Although there are a lot of guidelines for sustainable land use, the key factor determining the land use is the legal regulations. Furthermore, people always want to ensure the ecological quality and the sustainability through legal regulations. Therefore, it is necessary to explore how legal regulations influence the ecological habitats through controlling land use.
In Taiwan, there are three land use systems: urban (which is in the scope of the urban plan), non-urban, and national park (which is in the scope of the national park plan). This study carries out a series of gradient analysis in several regions to examine the difference between land use systems. In order to measure the urbanization gradient of land cover types, we conduct the analysis along a wild-urban transect cutting across the regions we select. The areas of artificial pavement and buildings are computed using an overlapping moving window across the transect with FRAGSTATS.
The main findings of the analysis include two dimensions of legal regulations: the legal system and the degree of wild conservation. First, the buffer zone does not exist, unless there are non-urban lands between the urban and the wild. Second, the national park provides the best protection for the wild. There is a protected zone in urban plan, but it does not maintain a good quality as other legal systems. The results could be applied to suggest the principles of land use legislation.