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Land Use/Land Cover
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An agricultural Land Use analysis by the spatial integration data map
Analysis Area
The analysis area is one city in Nara prefecture. This city is near by big consumption area as Osaka and
Nara city, being organized 17 agricultural communities, and the agriculture is important section here. Fig.1
express the change of agriculture management area from agriculture census data in every agricultural
community, every five years. In every community, different trends are there, but it is clear that the
degreasing in recent years is remarkable.
Fig 1. Change of farm management area
Analysis of land classification
- Data Structure
Fig.2 explain the structure of analysis data map, which we built in this study. The survey maps are vector
data and made based on acreage investigation and agricultural structure improvement project, but all city
areas don’t include in it. Because there are gaps between survey maps and Ikonos satellite image, we
correct the latter based on survey maps in the view of accuracy. Fig.3 show the analysis area extracted
from corrected Ikonos satellite image.
The attribute data of farmland register include not only square but also much information like as land
category and owner.
Fig 2. Stucture of data map
Fig 3. Ikonos Image of object area
- Classify for the whole Area
We classified Ikonos satellite image of whole city by supervised classification . Fig.4 show one result of
classifies. By using this image, we can get topographic information, but farmland was included in forest
category, so evaluated more narrow. We can’t get about land category.
Fig 4. Result of supervised classfication
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