Recently, urban park green areas have been approached as a “green infrastructure” concept that includes natural ecological elements and artificially created green spaces of the city, and allows the multifunction of green areas to be expressed through their network formation. Green infrastructure mainly refers to green space in the city, but in a wide range, it may include facilities involved in the water circulation system. Green infrastructure is one of the main bases for determining urban space structure and is important in various fields such as climate change response, disaster reduction, environment, health, and energy. In large cities such as Seoul, there is a limit to securing land for green infrastructure due to overcrowded land use, so artificial structure-based green infrastructure such as building greening such as rooftop greening and wall greening, and green space in the city can play a major role in expanding green infrastructure. The multifunctionality of the green infrastructure can be strengthened through a network between these green infrastructures.

In this study, for the three-dimensional management of green spaces with various functions, the concept and type of green infrastructure were summarized in consideration of the characteristics of Seoul. In addition, by establishing a green infrastructure information system, it was intended to propose a direction for green infrastructure management from an urban planning perspective.

The main contents of this study are divided into green infrastructure policy trend analysis and concept definition, green infrastructure type setting, green infrastructure information system construction, green infrastructure characteristic analysis, and urban planning utilization. First, in the analysis and conceptual definition of green infrastructure policy trends, media articles related to green infrastructure were reviewed to identify recent issues, and related domestic and foreign policy trends were comprehensively analyzed. In addition, previous studies related to green infrastructure were analyzed to redefine the concept of green infrastructure from an urban planning perspective considering the characteristics of Seoul, and the structure and multifunctionality of green infrastructure in cities were comprehensively reviewed.

Second, the types of green infrastructure including various types of green spaces that can be applied within the city as well as park green areas were organized in consideration of the urban characteristics of Seoul by comprehensively reflecting previous studies and expert survey opinions. As a result of this study, the type of green infrastructure in Seoul can be largely divided into natural space, created green space, and structure-based green space. The natural space includes five detailed types, the created green space is classified into six detailed types, and the structure-based green space is classified into five detailed types.

Third, in the construction of the green infrastructure information system, the GIS DB construction method was reviewed for each green infrastructure type, and data for each green infrastructure type was constructed by dividing the entire city into 50x50(m) grids. When constructing the DB, it was designed to be able to connect with UPIS in consideration of utilization aspects.

Fourth, in the Seoul Green Infrastructure Characteristic Analysis, the spatial distribution and regional characteristics of each green infrastructure type were comprehensively analyzed using the Seoul Green Infrastructure GIS DB, and the type and total amount of green infrastructure were calculated by spatial hierarchy.

Fifth, in the urban planning utilization plan, the direction of green infrastructure network planning was proposed based on the urban planning utilization plan for the total amount management of green infrastructure in Seoul and the established DB. In addition, improvement and utilization measures for upgrading the Green Infrastructure DB in the future were also presented.