Zhenlai in context: Street-network sprawl trends

Zhenlai in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
ZhenlaiJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zhenlai plotted against Jilin and China. The SNDi of new construction in Zhenlai was at its lowest in 1991-2005, compared to Jilin which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Zhenlai's incremental SNDi rose from 1.27 to 1.75 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zhenlai ranked 7th out of 47 cities in Jilin and 124th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.75
Rank in China
141st of 1843
Rank in Jilin
9th of 47

Entire Network (Aggregate)

SNDi value
1.79
Rank in China
124th of 1843
Rank in Jilin
7th of 47

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

What about similarly populated cities?

11.52<19751976–19901991–20052006–2020SNDi of street additions
11.52<19751976–19901991–20052006–2020SNDi of entire street network
ZhenlaiAromaHusn

In new street additions, Zhenlai built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Aroma built increasingly disconnected streets over time and Husn fluctuated in its street-construction patterns. Looking at the full network, Aroma and Husn both became progressively more disconnected, while Zhenlai became progressively more connected. Notably, Zhenlai had a more sprawly network than Husn in 1975 but the two have since reversed their relative ranking.