National Institute of Environmental Research (NIER) has proposed new methodology for estimating unit load in order to overcome the limitations of past unit load based on short-term and local area based data. In the case of agricultural land, however, the results presented by NIER are still limited because of various agricultural activities and farmland characteristics. In this study, liquid manure treated paddy field and organic farming upland were selected for considering agricultural diversity. Four different methods for evaluating unit load were used for comparing previous research results. The results of different methods presented various trends compared with those of existing studies. Paddy field treated liquid manure was 1.3 times higher for T-N load and 3.1 times for T-P load than conventional paddy field. Conventional upland was 4.4 times higher for T-N load and 1.8 times higher for T-P load than organic farming upland. In the case of non-conventional farmland, this study showed different values with the unit loads presented by NIER. This implies that it is necessary to review and apply the unit loads considering various agricultural conditions when establishing environmental policy and rural planning.

I. 서 론
 II. 재료 및 방법
  1. 대상지구
  2. 수문 및 수질 조사
  3. 원단위 산정방법
 III. 결과 및 고찰
  1. 수문분석
  2. 수질분석
  3. 원단위분석
 IV. 요약 및 결론
 References

• 소현철(전북대학교 지역건설공학과, Department of Rural Construction Engineering, Chonbuk National University) | Hyunchul So
• 장태일(전북대학교 지역건설공학과, Department of Rural Construction Engineering, Chonbuk National University) | Taeil Jang Corresponding Author
• 홍승길(농촌진흥청 국립농업과학원, National Academy of Agricultural Science, Rural Development Administration) | Seung-Gil Hong