Tongren in context: Street-network sprawl trends
Tongren in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tongren plotted against Guizhou and China. The SNDi of new construction in Tongren rose steadily, compared to Guizhou which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Tongren's incremental SNDi rose from 3.18 to 5.38 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tongren ranked 23rd out of 41 cities in Guizhou and 1326th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 5.38
- Rank in China
- 1690th of 1843
- Rank in Guizhou
- 37th of 41
Entire Network (Aggregate)
- SNDi value
- 3.43
- Rank in China
- 1326th of 1843
- Rank in Guizhou
- 23rd of 41
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Tongren and Akbarpur both built increasingly disconnected streets over time, while Fengshun fluctuated in its street-construction patterns. For the full network, Tongren and Akbarpur both became progressively more disconnected, while Fengshun fluctuated in connectivity. Tongren and Akbarpur have been growing further apart in their street-network character since 1975.