Gaoyou in context: Street-network sprawl trends
Gaoyou in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gaoyou plotted against Jiangsu and China. The SNDi of new construction in Gaoyou followed a zig-zag trend with an overall decrease, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Gaoyou's incremental SNDi fell from 2.95 to 1.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gaoyou ranked 27th out of 101 cities in Jiangsu and 435th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.86
- Rank in China
- 185th of 1843
- Rank in Jiangsu
- 12th of 101
Entire Network (Aggregate)
- SNDi value
- 2.3
- Rank in China
- 435th of 1843
- Rank in Jiangsu
- 27th of 101
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Gaoyou fluctuated in its street-construction patterns, while Wafangdian built increasingly disconnected streets from 1975 through 1991-2005, then improved and Ya'an fluctuated in its street-construction patterns. Looking at the full network, Wafangdian and Ya'an both became progressively more disconnected, while Gaoyou fluctuated in connectivity. Notably, Gaoyou had a more sprawly network than Wafangdian in 1975 but the two have since reversed their relative ranking.