- Volume 16 Issue 2
The water quality from nonpoint source run off results from different land use types has been studied. The construction of a buffer strip is one method of nonpoint source pollutant control. The Soil and Water Assessment Tool (SWAT) model has been applied to estimate the pollutant removal through the buffer strip. When the non-business land has been changed into grass to form a buffer-strip, the change of land use effects the results of the model according to measures of the water quality. The data from a water level station within the watershed in the years 2006 and 2007 was used for calibration and validation of the model. Under the rainfall conditions in 2007, the removal rates of SS, BOD, TN, TP were 11.5%, 9.5%, 1.2%, and 4.5%, respectively. During the rainy days, the removal rates at the buffer strip were 92.3% of SS, 91.2% of BOD, 82.4% of TN, and 83.5% of TP. The pollutants from nonpoint sources were effectively removed by over 80% as they passed through the buffer strips. Rainfall resulted in soil erosion, which led to an increase in the SS concentration, therefore, the construction of buffer strips protected the streams from SS inflows. Since TN concentrations are affected by the inflows of ground water and the N concentration of the rainfall, the removal rate of TN was relatively lower than for the other pollutants.
Buffer strip;Land use;Nonpoint sources;SWAT
- Kim TG, Hong SP; Geum River Environment Research Center. Analysis of pollutants discharge in watershed using the nonpoint source modeling. Okcheon: Geum River Environment Research Center; 2006.
- Walker DJ, Calkins BL, Hamilton JR. Marginal cost effectiveness analysis for agricultural nonpoint source water quality control. J Soil Water Conservat. 1993;48:368-372.
- Borin M, Bigon E. Abatement of NO3-N concentration in agricultural waters by narrow buffer strips. Environ. Pollut. 2002;117:165-168. https://doi.org/10.1016/S0269-7491(01)00142-7
- Mersie W, Seybold CA, McNamee C, Lawson MA. Abating endosulfan from runoff using vegetative filter strips: the importance of plant species and flow rate. Agr. Ecosyst. Environ. 2003;97:215-223. https://doi.org/10.1016/S0167-8809(03)00035-5
- Leeds-Harrison PB, Quinton JN, Walker MJ, Sanders CL, Harrod T. Grassed buffer strips for the control of nitrate leaching to surface waters in headwater catchments. Ecol. Eng. 1999;12:299-313. https://doi.org/10.1016/S0925-8574(98)00075-5
- Kim JH. Effects of vegetated buffer strips on water quality using AGNPS model [dissertation]. Seoul: Seoul National University; 2000.
- Han HJ. Design of the riparian butter zone using GIS and AHP theory [dissertation]. Seoul: Ewha Womans University; 2000.
- Hong JP. Calculation of the width of riparian vegetated buffer zones for the protection of water quality [dissertation]. Seoul: Seoul National University; 2000.
- Netisch SL, Arnold JG, Kiniry JR, Srinvasan R, William JR. Soil and water assessment tool input/output file documentation version 2009. Technical Report No. 365. College Station, TX: Texas Water Resource Institute; 2009.
- Abbaspour KC, Yang J, Maximov I, et al. Modelling hydrology and water quality in the pre-alpine/alpine Thur watershed using SWAT. J. Hydrol. 2007;333:413-430. https://doi.org/10.1016/j.jhydrol.2006.09.014
- Migliaccio KW, Chaubey I, Haggard BE. Evaluation of landscape and instream modeling to predict watershed nutrient yields. Environ. Model. Software 2007;22:987-999. https://doi.org/10.1016/j.envsoft.2006.06.010
- Sahu M, Gu RR. Modeling the effects of riparian buffer zone and contour strips on stream water quality. Ecol. Eng. 2009;35:1167-1177. https://doi.org/10.1016/j.ecoleng.2009.03.015
- Vache KB, Eilers JM, Santelmann MV. Water quality modeling of alternative agricultural scenarios in the U.S. Corn Belt. J. Am. Water Resour. Assoc. 2002;38:773-787. https://doi.org/10.1111/j.1752-1688.2002.tb00996.x
- Jang JH, Yoon CG, Jung KW, Kim HC. Evaluation of the impacts of water quality management in Kyongan Stream watershed using SWAT model. J. Korean Soc. Water Qual. 2010;26:387-398.
- Ryu JC, Kang HW, Kim NW, et al. Analysis of total nitrogen reduction efficiency with established riparian buffer system using SWAT-REMM model in Bonggok watershed. J. Korean Soc. Water Qual. 2010;26:910-918.
- Kim CG, Kim NW. Characteristics of pollutant loads according to types of sources for the Chungju Dam watershed. J. Korean Soc. Water Qual. 2008;24:465-472.
- National Institute of Environmental Research. Water Quality Division. [Internet]. Incheon: NIER, Ministry of Environment; c2010 [cited 2010 Sep 10]. Available from: http://water.nier.go.kr/smat.
- Barlund I, Kirkkala T, Malve O, Kamari J. Assessing SWAT model performance in the evaluation of management actions for the implementation of the Water Framework Directive in a Finnish catchment. Environ. Model. Software 2007;22:719-724. https://doi.org/10.1016/j.envsoft.2005.12.030
- Eun YH, Geun KT. A study on problems about estimation of TN delivery ratio using watershed model. J. Korean Soc. Environ. Technol. 2010;11:235-240.
- Schilling K, Zhang YK. Baseflow contribution to nitrate-nitrogen export from a large, agricultural watershed, USA. J. Hydrol. 2004;295:305-316. https://doi.org/10.1016/j.jhydrol.2004.03.010
- Dosskey M, Schultz D, Isenhart T. A riparian buffer design for cropland. Agroforestry Notes 5. Lincoln, NE: USDA Natural Resources Conservation Service; 1997.
- Do cormorant colonies affect local fish communities in the Baltic Sea? vol.69, pp.6, 2012, https://doi.org/10.1139/f2012-042