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NTIS 바로가기한국지반환경공학회논문집 = Journal of the Korean Geoenvironmental Society, v.19 no.12, 2018년, pp.15 - 23
김성원 (Department of Civil Engineering, Chungnam National University) , 정안철 (International Water Resources Research Institute, Chungnam National University) , 이기하 (Department of Construction & Disaster Prevention Engineering, Kyungpook National University) , 정관수 (Department of Civil Engineering, Chungnam National University)
The occurrence of soil erosions in Korea is mostly driven by flowing water which has a close relationship with rainfalls. The soil eroded by rainfalls flows into and deposits in the river and it polluted the water resources and making the rivers become difficult to be managed. Recently, the frequenc...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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강우로부터 발생하는 토양침식은 어떠한 영향을 주는가? | 우리나라에서 발생하는 대부분의 토양침식은 물에 의한 토양침식이며 강우와 밀접한 관계를 가진다. 강우로부터 발생하는 토양침식은 토지자원의 손실을 발생시키고 이후 하천에 유입되고 퇴적되어 하천수자원의 관리 및 이용에 많은 어려움을 주고 있다. 최근 기후변화의 영향으로 우리나라에서는 30mm/hr 이상의 집중호우의 발생횟수가 증가하고 있어 단기간에 토양침식이 발생할 가능성이 높아지고 있다. | |
토양침식이란 무엇인가? | 토양침식은 강우, 바람, 습도, 기온 등의 환경적인 인자들과 지표유출, 토양특성, 사면경사 및 길이, 식생피복 및 토지이용상태 등의 지형학적 인자들의 복합적 작용에 의한 물리적인 현상이다. 사막과 같은 건조한 지역을 제외한 일반 적인 영역에서 나타나는 토양침식은 물에 의한 것으로 환경적 인자인 강우의 특성에 의해 결정된다. | |
토양체에 전달되는 강우에너지의 변화는 어떤 연관성이 있는가? | 여러 연구자들은 실험을 통하여 동일한 강우량이 주어질때 강우강도를 변화시켜 토양체에 전달되는 강우에너지에 변화에 대한 실험이 많이 진행되었다. 그 결과, 유출되는 토사량은 강우강도와 상관성이 높은 것으로 분석되었고(Young & Wlersma, 1973), 이는 토양침식이 강우량보다 강우에 너지에 많은 영향을 받는다는 것을 의미한다. |
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