Qianshan in context: Street-network sprawl trends
Qianshan in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qianshan plotted against Anhui and China. The SNDi of new construction in Qianshan peaked in 1991-2005, 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, Qianshan's incremental SNDi fell from 1.82 to 1.5 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qianshan ranked 7th out of 74 cities in Anhui and 52nd out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.5
- Rank in China
- 64th of 1843
- Rank in Anhui
- 6th of 74
Entire Network (Aggregate)
- SNDi value
- 1.54
- Rank in China
- 52nd of 1843
- Rank in Anhui
- 7th of 74
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Unjha, India
- Valenciennes, France
- Rath, India
- Chaguanas, Trinidad and Tobago
- Pangandaran, Indonesia
- Rafsanjan, Iran
In new street additions, Qianshan and Chaguanas both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Unjha fluctuated in its street-construction patterns. Looking at the full network, Unjha and Chaguanas both became progressively more disconnected, while Qianshan grew more disconnected from 1975 through 1991-2005, then improved.