fi
en
1
5
10
20
40
60
80
100
Urban
1
urban
3
urban air pollution
1
urban air quality
1
urban areas
1
Urban biodiversity
2
urban centers
1
urban development
1
urban ecology
1
urban ecosystem
1
urban environment
2
urban gardens
4
urban green infrastructure
3
urban population
4
urban sociology
1
urban spaces
1
Urban, Topography, Orography
1
urbanism
1