Dejiang in context: Street-network sprawl trends

Dejiang in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
DejiangGuizhou (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dejiang plotted against Guizhou and China. The SNDi of new construction in Dejiang followed a zig-zag trend with an overall decrease, compared to Guizhou which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Dejiang's incremental SNDi fell from 2.93 to 1.98 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dejiang ranked 11th out of 41 cities in Guizhou and 450th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.98
Rank in China
235th of 1843
Rank in Guizhou
5th of 41

Entire Network (Aggregate)

SNDi value
2.32
Rank in China
450th of 1843
Rank in Guizhou
11th of 41

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
DejiangHoornOkara Cantonment

In new street additions, Dejiang and Okara Cantonment both fluctuated in its street-construction patterns, while Hoorn built increasingly disconnected streets over time. For the full network, Dejiang became progressively more connected, while Hoorn became progressively more disconnected and Okara Cantonment became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Dejiang had a more sprawly network than Okara Cantonment in 1975 but the two have since reversed their relative ranking.