신도시의 물순환 건전화를 위한 그린인프라 조성 기준에 대한 연구

Abstract

Abstract Criteria for Construction of Green Infrastructure to Upgrade Water Management in New Cities “Green infrastructure” refers to an interconnected network of green space that is planned and managed for its inherent value as a natural resource, as well as for the associated benefits it provides to the population. Green infrastructure networks provide many ecological benefits including ones that residents may take for granted, or even be unaware of. In this study, we focused on the water management functions provided by green infrastructure, including its critical function as a massive water filter and natural reservoir. In Korea, both residents and the government have treated green infrastructure as a site for leisure activities and recreation, and as a location for items of scenic value, as is evident in laws governing parks, greenbelts, and landscaping. The role of green infrastructure in water management, and particularly in water circulation, however, has often been overlooked. To this end, this study divided “green Infrastructure” into two categories. The first category is green infrastructure whose planning should precede what is traditionally thought of as “infrastructure” (i.e. the “gray infrastructure” of roads, buildings, and sewers). For this kind of green infrastructure, we proposed several criteria including DEM, soil type, land use, streams and stream buffer, topology, and water flow direction and accumulation. The other category of green infrastructure is green infrastructure devised after planning or constructing of other infrastructure (i.e. “gray infrastructure”). This kind of green infrastructure is aimed to reduce the detrimental effects of gray infrastructure, particularly with regard to its generally water impermeable surfaces, on water managementin the area in respect of to water filtration and storage. We also proposed several criteria in planning and constructing this latter variety of green infrastructure. We also noted that in addition to its effects on the water supply, green infrastructure can also positively affect climate change in the immediate area by reducing the effect of urban heat islands.