Xiyang in context: Street-network sprawl trends
Xiyang in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xiyang plotted against Shanxi and China. The SNDi of new construction in Xiyang peaked in 1976-1990, compared to Shanxi which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Xiyang's incremental SNDi fell from 2.05 to 1.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xiyang ranked 4th out of 80 cities in Shanxi and 168th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.86
- Rank in China
- 184th of 1843
- Rank in Shanxi
- 8th of 80
Entire Network (Aggregate)
- SNDi value
- 1.89
- Rank in China
- 168th of 1843
- Rank in Shanxi
- 4th of 80
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Sidi Salim, Egypt
- Nabadwip, India
- Diffa, Niger
- Crato, Brazil
- Piacenza, Italy
- Akkaraipattu, Sri Lanka
In new street additions, Xiyang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Sidi Salim built increasingly disconnected streets over time and Crato fluctuated in its street-construction patterns. Looking at the full network, Sidi Salim and Crato both became progressively more disconnected, while Xiyang grew more disconnected from 1975 through 1991-2005, then improved. Notably, Xiyang had a more sprawly network than Sidi Salim in 1975 but the two have since reversed their relative ranking.