Table 1. Ecological evaluation table by site of purchased land

Evaluation items Criteria Reference literature
Point and non-point pollutions High: none / Middle: 1to2 / Low: three or more Park(2014)
Vegetation diversity High: more than 60 species/ha / Middle: 31-69 species/ha / Low: less than 30 species/ha Ra et al. (2001), Adamus and Clough (1978), Freeman (1999)
Landscape diversity High: more than 5 patches / Middle: 3-5 patches / Low: less than 3 patches DDI (2013)
Exotic plants High: No invasive alien species and dangerous plants / Middle: 1-2 species of invasive alien species or advantages of dangerous plants and vines / Low: 3 or more species of invasive alien species or advantages of dangerous plants and vines Kang (2008), SMG (2005), SDI (2010)
View on waterside and road High: complete opening / Middle: a little opening / Low: closed Landscape guideline of urban regeneration project of Korea
Connectivity High: less than 150m / Middle: 150m-1km / Low: more than 1km Tilton et al. (2001)
Possibilities of wildlife habitats High: 3 or more forest and wetland / Middle: 1 to 2 forest and wetland / Low: no forest and wetland Kim (2012)