Hanmin Choi, Kyung Hee University, Environmental Science and Environmental Engineering, Yongin, South Korea, YouJin Kim, Kyung Hee University, Environmental Science and Environmental Engineering, Yongin, Korea, Republic of (South), Sin Yee Yoo, National Institute of Forest Science, Urban forest study center, Seoul, South Korea and Gayoung Yoo, Kyung Hee University, Department of Environmental Science and Engineering, Yongin, South Korea