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서춘석 ( Seo Chun Suk ),박승우 ( Park Seung Woo ),임상준 ( Im Sang Jun ),윤광식 ( Yoon Kwang Sik ),김상민 ( Kim Sang Min ),강문성 ( Kang Moon Sung ) 한국농공학회 2002 韓國農工學會誌 : 전원과 자원 Vol.44 No.3
The objective of this study was to develop a modified CREAMS model for paddy field conditions. The model simulates daily balance of water and nutrient from irrigated paddies using meteorological, irrigation, and agricultural management data. The model simulates daily evapotranspiration of paddy using Penman equation and determines daily flooding depth changes. Total nitrogen and phosphorus concentrations within flooding water, surface runoff, and leaching water from a paddy field also can be simulated. Parameters of the model were calibrated using observed data of the Agricultural Experiment Station of the Seoul National University in Suwon Korea. The model was applied for the irrigation period of paddy field in Gicheon area when 1,234 mm annual rainfall was occurred. The simulated losses of the total nitrogen and total phosphorous were 11.27 kg/ha and 0.98 kg/ha, respectively. There was a good agreement between observed and simulated data. It was found that CREAMS-PADDY model was capable of predicting runoff and nutrient losses from irrigated paddy fields.
관개용 저수지 운영을 위한 Web 기반 정보시스템의 개발
서춘석 ( Seo Chun Suk ),박승우 ( Park Seung Woo ),강문성 ( Kang Moon Seong ),강민구 ( Kang Min Goo ) 한국농공학회 1999 한국농공학회 학술대회초록집 Vol.1999 No.-
A Web-based information system from the Korea Agricultural Water Use Laboratory, KAWUL, has been developed to provide with regional water management information and guidance for the operations of irrigation reservoirs through the World Wide Web (WWW). Twenty-six reservoirs are selected as the reference reservoirs for regional water management, and the real-time operation guide may be issued the growing seasons. The information available from the system includes the weather forecasting, drought analyses, and reservoir operation data for those reference sites. For a specific reservoir, the manager may access the system to obtain the water requirement, irrigation scheduling, and reservoir operations that fit best to the irrigation district.
서춘석 ( Seo Chun Suk ),임상준 ( Im Sang Jun ),박승우 ( Park Seung Woo ),윤광식 ( Yoon Kwang Sik ) 한국농공학회 2000 한국농공학회 학술대회초록집 Vol.2000 No.-
CREAMS-PADDY model for simulating daily water and nutrient balance at irrigated paddies was developed, applied to, and validated with field data. The model simulates daily flooding depth and total nitrogen and phosphorus concentrations from meterorological, irrigation, and farming data. Simulated results from the model were in good agreement with field data. Among different scenarios to reduce nutrient losses from paddies, the water management was found to be very effective, and recommended for field applications.
임상준 ( Im Sang Jun ),서춘석 ( Seo Chun Suk ),박승우 ( Park Seung Woo ) 한국농공학회 2000 한국농공학회 학술대회초록집 Vol.2000 No.-
The purpose of this study were to monitor rainfall and runoff data from paddy blocks and forest areas at the Balan Experimental Watershed, and to investigate the variations of runoff characteristics with different land use. Field data showed that the total runoff from paddies and forest areas are not significantly different in volume. The peak discharge from forest areas was less than that from paddies for lighter storms, but became greater for heavier storms. The results demonstrate that paddies play an important role to reduce peak discharge from heavy storms as compared to forest.