Browse > Article
http://dx.doi.org/10.5389/KSAE.2010.52.5.027

Estimating Nutrients Delivery Ratios at the Subwatershed Scale -A Case Study at the Bochung-A Watershed-  

Jeon, Ji-Hong (안동대학교 환경공학과)
Choi, Dong-Hyuk (안동대학교 환경공학과)
Lim, Kyung-Jae (강원대학교 지역건설공학과)
Kim, Tae-Dong (안동대학교 환경공학과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.52, no.5, 2010 , pp. 27-35 More about this Journal
Abstract
The characteristics of delivered nutrient loads were analyzed and the regression equations to estimate delivery ratios of nutrients (TN and TP) were developed using HSPF simulation results at six subwatersheds within the Bochung A unit watershed during 1998-2007. TN delivery ratio was higher than TP delivery ratio because significant amounts of TP was considered to be attached at soil as ${PO_4}^-$ during delivery process from discharged point of nutrient source to main stream. As a results of correlation analysis, factors related to geomorphic characteristics had not statistical correlation with TN and TP delivery ratios. TN loading rate from living and specific stream flow had statistical negative and positive correlation, respectively, with TN delivery ratio. TP loading rates from all sources and from land cover and specific stream flow had statistical negative, negative and positive correlation, respectively. The specific stream flow represents the most strong correlation with nutrient delivery ratios. The regression equations to estimate delivery ratios for TN and TP were developed by including statistical correlated factors and showed high efficiency of 0.98 and 0.95 of coefficient of determination for TN and TP, respectively.
Keywords
Delivery ratio; delivery ratio duration curve; regression equation; TN; TP;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
연도 인용수 순위
1 Yoon, Y. S., J. J. Yu, M. S. Kim, and H. J. Lee, 2006. Computation and assessment of delivery pollutant loads for the streams in the Nakdong River Basin. Journal of Korean Society on Water Quality 22(2): 580-588 (in Korean).
2 Jeon, J. H., C. G. Yoon, and J. H. Han, 2001. Analysis of relationships among the pollutant concentrations in non-urban area. Korean Journal of Limnology 34(3): 215-222 (in Korean).   과학기술학회마을
3 Jung, J. W., K. S. Yoon, S. H. Joo, W. Y. Choi, Y. W. Lee, D. H. Rhew, S. W. Lee, and N. I. Chang, 2009. Estimation of pollutant loads delivery ratio by flow duration using regression equation in Hwangryong A Watershed. Journal of the Korean Society of Agricultural Engineers 51(6): 25-31 (in Korean).   과학기술학회마을   DOI
4 Kim, C. G. and N. W. Kim, 2009. Investigation on the pollutant delivery characteristics using physically based watershed model. Journal of Korean Society on Water Quality 25(2): 256-267 (in Korean).
5 Keem, M. S., H. S. Shin, J. H. Park, and S. Kim, 2009. Empirical equation for pollutant loads delivery ratio in Nakdong River TMDL unit watershed. Journal of Korean Society on Water Quality 25(4): 580-588 (in Korean).
6 National Institute of Environmental Research, 2008. Guideline of total maximum daily load. National Institute of Environmental Research (in Korean)
7 Park, J. H., D. S. Kong, and K. S. Min, 2007. Development of the empirical model for estimating the delivered pollutant loads considering geomorphic and hydraulic characteristics. Journal of Korean Society on Water Quality 23(6): 913-919 (in Korean).
8 Ryden, J. C., J. K. Syers and R. F. Harris, 1972. Potential of an eroding urban soil for the phosphorous enrichment of streams: I. Evaluation of methods. Journal of Environmental Quality 1: 430-434.   DOI
9 Shon, T. S., J. B. Park, and H. S. Shin, 2009. A study on estimation of the delivery ratio by flow duration in a small-scale test bed for Managing TMDL in Nakdong River. Journal of Korean Society on Water Quality 25(5): 792-802 (in Korean).
10 Choi, D., H. S. Shin, Y. S. Yoon, and S. Kim, 2009. The simulation of nutrients using SWAT　model and its application to estimate delivery ratio. Journal of Korean Society on Water Quality 25(3): 375-385 (in Korean).
11 Jeon, J. H., D. Choi, K. J. Lim, and T. D. Kim, 2010. Auomatic calibration of stream flow and nutrient laods using HSPF-PEST at the Bochung A Watershed. Korean Society of Agricultural Engineers 52(5): 77- 86 (in Korean).   DOI