Green Infrastructure (GI) approach provides significant benefits to cities and communities. GI applications would provide multi-benefits
such as the reduction in building energy demand, stormwater management, urban heat island reduction, habitat creation, etc. GI is
nowadays considered as a multi-benefit best management practice (BMP) at diverse levels of government. The purpose of this study is
to find out the positive effects of GI application, and Geographic Information System (GIS) is used for the accurate and efficient analysis.
Two polygon data, ‘GreenRoof’ and ‘ParkingPlace’ are produced with a satellite imagery extracted from Google Earth Pro. These data
are used to calculate total available spaces for green roof and permeable pavement in the campus of Chungbuk National University. After
GI application in the campus, 13.2% of landcover is converted to green spaces and this change results in expanding the green network
of Cheongju city. The result of this study shows that green roof application can absorb 4576.95 kg/yr of Carbon Dioxide and possibly
reduce maximum 1,497,600L urban runoff. This study proves how GI is valuable for the city environment with quantitative analyses.

• Jaehyuck Choi(Department of Forest Science, Chungbuk National University, Cheongju 28644, South Korea)
• Bong Ju Park(Department of Horticultural Science, Chungbuk National University, Cheongju 28644, South Korea) Corresponding author