A sensitivity analysis of raster-based land use change model in multi spatial scales
Date Issued
2008
Date
2008
Author(s)
Li, Ming-Ju
Abstract
There are many kinds of factors to impact on the land use pattern, because of it’s complicating interactive process, in recent years, many researchers expected to explain the process of environmental dynamic changes by finding the driving forces of land use or land cover change. In many land use change studies or simulations, most of researchers will convert vector data to raster data format, using the regular grid to be a basic unit for analyzing and simulating. At this time, grid is a basic unit to represent spatial information, it means when we chose the basic grid size, we also set the spatial resolution of the research. This study detects driving forces of land use change at different spatial resolution and extent. The outcomes show that when the basic grid size was too large, it will lead to detect wrong driving forces. At different sub-areas, driving forces have little differences. The result shows that before doing land use/cover change research, we should evaluate which grid size is suitable for the research area, research area should be divided to many sub-region when it’s geographical or social economical features are quite different.
Subjects
land use change
scale
statistics analysis
geography information system
SDGs
Type
thesis
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