Applied ecology 11 City and town planning: architectural aspects 8 Sustainable urban development 8 Urban growth 8 Environmentally-friendly ('green') architecture and design 7 Research & information: general 6 urban development 6 Sustainable development 5 City & town planning - architectural aspects 4 Environmentally-friendly architecture & design 4 Technology: general issues 4 China 3 sustainability 3 Artificial intelligence 2 Ecological science, the Biosphere 2 Ecology 2 Economic and social effects 2 Gross Domestic Product 2 History of engineering & technology 2 History of engineering and technology 2 Human geography 2 Landscape art & architecture 2 Remote sensing 2 Urban & municipal planning 2 Urbanization 2 Water supply 2 greenspace 2 spatiotemporal analysis 2 sustainable urban development 2 urban area 2