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) |