지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The main objective of this study was to evaluate the effects of control-release fertilizer (CRF) on pollutant loadings from a small watershed. The Baran watershed, 386 ha in size, was selected as the study site, and the AGNPS (Agricultural Non-point Source Pollution) model was used to evaluate the effects of fertilizer types. Digital maps of digital elevation (DEM), slope distribution,channel, flow direction, landuse, soil, and curve number were extracted from the study watershed. Model parameters related to hydrology and water quality were calibrated and validated by comparing model predictions with the observed data collected for 2years (1999 to 2000). Calibration and validation resulted in R² values of 0.75-0.91 for all the water quality parameters. All the paddy fields (21.2 %) of the study watershed were sprayed by either CRF or NPK (standard fertilizer). In CRF application, total nitrogen (TN) load was 4.9% less than NPK application, however total phosphorus (TP) load was 0.7 % more than NPK application. In CRF application, considering only paddy fields in the study area, TN load was 38.7 % less than NPK application.
Using CRF in paddy fields could be one of the ways to reduce pollutant loadings from agricultural watersheds, however, in order to confirm it, more researches about effects of using CRF are necessary.
목차
등록된 정보가 없습니다.
참고문헌 (32)
참고문헌 신청
Park,M.J. / 1998 / Study on the sediment yield estimation due to land development(Ⅰ) / National Institute for Disaster Prevention :218~226
Shamshad, A / 2008 / Application of AnnAGNPS model for soil loss estimation and nutrient loading for Malaysian conditions / International Journal of Applied Earth Observation and Geoinformation 10:239~252
Siriwardena, L / 2006 / The impact of land use change on catchment hydrology in large catchments: The Comet river, central Queensland, Australia / Journal of Hydrology 326:199~214
엄미정 / 2004 / 관개수질을 고려한 시비가 벼의 생산성과 농업환경에 미치는 영향 / 한국환경농학회지 23(1):7~14
USDA (United States Department of Agriculture) / 1986 / Urban hydrology for small watersheds
Shamshad, A / 2008 / Application of AnnAGNPS model for soil loss estimation and nutrient loading for Malaysian conditions / International Journal of Applied Earth Observation and Geoinformation 10:239~252
Siriwardena, L / 2006 / The impact of land use change on catchment hydrology in large catchments: The Comet river, central Queensland, Australia / Journal of Hydrology 326:199~214
엄미정 / 2004 / 관개수질을 고려한 시비가 벼의 생산성과 농업환경에 미치는 영향 / 한국환경농학회지 23(1):7~14
USDA (United States Department of Agriculture) / 1986 / Urban hydrology for small watersheds
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