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2024 Vol.66, Issue 5 Preview Page
Evaluation of Non-Point Pollution Loads in Corn-Autumn Kimchi Cabbage Cultivation Areas by Fertilizer Application Levels Using the APEX Model

APEX 모델을 이용한 옥수수-가을배추 재배지의 시비 수준별 비점오염 부하량 평가

Jong-Mun Leea
,
So-Jin Yeobb
,
Sang-Min Junc
,
Byungmo Leed
,
Yerin Yangef
,
Soon-Kun Choig†
이 종문a
,
엽 소진b
,
전 상민c
,
이 병모d
,
양 예린ef
,
최 순군g†
aPost Doctoral Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences
bResearcher, Climate Change Assessment Division, National Institute of Agricultural Sciences
cResearcher, Climate Change Assessment Division, National Institute of Agricultural Sciences
dSenior Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences
eCollaborative Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences
fMaster Course, Department of Agronomy, Jeonbuk National University
gResearcher, Climate Change Assessment Division, National Institute of Agricultural Sciences
a국립농업과학원 기후변화평가과 박사후 연구원
b국립 농업 과학원 기후 변화 평가과 연구원
c국립 농업 과학원 기후 변화 평가과 연구원
d국립농업과학원 기후변화평가과 선임 연구원
e국립 농업 과학원 기후 변화 평가과 공동 연구원
f전북대학교 농경제학과 석사 과정
g국립 농업 과학원 기후 변화 평가과 연구원
† Corresponding author Tel.: +82-63-238-2504, Fax: +82-63-238-3823 E-mail: soonkun@korea.kr
2024. pp. 15-27
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Abstract

Agriculture is recognized as an important anthropogenic cause of non-point source loads. Improved understanding of non-point source loads according to fertilization practices can promote climate change and eutrophication mitigation. Thus, this study evaluated the impact of conventional and standard fertilization practices on non-point pollution (NPP) loads in a dual-cropping system, utilizing the Agricultural Policy/Environmental eXtender (APEX) model. Our research objectives were twofold: firstly, to calibrate and validate the APEX model with observed data through experiments from 2018 to 2023; and secondly, to compare the NPP loads under conventional and standard fertilization practices. The model calibration and validation showed satisfactory performance in simulating nitrogen (N) and phosphorus (P) loads, illustrating the model’s applicability in a Korean agricultural setting. The simulation results under conventional fertilization practices revealed significantly higher NPP loads compared to the standard fertilization, with P loads under conventional practices being notably higher. Our findings emphasize the crucial role of recommended fertilization practices in reducing non-point source pollution. By providing a quantitative assessment of NPP loads under different fertilization practices, this study contributes valuable information to sustainable nutrient management in agricultural systems facing the dual challenges of climate change and environmental conservation.

Keywords
APEX model
fertilization practices
non-point pollution
sustainable agriculture
water quality
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 66
  • No :5
  • Pages :15-27
  • Received Date : 2024-04-15
  • Revised Date : 2024-06-26
  • Accepted Date : 2024-07-16
  • DOI :https://doi.org/10.5389/KSAE.2024.66.5.015
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