농경지 토양유실 및 수질오염물질 유출에 대한 침사구 조성 효과
The Performances of Sediment Trap for Reducing Water Pollutants and Soil Loss from Rainfall Runoff in Cropland
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
BACKGROUND: An intensive farming system may be of the most important source for agricultural non-point source (NPS) pollution, which is a major concern for agricultural water management in South Korea. Various management practices have therefore been applied to reduce NPS loads from upland fields. This study presents performances of sediment trap for reducing NPS and soil loss from rainfall runoff in cropland. METHODS AND RESULTS: In 2018 and 2019, three sediment traps (L1.5 m × W1.0 m × D0.5 m = 0.75 m3 ) and their controls were established in the end of sloped (ca. 3%) upland field planted with maize crops. Over the seasons, runoff water was monitored, collected, and analyzed at every runoff. Soils deposited in sediment traps were collected and weighed at the season end. Sediment traps reduced runoff amount (p<0.05) and NPS concentrations, though the decreased NPS concentrations were not always statistically significant. In addition, sediment traps had a significant prevention effect on soil loss from rainfall runoff in a sloped cropland. CONCLUSION: The results suggest that the sediment trap could be a powerful and the best management practice to reduce NPS pollution and soil loss in a sloped upland field.
Abstract
BACKGROUND: An intensive farming system may be of the most important source for agricultural non-point source (NPS) pollution, which is a major concern for agricultural water management in South Korea. Various management practices have therefore been applied to reduce NPS loads from upland fields. This study presents performances of sediment trap for reducing NPS and soil loss from rainfall runoff in cropland. METHODS AND RESULTS: In 2018 and 2019, three sediment traps (L1.5 m × W1.0 m × D0.5 m = 0.75 m3 ) and their controls were established in the end of sloped (ca. 3%) upland field planted with maize crops. Over the seasons, runoff water was monitored, collected, and analyzed at every runoff. Soils deposited in sediment traps were collected and weighed at the season end. Sediment traps reduced runoff amount (p<0.05) and NPS concentrations, though the decreased NPS concentrations were not always statistically significant. In addition, sediment traps had a significant prevention effect on soil loss from rainfall runoff in a sloped cropland. CONCLUSION: The results suggest that the sediment trap could be a powerful and the best management practice to reduce NPS pollution and soil loss in a sloped upland field.
참고문헌 (13)
- Choi, Y., "Effect of no-till practice on runoff and nonpoint source pollution from an intensively farmed field in Korea", Irrigation and Drainage, 65(S2), pp.175~181 (2016)
- Jang, S. S., "Evaluation of executable best management practices in Haean highland agricultural catchment of South Korea using SWAT", Agricultural Water Management, 180, pp.224~234 (2017)
- Kiyong Kim, "Impacts of Land Use Change and Summer Monsoon on Nutrients and Sediment Exports from an Agricultural Catchment", Water, 10(5), pp.544~ (2018), MDPI AG[DOI]
- Kribaa, M., "Effect of various cultivation methods on the structure and hydraulic properties of a soil in a semi-arid climate", Soil and Tillage Research, 60(1-2), pp.43~53 (2001)
- 이수인, "무경운 밭에서의 비점오염물질 저감효과 분석", 한국농공학회논문집, 57(4), pp.51~59 (2015), 한국농공학회
- Mohammadshirazi, F., "Effects of tillage and compost amendment on infiltration in compacted soils", Journal of Soil and Water Conservation, 71(6), pp.443~449 (2016)
- Shin M., "Application of surface cover materials for reduction of NPS pollution on field-scale experimental plots", Irrigation and Drainage, 65(S2), pp.159~167 (2016)
- 신민환, "소규모 침사구를 이용한 밭의 비점오염원 저감 효과 분석", 한국농공학회논문집, 54(2), pp.27~35 (2012), 한국농공학회[DOI]
- 신민환, "인공강우기에 의한 밭에서의 영양물질 배출특성 모의 - 시비량 및 경사도 변화 -", 한국농공학회논문집, 52(3), pp.31~38 (2010), 한국농공학회
- Shin, M. H., "Effect of surface cover on the reduction of runoff and agricultural NPS pollution from upland fields", Paddy and Water Environment, 11(1-4), pp.493~501 (2013)
- Tebrügge, F., "Reducing tillage intensity—a review of results from a long-term study in Germany", Soil and tillage research, 53(1), pp.15~28 (1999)
- Lili Wang, "Climate Change Impacts on Nutrient Losses of Two Watersheds in the Great Lakes Region", Water, 10(4), pp.442~ (2018), MDPI AG[DOI]
- Zhang, G. S., "On-farm assessment of soil erosion and non-point source pollution in a rain-fed vegetable production system at Dianchi lake’s catchment, southwestern China", Nutrient cycling in agroecosystems, 96(1), pp.67~77 (2013)