Dali in context: Street-network sprawl trends

Dali 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
DaliShaanxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dali plotted against Shaanxi and China. The SNDi of new construction in Dali peaked in 1991-2005, compared to Shaanxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Dali's incremental SNDi fell from 3.06 to 2.13 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dali ranked 29th out of 62 cities in Shaanxi as of 2020.

New Street Additions (2006–2020)

SNDi value
2.13
Rank in Shaanxi
8th of 62

Entire Network (Aggregate)

SNDi value
2.76
Rank in Shaanxi
29th of 62

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

What about similarly populated cities?

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
DaliBoreOktjabrski

While Bore and Oktjabrski both built increasingly disconnected streets over time, Dali built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. Looking at the full network, Bore and Oktjabrski both became progressively more disconnected, while Dali grew more disconnected from 1975 through 1991-2005, then improved. Notably, Dali had a more sprawly network than Bore in 1975 but the two have since reversed their relative ranking.