Ji'an in context: Street-network sprawl trends

Ji'an in context

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
Ji'anJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ji'an plotted against Jilin and China. While Jilin and China both followed a zig-zag trend with an overall increase, Ji'an's new street additions followed a zig-zag trend with an overall increase. Most recently, Ji'an's incremental SNDi rose from 4.77 to 10.68 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ji'an ranked 46th out of 47 cities in Jilin and 1669th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
10.68
Rank in China
1830th of 1843
Rank in Jilin
46th of 47

Entire Network (Aggregate)

SNDi value
4.58
Rank in China
1669th of 1843
Rank in Jilin
46th of 47

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

What about similarly populated cities?

0369<19751976–19901991–20052006–2020SNDi of street additions
0369<19751976–19901991–20052006–2020SNDi of entire street network
Ji'anMichikaSiltara

In new street additions, Ji'an fluctuated in its street-construction patterns, while Michika built increasingly disconnected streets over time and Siltara built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Ji'an and Michika both became progressively more disconnected, while Siltara grew more disconnected from 1975 through 1991-2005, then improved. Notably, Ji'an had a more sprawly network than Siltara in 1975 but the two have since reversed their relative ranking.