Journal of Korean Society of Forest Science (한국산림과학회지)
- Volume 83 Issue 3
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- Pages.322-330
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- 1994
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- 2586-6613(pISSN)
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- 2586-6621(eISSN)
Application of GIS to the Universal Soil Loss Equation for Quantifying Rainfall Erosion in Forest Watersheds
산림유역의 토양유실량(土壤流失量) 예측을 위한 지리정보(地理情報)시스템의 범용토양유실식(汎用土壤流失式)(USLE)에의 적용
- Lee, Kyu Sung (Forestry Research Institute)
- 이규성 (임업연구원)
- Received : 1994.03.07
- Published : 1994.09.30
Abstract
The Universal Soil Loss Equation (USLE) has been widely used to predict long-term soil loss by incorporating several erosion factors, such as rainfall, soil, topography, and vegetation. This study is aimed to introduce the LISLE within geographic information system(GIS) environment. The Kwangneung Experimental Forest located in Kyongki Province was selected for the study area. Initially, twelve years of hourly rainfall records that were collected from 1982 to 1993 were processed to obtain the rainfall factor(R) value for the LISLE calculation. Soil survey map and topographic map of the study area were digitized and subsequent input values(K, L, S factors) were derived. The cover type and management factor (C) values were obtained from the classification of Landsat Thematic Mapper(CM) satellite imagery. All these input values were geographically registered over a common map coordinate with
토양침식에 영향을 미치는 강우, 토양, 지형, 식생 등을 종합적으로 고려하여 단위면적당 토양유실량(土壤流失量)을 예측하는 범용토양유실식(汎用土壤流失式)(Universal Soil Loss Equation)을 지리정보(地理情報)시스템(GIS)에 접목시켰다. 경기도 광릉 임업연구원 시험림을 연구지역으로 선정하여 이곳에서 지난 12년 동안 측정된 시간별 강우자료를 이용하여 강우인자(强雨因子)(R) 값을 산출하였고, 토양도, 지형도, 위성자료 등을 이용하여 USLE 계산에 필요한 다른 인자들의 값을