하천관개지역 광역논에서의 영양물질의 물질수지
Nutrient Balance in the Paddy Fields Watershed with a Source of River Water
2
조회
0
다운로드
7
인용
0
참고문헌
키워드
초록
The objective of this research was to investigate concentration and load of nutrients such as total nitrogen (TN), nitrate nitrogen (NO3-N) totalphosphorous (TP), and phosphate phosphorous (PO4-P) in a 23.4-ha paddy fields watershed with river water source. Water samples for irrigation water,drainage water, ponded water and groundwater were collected, and irrigation and drainage water were measured at 5∼10 day intervals during normal daysand at 2∼6 hours intervals during three storm events. The amount of irrigation water in the study area was over 2,000 mm, which is almost identical tothat in the area irrigated from a large reservoir but much more than that in the area irrigated from a pumping station. Mean flow-weighted concentrationsof TN and TP in irrigation water were 2.8 and 0.15 mg/L, respectively, higher than those in the area irrigated from a large reservoir or a pumping station. The ratios of irrigation load to total inflow load for TN and TP were 88 %, and the ratios of surface outflow load to total outflow load for TN and TP wereover 90 %, indicating that total nutrient load may be greatly affected by water management. The nutrient loads per area in the study area were estimatedas TN 21.1 kg/ha and TP 1.1 kg/ha. Especially, the TP load per area in the study area was smaller than that in the area irrigated from a large reservoir ora pumping station. This may be because outflow load is not high likely due to sedimentation of particulate P and irrigation water load is high due to highTP concentration in irrigation water and high amount of irrigation water.
Abstract
The objective of this research was to investigate concentration and load of nutrients such as total nitrogen (TN), nitrate nitrogen (NO3-N) totalphosphorous (TP), and phosphate phosphorous (PO4-P) in a 23.4-ha paddy fields watershed with river water source. Water samples for irrigation water,drainage water, ponded water and groundwater were collected, and irrigation and drainage water were measured at 5∼10 day intervals during normal daysand at 2∼6 hours intervals during three storm events. The amount of irrigation water in the study area was over 2,000 mm, which is almost identical tothat in the area irrigated from a large reservoir but much more than that in the area irrigated from a pumping station. Mean flow-weighted concentrationsof TN and TP in irrigation water were 2.8 and 0.15 mg/L, respectively, higher than those in the area irrigated from a large reservoir or a pumping station. The ratios of irrigation load to total inflow load for TN and TP were 88 %, and the ratios of surface outflow load to total outflow load for TN and TP wereover 90 %, indicating that total nutrient load may be greatly affected by water management. The nutrient loads per area in the study area were estimatedas TN 21.1 kg/ha and TP 1.1 kg/ha. Especially, the TP load per area in the study area was smaller than that in the area irrigated from a large reservoir ora pumping station. This may be because outflow load is not high likely due to sedimentation of particulate P and irrigation water load is high due to highTP concentration in irrigation water and high amount of irrigation water.
참고문헌 (16)
- Cassman, K. G., "Nitrogen mineralization as affected by soil moisture, temperature and depth", Soil Science Society of America Journal, 44(6), pp.1233~1237 (1980)
- Feng, Y. W., "Characteristics and behavior of nutrients in a paddy field area equipped with a recycling irrigation system", Agricultural Water Management, 68(1), pp.47~60 (2004)
- Hama, T., "Reducing the phosphorus effluent load from a paddy-field district through cyclic irrigation", Ecological Engineering, 54, pp.107~115 (2013)
- 장훈, "논과 밭 지하수의 영양물질 농도 특성", 한국농공학회논문집, 53(6), pp.67~74 (2011), 한국농공학회
- Kim, J. S., "Characteristics of pollutants concentrations at paddy field areas during irrigation periods", J. of the Korean Society of Agricultural Engineers, 43(6), pp.163~173 (2001)
- Kim, J. S., "Nutrient runoff from a Korean rice paddy watershed during multip1e storm events in the growing season", Journal of Hydrology, 327, pp.128~139 (2006)
- Kunimatsu, T., "Analysis of River Pollution Model", pp.50~60 (1989), Kibodo Press
- Report on Unit Load of Nonpoint Source Pollutants, "Ministry of Environment.", ~ (1995)
- Standard Methods for Water Quality, "Ministry of Environment.", 199~209 (1997)
- Oh, S. Y., "Unit loads of pollutants in a paddy fields area with large-scaled plots during irrigation seasons", J. of the Korean Society of Agricultural Engineers, 44(2), pp.136~147 (2002)
- 오광영, "농촌 소유역 유출수에서의 영양염류의 거동", 한국농공학회논문집, 51(2), pp.51~57 (2009), 한국농공학회
- 송정헌, "저수지 관개 광역 논의 영양물질 수지 분석", 한국농공학회논문집, 55(6), pp.167~175 (2013), 한국농공학회
- Takeda, I., "Pollutants balance of a paddy field area and its loadings in the water system", Trans. of the Japanese Society of Irrigation, Drainage and Land Reclamation, 153, pp.62~72 (1991)
- Walbridge, M. R., "Phosphorous retention in non-tidal palusrine forested wetlands of the mid-Atlantic region", Wetlands, 13(2), pp.84~94 (1993)
- Yoon, C. G., "Characteristics of pollutant loading from paddy field area with groundwater irrigation", J. of the Korean Society of Agricultural Engineers, 44(5), pp.116~126 (2002)
- Yoon, K. S., "Water and nutrient balance of paddy field irrigated from a pumping station during cropping period", J. of the Korean Society of Rural Planning, 8(1), pp.15~25 (2002)