Sixian in context: Street-network sprawl trends
Sixian in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sixian plotted against Anhui and China. The SNDi of new construction in Sixian followed a zig-zag trend with an overall decrease, 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, Sixian's incremental SNDi fell from 2.52 to 1.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sixian ranked 10th out of 74 cities in Anhui and 143rd out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.37
- Rank in China
- 49th of 1843
- Rank in Anhui
- 4th of 74
Entire Network (Aggregate)
- SNDi value
- 1.84
- Rank in China
- 143rd of 1843
- Rank in Anhui
- 10th 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, Sixian fluctuated in its street-construction patterns, while Fotang fluctuated in its street-construction patterns and Gucheng built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Sixian fluctuated in connectivity, while Fotang fluctuated in connectivity and Gucheng became progressively more disconnected. Notably, Sixian had a more sprawly network than Fotang in 1975 but the two have since reversed their relative ranking.