Yongning in context: Street-network sprawl trends
Yongning in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yongning plotted against Fujian and China. The SNDi of new construction in Yongning was at its lowest in 1991-2005, compared to Fujian which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yongning's incremental SNDi rose from 3.3 to 4.91 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yongning ranked 51st out of 75 cities in Fujian as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 4.91
- Rank in Fujian
- 57th of 75
Entire Network (Aggregate)
- SNDi value
- 3.72
- Rank in Fujian
- 51st of 75
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
While Kashmar and Imehejek both fluctuated in its street-construction patterns, Yongning built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. For the full network, Yongning became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Kashmar became progressively more connected and Imehejek fluctuated in connectivity. Yongning and Imehejek have been converging in their street-network character since 1975.