인과순환구조 분석을 활용한 지속가능한 수변도시의 그린 인프라 도입 및 식재기반 계획 : 부산 에코델타시티를 중심으로

Abstract

Busan Eco-Delta city is being developed under the paradigm of eco-friendly waterfront cities with goals such as sustainable development, ecosystem service improvement, and climate change response, etc. To do this, it is necessary to analyze the key variables that appear in common in recognition of the planting base environment and introduction of green infrastructure and to analyze the integrated system. Therefore, the purpose of this study is to analyze the causal loop structure to construct planting base and introduce green infrastructure in realizing a sustainable waterfront city. First, the causal loop structure of the planting base environment according to tidal-flat soil, mountain soil, and dredged sediment was analyzed using system thinking in system dynamics methodology. As a result of integrating individual causal loop structures, key variables of the planting base environment were soil hardness, organic matter in soil, soil pH, soil salinity, and plants growth variables. Second, when introducing green infrastructure (urban forests, wetlands, grasslands) to the planting base, constraints were derived and presented as a causal loop structure. In urban forests, the values of soil hardness, slope, soil pH, soil salinity, soil drainage, and plant growth should be taken into consideration. In wetlands, variables of soil hardness, soil permeability, soil moisture, wetland water level fluctuation, and wetland water depth should be taken into consideration. In grasslands, consideration of the variables of soil hardness, soil drainage and permeability, soil pH, and plant growth needed. The green infrastructure introduced in this study is important in that it can respond to climate change as well as environmental pollution. It is expected that the results of this study can be used as the basis for a green infrastructure plan in the process of developing Busan Eco-Delta city.