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NTIS 바로가기Journal of Korea Water Resources Association = 한국수자원학회논문집, v.51 no.9, 2018년, pp.783 - 793
이준학 (육군사관학교 토목환경학과)
The purpose of this study to present updated regional annual mean rainfall erosivity data in the Republic of Korea. In 2012, Ministry of Environment in Korea published the notice about investigation and survey procedure for the amount of topsoil erosion and adopted USLE (Universal Soil Loss Equation...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
강우침식인자는 무엇인가? | 강우침식인자(rainfall erosivity)는 20년 이상의 연평균 토양침식량을 추정하기 위한 범용토양유실공식(Universal Soil Loss Equation, USLE) 및 개정범용토양유실공식(Revised Universal Soil Loss Equation, RUSLE)의 매개변수 중에 하나로서 강우가 유발할 수 있는 잠재적인 가식성지표(erosive index)를 나타낸다(Wischmeier and Smith, 1978; Renard et al., 1997). | |
USLE는 무엇인가? | , 1997). 본 연구는 대규모 개발 사업에 따른 환경영향평가나 사전환경성검토, 사전재해영향평가, 댐의 비유사량 산정, 장기간에 걸친 연평균 토양유실량 추정 등에 적용되어 온 범용 토양유실공식(Universal Soil Loss Equation, USLE) 또는 개정 범용토양유실공식(Revised Universal Soil Loss Equation, RUSLE) 모델에 입력자료로 사용되는 한국의 지역별 연평균 강우침식인자 값을 갱신하기 위한 것이다. | |
USLE 또는 RUSLE의 경험적 추정 식은 무엇인가? | A = RKLCSP (1) 여기서, A는 연평균 토양침식량, R는 강우침식인자, K는 토양침식성 인자, L은 경사길이인자, C는 경사도 인자, P는 식생피복인자, P는 보전관리인자를 의미한다. 강우침식인자(rainfall erosivity)는 강우로 인해 발생하는 토양침식의 정도 를 숫자로 나타낸 값으로 호우사상별 강우에너지와 30분 최대 강우강도의 곱(단위: MJmm/ha/hr/yr)으로 정의된다. |
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