This study aims at suggesting the attributes and limitations of each methods through the evaluation of the verified analysis results, so that it will be possible to select an efficient method that may be applied to assess the green coverage ratio. Green coverage areas of each sites subject to this study were assessed utilizing the following four methods. First, assessment of green coverage area through direct planimetry of satellite images. Second, assessment of green coverage area using land cover map. Third, assessment of green coverage area utilizing the band value in satellite images. Forth, assessment of green coverage area using and land cover map and reference materials. For this study, four urban zones of the City of Seosan in Chungcheongnam-do. As a result, this study show that the best calculation method is the one that combines the merits of first and second methods. This method is expected to be suitable for application in research sites of middle size and above. It is also deemed that it will be possible to apply this method in researches of wide area, such as setting up master plans for parks and green zones established by each local self-government organizations.

This study aims to examine the existing law-protected trees in the city of Daejeon and find out the way of creating urban small parks by utilizing them. To do this, this study reviewed previous research papers and scholastic writings, and surveyed present conditions and usage patterns of the 135 law-protected trees in the city of Daejeon.The result shows that the sites of 114 law-protected trees are possible to create as urban small parks and the sites of 42 trees, among them, have proper location and condition through the result of an evaluating sheet. To create urban small parks using the law-protected tree, considerations are as follows. First, the age, the origin, the tale, the cultural heritage, and so on should be carefully investigated through the scholastic research and survey. Second, systematical management system should be organized to maintain ecological sustainability. Third, each protected tree belongs to the community and the consciousness of citizens should be elevated to have a strong affection to them by educating and informing as a cultural heritage and a community symbol.