Nature-Based Restoration Simulation for Disaster-Prone Coastal Area Using Green Infrastructure Effect

Kihwan Song; Youngsun Seok; Jinhyung Chon

doi:10.3390/ijerph20043096

Nature-Based Restoration Simulation for Disaster-Prone Coastal Area Using Green Infrastructure Effect

Int J Environ Res Public Health. 2023 Feb 10;20(4):3096. doi: 10.3390/ijerph20043096.

Authors

Kihwan Song¹, Youngsun Seok², Jinhyung Chon³

Affiliations

¹ OJEong Resilience Institute, Korea University, Seoul 02841, Republic of Korea.
² Department of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
³ Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.

Abstract

Floods in coastal areas are caused by a range of complex factors such as typhoons and heavy rainfall, and this issue has become increasingly serious as interference has occurred in the social-ecological system in recent years. Given the structural limitations and high maintenance costs of the existing gray infrastructure, the need for a nature-based restoration plan utilizing green infrastructure has been raised. The purpose of this study is to simulate the restoration process through the quantification of green infrastructure effects along with resilience in disaster-prone coastal areas, and to present it as nature-based restoration planning. For this purpose, first, a disaster-prone area was derived from Haeundae-gu, Busan, Republic of Korea, which was affected by typhoons. In order to simulate the runoff from typhoon "Chaba" in the target area and the effects of reducing the runoff of green infrastructure, relevant data was collected and a model constructed. Finally, the effects of the green infrastructure as applied to the disaster-prone area were quantified by means of resilience and a nature-based restoration plan was presented. As a result of this study, first, the runoff reduction effect was greatest when the maximum biotope area ratio of 30% was applied to the artificial ground. In the case of the green roof, the effect was the greatest 6 h following the typhoon passing through, and the effects of the infiltration storage facility was greater 9 h following the same. Porous pavement exhibited the lowest runoff reduction effect. In terms of resilience, it was found that the system was restored to its original state after the biotope area ratio of 20% was applied. This study is significant in that it analyzes the effects of green infrastructure based upon the concept of resilience and connects them to nature-based restoration planning. Based on this, it will be provided as an important tool for planning policy management to effectively respond to future coastal disasters.

Keywords: coastal resilience; nature-based solutions; restoration planning; simulation modelling.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cyclonic Storms*
Disasters*
Ecosystem
Floods
Republic of Korea

Grants and funding

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2021R1A6A3A01087973). This research was also supported by “Development of living shoreline technology based on blue carbon science toward climate change adaptation” of Korea Institute of Marine Science & Technology Promotion (KIMST), funded by the Ministry of Oceans and Fisheries (KIMST-20220526).