Dengbu in context: Street-network sprawl trends

Dengbu in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dengbu plotted against Jiangxi and China. The SNDi of new construction in Dengbu rose steadily, compared to Jiangxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Dengbu's incremental SNDi rose from 2.04 to 2.94 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dengbu ranked 15th out of 82 cities in Jiangxi and 337th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.94
Rank in China
838th of 1843
Rank in Jiangxi
47th of 82

Entire Network (Aggregate)

SNDi value
2.18
Rank in China
337th of 1843
Rank in Jiangxi
15th of 82

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
DengbuSiqianJize

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