Guiyang in context: Street-network sprawl trends
Guiyang in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Guiyang plotted against Hunan and China. The SNDi of new construction in Guiyang followed a zig-zag trend with an overall increase, compared to Hunan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Guiyang's incremental SNDi fell from 2.87 to 2.12 between 1991-2005 and 2006-2020. In terms of the aggregate network, Guiyang ranked 18th out of 89 cities in Hunan as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 2.12
- Rank in Hunan
- 20th of 89
Entire Network (Aggregate)
- SNDi value
- 2.35
- Rank in Hunan
- 18th of 89
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Guiyang fluctuated in its street-construction patterns, while Бункерная built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Pala built increasingly disconnected streets over time. For the full network, Guiyang fluctuated in connectivity, while Бункерная became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Pala became progressively more disconnected.