Pucheng in context: Street-network sprawl trends

Pucheng in context

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
PuchengShaanxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pucheng plotted against Shaanxi and China. The SNDi of new construction in Pucheng 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, Pucheng's incremental SNDi fell from 3.9 to 2.32 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pucheng ranked 38th out of 62 cities in Shaanxi and 1047th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.32
Rank in China
409th of 1843
Rank in Shaanxi
11th of 62

Entire Network (Aggregate)

SNDi value
3.02
Rank in China
1047th of 1843
Rank in Shaanxi
38th of 62

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

What about similarly populated cities?

0.91.82.73.6<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.6<19751976–19901991–20052006–2020SNDi of entire street network
PuchengKasugula BamaAhar

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