Changde in context: Street-network sprawl trends

Changde in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
ChangdeHunan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changde plotted against Hunan and China. The SNDi of new construction in Changde peaked in 1976-1990, compared to Hunan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Changde's incremental SNDi fell from 2.68 to 2.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changde ranked 37th out of 89 cities in Hunan and 759th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.39
Rank in China
451st of 1843
Rank in Hunan
31st of 89

Entire Network (Aggregate)

SNDi value
2.7
Rank in China
759th of 1843
Rank in Hunan
37th of 89

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

What about similarly populated cities?

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
ChangdeKrakowBenxi

In new street additions, Changde built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Krakow built increasingly disconnected streets over time and Benxi fluctuated in its street-construction patterns. Looking at the full network, Krakow and Benxi both became progressively more disconnected, while Changde grew more disconnected from 1975 through 1991-2005, then improved. Changde and Krakow have been converging in their street-network character since 1975.