Nanchuan in context: Street-network sprawl trends
Nanchuan in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nanchuan plotted against Chongqing and China. The SNDi of new construction in Nanchuan peaked in 1991-2005, compared to Chongqing which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Nanchuan's incremental SNDi fell from 3.61 to 2.59 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nanchuan ranked 13th out of 47 cities in Chongqing and 845th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 2.59
- Rank in China
- 576th of 1843
- Rank in Chongqing
- 10th of 47
Entire Network (Aggregate)
- SNDi value
- 2.79
- Rank in China
- 845th of 1843
- Rank in Chongqing
- 13th of 47
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Nanchuan built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Pinghu built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Acheng fluctuated in its street-construction patterns. For the full network, Nanchuan grew more disconnected from 1975 through 1991-2005, then improved, while Pinghu became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Acheng became progressively more disconnected. Nanchuan and Acheng have been growing further apart in their street-network character since 1975.