An analysis of land-use transition based on watershed units using the national digital information data base
2002
Ohbi, K. (Tsukuba Univ., Ibaraki (Japan)) | Suzuki, M.
The purpose of this paper is to clarify the structure of land-use transition based on watershed units. The database compiled by Ministry of Land, Infrastructure and Transport of Japan, which is a 100 meter grid cell data of the land-use in 1976, 1991, was used to examine the land-use transition of Naka-gawa river basin. The results are as follows: 1) Naka-gawa river basin containing 8 main watersheds can be subdivided into 393 watershed units. 2) Land-use transition on based watershed units in 1976, 1991 analyzed using GIS overlay analysis. 3) Characteristics of land-use transition became clear using Principal Component Analysis. 4) Watershed units can be classified into 7 types using Cluster Analysis with principal component score. 5) There exists the relationship between the land-use and regional environmental elements such as land-form and soils. 6) We could represent Land-use transition on watershed units in a simple diagram.
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