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Analysis of Spatial Distribution Characteristics in the Natural Environmental of Oreum Using the Likelihood Ratio at the Mid-mountain Area of Jeju Island

  • Journal of the Association of Korean Geographers
  • Abbr : JAKG
  • 2019, 8(2), pp.193~203
  • DOI : 10.25202/JAKG.8.2.7
  • Publisher : Association of Korean Geographers
  • Research Area : Social Science > Geography
  • Received : July 10, 2019
  • Accepted : July 31, 2019
  • Published : August 31, 2019

Yoon, Hye-Yeon ORD ID 1,  Dong-Ho Jang 2

1공주대학교 지리학과
2공주대학교

Accredited

ABSTRACT

This study analyzed the natural environmental spatial distribution characteristics of Oreum, located in the mid-mountain area of Jeju Island by employing a likelihood ratio based on Bayesian probability. The result of the likelihood ratio did not display a clear correlation between the aspect, effective soil depth, geologic and Oreum. However, a high correlation was displayed with the elevation, slope, soil drainage, forest type, and land-cover. The result of ascertaining in the mid-mountain area based on thereon demonstrated that the greatest distribution is seen mostly at a elevation of 300-400m (33.8%). Eventually Oreum was highly distributed at the angle of 20-30° (48.3%) and with a South-Southeast direction (26.8%). Furthermore, the soil drainage level of Oreum was found to be well drained at 70.2% and the effective soil depth was highly distributed at 50-100cm (66.0%). In terms of forest type, the highest distribution of coniferous plantain (27.8%) and broad-leaved forest (24.0%) was seen in Oreum, and in terms of geological map was shown trachy-basalt (Ⅲ) of Quaternary (43.6%) is the highest distribution. Moreover, the land-cover of Oreum was highly distributed of forest areas (79.9%) and grass land (19.1%) individually. The likelihood ratio results to be calculated and would be used as basic data for analyzing the spatial distribution characteristics of Oreum using a GIS spatial integration model.

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This paper was written with support from the National Research Foundation of Korea.
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