In changes of social environment, change of the use of land due to the change of residence type, industry and urban structure is an influential factor to safety vulnerable social group. From PTSD from disaster experience point of view, experience of disaster, damage from disaster, witness of disaster make people experience anxiety and confusion, increase the anxiety toward disaster and lead to difficulty in daily lives. As for the result of analyzing anxiety factors regarding disaster damage potential composed of 20 items of safety manager, damage potential of sink hole which recently rapidly increased was the highest, and followed by anxiety from safety damage potential of family, anxiety from phone call damage. Likewise, if the anxiety toward disaster damage potential is digitized, it contributes to setting safety management planning for disaster prevention as it visualizes the risk.

The objective of the study is to establish principles of space planning required to create community gardens for improving self-support capability of vulnerable groups. The characteristics of community garden users and the purposes of community gardens were considered when setting these principles. The target users are vulnerable groups. In considering the circumstance of the homeless who have difficulties in overcoming physical, mental, social and financial risks, 13 universal design principles were applied: Equitable use, flexibility in use, simple and intuitive use, perceptible information, tolerance for error, low physical effort, size and space for approach and use, self-supporting, aesthetics, economic feasibility, environment friendly, healthiness, and sustainability. As the space planning principles based on the community garden purposes are set to achieve mental, social and financial self-support, healing garden and urban agriculture were combined in the principles. Maximally efficient division of space where various programs are available, privacy-protected space, rest areas for strengthening resilience and health, pleasant and beautiful spaces with plants, easily accessible and safe space, and easy maintenance and sustainability are required factors for community gardens. As the ultimate goal, financial self-support, a space where they can develop acquired skills and then proceed with productive activities was included in the space planning principles. Additionally, ecological aspects such as cycle of materials, efficient energy use and expanded biodiversity were combined and supported by local communities to secure sustainability of the use of space.

The exposed population of a vulnerable group to high ozone episodes (exceeding 60 ppb/8h) was estimated in Busan metropolitan city from 2000 to 2010. The frequency of high ozone days at monitoring sites and the number of the population aged over 65 were used to calculate the accumulated (total, seasonal, and yearly) number of the exposed older population (EOP) to high ozone episodes during the study period based on administrative areas, by interpolation and zonal mean methods in ArcGIS software. The older population in this city had increased significantly from 2000 to 2010 (representing over 10% of the total population in 2010). The vulnerable areas (e.g. the eastern area of the city) of the EOP to high ozone episodes were different from the areas with frequent high ozone episodes (e.g., the western area) due to the increase of the older population in particular areas. The difference was more significant in spring than in any other season, and in 2010 than in previous years (2000 and 2005).