Natural-Scientific Approach for Natural Conservation Using GIS
Purpose and Method of the Study
Purpose of the Study: The vegetation is the important element, which constitutes the ecosystem, due to its
disaster-preventing important ability and its scientific research importance to the location. And, it shows
greatly difference on vegetation growth and recovery according to regionality and land condition.
The study area is necessary to protect the vegetation from conservation of the land resource because it is a
region with severe environmental condition climatically and topographically, though primary forest of the
beech with the high naturalness is an abounding region.
This purpose of this study shows natural environment spatially and analyzes the relevance from the transition
of geography condition and vegetation to analyze present state of the vegetation. This study has two approach
for analysis. One is the use of geography information data made from the aerial photograph in order to show
the geography characteristics in the study area. The other is to spatially analyze and examine the vegetation
transition using the existing vegetation maps of 1975 and 1985, with vegetation distribution and the diversity
of vegetation. In a series of examination, it clarifies the relationship of primary information on the relevance
between geography characteristics and vegetation distribution such as a slope and azimuth. On the basis of
these it analyzed the spatial information to express various natural environment on.
Analysis Method:
The low artificial vegetationGeographic information data used in this analysis are soil
map, geological map, topographical map, vegetation map, and aerial photography. It applied the statistical
analysis by overlay technique, that classifies the relevance to the natural condition using
ARC/INFO(Ver.8.0.1) developed in U.S.A. ESRI Co. in order to digitize all geographic information data in
the analysis.
fig. 3 Soil Map
fig. 4 Geological Map
Soil map(Fig. 3) and geological map(Fig.4) utilized 1/200000 map of the Economic Planning Agency in 1974. The topographical map utilized 1/25000 map of Geographical Survey Inst., and the DEM made by
using digitizer and TIN of ARC/INFO. The geomorphic area converted DEM into the UTM coordinate,
and it made and computed slope figure (fig. 5), and azimuth figure (fig. 6) from the DEM. The vegetation
map digitized existing vegetation map of 1/200000 of the first National Survey on the Natural Environment
(1975, fig. 7) and 1/50000 of the third National Survey on the Natural Environment (1985, fig. 8) of the
Environment Agency.
As the characteristics of the study area, the geography fluctuation is a frequent place of landslide and
avalanche. Therefore, it digitized the delicate landscape evolution (landslide and slope failure) which could
not be shown by topographical map, after it showed the information in topographical map using aerial
photograph (1977)(Fig. 9). It showed spatially biological diversity of the natural environment on the basis of
the analytical result.
fig. 5 Slope
Fig.6 Azimuth
Fig. 7 Vegetation Map (1975)
Fig. 8 Vegetation Map (1985)
Fig. 9 Landslide Area
Fig. 10 Grade of Vegetation Naturalness (1975)
