“…According to the standard of park green space area of 6 m2 per capita, according to the park area of 2.5, 10 hm2 and 20hm2, the population of each plot should be counted separately, as shown in Table 1. The plots with population of 3,333 ~ 8,333, 8,333 ~ 16,667, 16,667 ~ 33,333 and > 3,333 were selected as the plots to be optimized to increase the green area by 2, 5, 10 hm 2 and 20 hm 2 .…”