Table 2. Researches of quantitative park service inequity in Korea

Researcher	Year	SES variables	Target area	Method	Result
Ryu et al.	2002	Population density	Daegu	Designate as insufficient area when park area is less than 2m2 per capita	Areas with high population density have low park green area and many low-income residents.
Jung and Lee	2008	Population, park area	Changwon	Analyze urban green imbalance using Lorentz curve and Gini coefficient	Gini coefficient for urban green parks for population is 0.4 or higher, and its imbalance is serious.
Lim et al.	2009	Children ratio, low-income ratio, car ownership, dilapidated house ratio	Seongnam	GIS buffer analysis using park service area	The lower SES the community has, the poorer access to urban parks is.
Lee and Lee	2010	Park area per capita	Busan	Evaluation of planned and actual park supply by Huff model	Some cases suffered from shortage of park supply. Prioritizing for park planning is required.
Seo and Jun	2011	Population density, women ratio, under-age ratio, basic-living recipient ratio, free housing ratio, elderly ratio	Daegu	T-test between SES and living service area in and out of park service area	Indicators for environmental inequity in Daegu are elderly ratio, basic living recipients ratio, and free housing ratio.
Bae and Kim	2013	Land price, estimated earning, park area per capita	Cheongju	Comparison of park service area by non-hierarchical cluster analysis	Park service areas have higher income levels and higher land prices compared to other areas.
Moon and Ban	2015	Population, estimated earning, land price	Cheongju	Comparison of SES in and out of park service area	Population within park service area is larger than population outsie of service areas.