초록

AI-Helper

우리나라의 정밀토양(情密土壤) 조사(調査)에서 밝혀진 경사지(傾斜地) 밭 토양(土壤) 및 산림지(山林地) 토양중(土壤中) 83개(個) 토양통(土壤統)을 대상(對象)으로 토양식성인자(土壤蝕性因子) K치(値)를 Wischmeier의 nomograph를 이용(利用)하여 조사(調査)한 결과(結果) 다음과 같다. 토양(土壤) 침식성(浸蝕性) 인자(因子) K치(値)는 0.05 내지(乃至) 0.51의 범위(範圍)에 있었으며, 평균(平均) 0.27이었다. K치(値)를 토양아군별(土壤亞群別)로 보았을 때, Udipsamments, Umbric Dystrochrepts, Lithic 그리고 Typic Haplumbrepts 등(等)은 0.1 이하(以下)로 낮았으며, Aquic Hapludalfs, Aquic Fragiudalfs 등(等) 0.4이상(以上)으로 높았으며, Udorthents, Dystrochrepts, Eutrochrepts, Hapludalfs, Hapludults, Hapludolls 등(等)의 Typic, Lithic, Fluventic, Dystric 및 Ultic 아군등(亞群等)은 0.1내지(乃至) 0.4이었다. K치(値)는 같은 토성(土性)에서 차이(差異)가 심(甚)하였으나, 대체(大體)로 토성(土性)이 미세(微細)할수록 높은 경향(傾向)이었다. 또 미세(微細)의 함량(含量)이 많을 수록, 배수조건(排水條件)이 불량(不良)할수록 높았다. K치(値)는 유기물(有機物) 함량(含量) 3% 내지(乃至) 13%범위(範圍)에서 역상관(逆相關)의 경향(傾向)이었으며, 3% 이하(以下)에서는 그 상관(相關)이 없었다.

Abstract ▼ AI-Helper

This study is conducted to find out soil erodibility factor K value which is one of the most important factor to estimate soil loss using a new method for predicting K value, the nomograph, that was first proposed by Whischmeier. K values for 83 soil series including upland and forest soils in Korea...

This study is conducted to find out soil erodibility factor K value which is one of the most important factor to estimate soil loss using a new method for predicting K value, the nomograph, that was first proposed by Whischmeier. K values for 83 soil series including upland and forest soils in Korea were checked up. The result were as follows: The average K value was 0.27 with ranging between 0.05 and 0.51. K values were higher for finer textured soils than for coarser textured soils widely ranged in a textural class, and higher for silty textured and low permeable soils. K value was correlated inversely with organic matter content in range of 3 to 13 percent, but the tendency was not related in range of lower than 3 percent.