Journal of Environmental Science International pISSN: 1225-4517 eISSN: 2287-3503 29(12); 1249~1260; December 2020 https://doi.org/10.5322/JESI.2020.29.12.1249 1) 1. 서 론 하천으로 유입되는 오염물질은 발생원에 따라 크게 점오염원과 비점오염원으로 구분할 수 있다. 점오염원은 가정하수 등과 같이 일정한 지점에서 일정한 양이 발생 되어 강우에 따라 배출량에 큰 변동이 없는 오염원이다. 반면, 비점오염원은 강우 시 지표면 유출수와 함께 유출 되는 오염물질로 정량화가 어렵고 일간, 계절 간 배출량 변화가 큰 특징을 가지고 있다(Choi and Shin, 2002). 제2차 비점오염원 종합대책에 의하면 전체 오염원 중 Received 22 September, 2020; Revised 23 November, 2020; Accepted 23 November, 2020 * Corresponding author : Seong-woo Jeon, Department of Environ -mental Science & Ecological Engineering, Korea University, Seoul 02841, Korea Phone : +82-2-3290-3043 E-mail : eepps_korea@korea.ac.kr ⓒ The Korean Environmental Sciences Society. All rights reserved. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ORIGINAL ARTICLE 토지피복지도를 활용한 농업비점오염원 오염부하량 산정에 관한 연구 유지은 김윤지 성현찬 1) 이경일 최지용 2) 전성우 * 고려대학교 환경생태공학과, 1) 고려대학교 리질리언스연구원, 2) 서울대학교 그린바이오 과학기술원 Method for Calculating the Pollution Load Amount of Agricultural Non-Point Sources Using Land Cover Map Yu Jieun, Kim Yoonji, Sung Hyun-Chan 1) , Lee Kyung-il, Choi Ji-yong 2) , Jeon Seung-woo * Department of Environmental Science & Ecological Engineering, Korea University, Seoul 02841, Korea 1) Ojeong Resilience Institute, Korea University, Seoul 02841, Korea 2) Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea Abstract Non-point source pollutants have characteristics the render them difficult to manage owing to the uncertainty of flow paths. As agricultural non-point sources account for more than 57% of non-point source pollutants, the necessity for management is increasing. This study examines the possibility of utilizing land cover maps to suggest a more appropriate method of setting management priority for agricultural non-point sources in the Daecheong Lake area and draws implications by comparing the results derived using the cadastral map, as mentioned in the TMDL Basic Policy. To define the prioritized areas for management, the pollution load was calculated for each subbasin using the formula from the TMDL technical guidelines. As a result, the difference in the average pollution load between the land cover map and cadastral map ranged from 11.6% to 21% among the subbasins. In almost all subbasins, there were differences in the ranking of management priorities depending on the land information that was used. In addition, it was found that it was reasonable to use the level 3 land cover map to calculate the load generated by the land system for examining the implementation goals and methods of each data and comparing them with satellite images. Key words : Land cover map, Pollution load amount, Daecheong lake area, Agricultural non-point source