Putian in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Putian plotted against Fujian and China. The SNDi of new construction in Putian peaked in 1976-1990, compared to Fujian which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Putian's incremental SNDi fell from 6.53 to 6.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Putian ranked 70th out of 75 cities in Fujian and 1801st out of 1843 in China as of 2020.

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

• Zibo, China
• Hamburg, Germany
• Basra, Iraq
• Campinas, Brazil
• Niterói, Brazil
• Portland, United States

In new street additions, Putian and Zibo both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Campinas built increasingly disconnected streets over time. For the full network, Putian grew more disconnected from 1975 through 1991-2005, then improved, while Zibo grew more disconnected from 1975 through 1976-1990, then improved and Campinas became progressively more disconnected. Putian and Zibo have been growing further apart in their street-network character since 1975.