Changle 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 Changle plotted against Fujian and China. The SNDi of new construction in Changle was at its lowest in 1991-2005, compared to Fujian which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Changle's incremental SNDi rose from 3.48 to 4.41 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changle ranked 60th out of 75 cities in Fujian as of 2020.

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

What about similarly populated cities?

• Medininagar, India
• Lashio, Myanmar
• Renqiu, China
• Madadeni, South Africa
• Linqing, China
• Kigoma, Tanzania

While Medininagar and Madadeni both built increasingly disconnected streets over time, Changle built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. Looking at the full network, Medininagar and Madadeni both became progressively more disconnected, while Changle became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Changle and Medininagar have been converging in their street-network character since 1975.