Jia in context: Street-network sprawl trends
Jia in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jia plotted against Henan and China. While Henan and China both followed a zig-zag trend with an overall increase, Jia's new street additions followed a zig-zag trend with an overall increase. Most recently, Jia's incremental SNDi rose from 1.23 to 1.51 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jia ranked 6th out of 129 cities in Henan and 29th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.51
- Rank in China
- 68th of 1843
- Rank in Henan
- 5th of 129
Entire Network (Aggregate)
- SNDi value
- 1.39
- Rank in China
- 29th of 1843
- Rank in Henan
- 6th of 129
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Jia fluctuated in its street-construction patterns, while Tacheng built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Dalkola built increasingly disconnected streets over time. For the full network, Jia fluctuated in connectivity, while Tacheng became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Dalkola became progressively more disconnected. Jia and Tacheng have been converging in their street-network character since 1975.