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J Korean Soc Environ Eng > Volume 41(6); 2019 > Article
J Korean Soc Environ Eng 2019;41(6): 311-320. doi: https://doi.org/10.4491/KSEE.2019.41.6.311
HSPF모형에서 논 모의 기능개선을 위한 Paddy-RCH 개발
정신혜1, 이한필1, 황하선2, 윤춘경1
1건국대학교 환경보건과학과
2국립환경과학원 물환경연구부
Study on Development of Paddy-RCH Method to Consider Discharge Characteristics of Paddy Field in Watershed Model HSPF
Shin Hye Jung1, Han-Pil Rhee1, Ha Sun Hwang2, Chun Gyeong Yoon1
1Department of Environmental Health Science, Konkuk University
2Water Environmental Research Department, National Institute of Environmental Research
Corresponding author  Chun Gyeong Yoon ,Tel: 02-450-3747, Fax: 02-446-2543, Email: chunyoonenv@gmail.com
Received: January 23, 2019;  Revised: March 12, 2019;  Accepted: March 12, 2019.  Published online: June 30, 2019.
ABSTRACT
In the implementation of the Total Pollution Load Control (TPLC), in order to reasonal consider the reduction-plan for agricultural non-point sources (agNPS), be properly predictable. In Korea, agNPS caused by paddy fields occupies a large proportion, but general watershed models have limitations in simulating the water-balance and water quality mechanisms from paddy fields. In this study, the HSPF Paddy-RCH method that can simulate mechanisms of paddy in the watershed model was developed by connecting the PERLND module and the RCHRES module, and reconstructing the mass transfer path between modules. And the applicability of Paddy-RCH methods was evaluated by simulation on test paddies. As a result of calibration and verification, water-depth (ΔS) was evaluated as Very-Good, and runoff was Good (-13.97%) ~ Fair (-22.68%). In the water-quality prediction, BOD and T-N were evaluated as Very-Good, and T-P was Very-Good (2.62%) ~ Good (17.95%). It was evaluated that simulated results can represent the tendency of the measured value relatively well. The paddy-RCH method can be advantageous in that it can simultaneously grasp the influence of paddy fields and watershed size according to farming methods, can link with existing prediction methods by using a model that can be provided to everyone.
Key Words: TPLC, Agricultural Non-point Sources, Watershed model, HSPF, Paddy
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