Quantitative Approach of Soil Prediction using Environment Factors in Jeju Island

• Published in: Korean Journal of Soil Science and Fertilizer Vol. 45; no. 3
• Main Authors: Moon, K.H., Agricultural Research Center for Climate Change, NIHHS, RDA, Jeju, Republic of Korea, Seo, H.H., Agricultural Research Center for Climate Change, NIHHS, RDA, Jeju, Republic of Korea, Song, K.C., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Sonn, Y.K., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea, Hyun, H.N., Jeju National University, Jeju, Republic of Korea
• Format: Journal Article
• Language: Korean
• Published: 01.06.2012
• Subjects: GENESIS DEL SUELO; PEDOGENESE; SOIL GENESIS; Soil series estimation; Volcanic ash soils
• ISSN: 0367-6315

Parent material, climate, topography, biological factors, and time are considered five soil forming factors. This study was conducted to elucidate the effects of several environment factors on soil distribution using quantitative analysis method, called soil series estimation algorithm in the soils of Jeju Island. We selected environment factors including mean temperature, annual precipitation, surface geology, altitude, slope, aspect, altitude difference within 1 ㎢ area, topographic wetness index, distance from the shore, distance from the mountain peak, and landuse for a quantitative analysis. We analyzed the ranges of environment factors for each soil series and calculated probabilities of possible-soil series for certain locations using estimation algorithm. The algorithm can predicted exact soil series on the soil map with correctness of 33% on 1∨st ranking, 62% within 2∨nd ranking, 74% within 5∨th ranking after estimating using randomly extracted environment factors. In predicted soil map, soil sequences of Entisols-Alfisols-Andisols on northern area and Alfisols-Ultisols-Andisols on western area can be suggested along increasing altitude. More modeling studies will be needed for the genesis process of soils in Jeju Island.