Tianjia‘an in context: Street-network sprawl trends
Tianjia'an in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tianjia‘an plotted against Anhui and China. The SNDi of new construction in Tianjia‘an was at its lowest in 1976-1990, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Tianjia‘an's incremental SNDi rose from 4.55 to 5.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tianjia‘an ranked 70th out of 74 cities in Anhui and 1696th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 5.04
- Rank in China
- 1639th of 1843
- Rank in Anhui
- 68th of 74
Entire Network (Aggregate)
- SNDi value
- 4.78
- Rank in China
- 1696th of 1843
- Rank in Anhui
- 70th of 74
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Tianjia‘an built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Aboh built increasingly disconnected streets over time and Tainan fluctuated in its street-construction patterns. Looking at the full network, Aboh and Tainan both became progressively more disconnected, while Tianjia‘an became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards.