Changting in context: Street-network sprawl trends

Changting in context

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
ChangtingFujian (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changting plotted against Fujian and China. The SNDi of new construction in Changting 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, Changting's incremental SNDi rose from 2.47 to 3.16 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changting ranked 22nd out of 75 cities in Fujian and 747th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.16
Rank in China
976th of 1843
Rank in Fujian
27th of 75

Entire Network (Aggregate)

SNDi value
2.69
Rank in China
747th of 1843
Rank in Fujian
22nd of 75

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ChangtingXuanhanSoubre

In new street additions, Changting built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Xuanhan fluctuated in its street-construction patterns and Soubré built increasingly disconnected streets over time. For the full network, Changting became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Xuanhan fluctuated in connectivity and Soubré became progressively more disconnected. Notably, Changting had a more sprawly network than Soubré in 1975 but the two have since reversed their relative ranking.