserts. The irrigated facilities are: 865 of reservoir with 20,415.5ha of benefited area, 183 of pumping stations with 10,825.0ha, 147 of Weir with 1,700.5ha, 191 of Infiltration Gallery with 668.4ha, and 1,170 of tube wells with 3,429.7ha. In order to improve island irrigated facilities, there need upgrade of capacity against drought, exemption from applying economy criteria in selecting project areas, establishment of water management system facilitating farmers’ participation and cooperation, and investment of R&D for diversifying water sources.
논에서 일주기 수질조사시 채수빈도가 오염부하량 산정에 미치는 영향
한국헌 ( Han Kuk-heon ),윤광식 ( Yoon Kwang-sik ),조진구 ( Cho Jin-goo ),조재영 ( Cho Jae-young ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
In order to examine effects of sampling frequency during rainfall-runoff process from paddy field on the estimation of pollution load, EMCs of several water sampling frequencies were examined. It was found that the difference of EMCs between one time sampling and two hours consecutive sampling during storm event showed 34.1~ -19.1 % for T-N, 55.4~-27.3% for T-P, 68.5~-41.0% for the SS, respectively. Five times sampling reduced difference of EMCs compared to those two hours interval sampling to 15.2~-15.2% for T-N, 20.0~-26.2% for T-P, 28.6~-35.7% for the SS, respectively.
한국헌 ( Han Kuk-heon ),윤광식 ( Yoon Kwang-sik ),최진규 ( Choi Jin-kyu ),조재영 ( Cho Jae-young ),김영주 ( Kim Young-joo ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
A field monitoring study was carried out to investigate the water balance and losses of nutrients from paddy fields in Sumjin river basin. The size of paddy fields was 115 ha and the fields were irrigated from a pumping station. The runoff loading was the highest in June because of the high concentrations of nutrients due to applied fertilizer. The surface runoff losses of T-N and T-P in runoff water were 53.4 to 68.3kg/ha(average 59.7kg/ha) and 0.38 to 2.20kg/ha(average 1.42kg/ha), respectively. When the runoff losses of nutrients were compared to applied chemical fertilizer, it was found that 42% to 60% of nitrogen lost via runoff while runoff losses of phosphorus account for 3.0% to 17.2% of the total applied amount during entire year.
김영화,한국헌,박지성,김채수,Kim Young Hwa,Han Kuk Heon,Park Ji Sung,Kim Chae Soo 한국관개배수위원회 2004 한국관개배수논문집 Vol.11 No.1
For effective development of upland areas, e development model of upland area integrated improvement project are suggested which on standard type and integrated infrastructure improvement type, rural Income raising type and eco-friendly consolidation type