Sanming in context: Street-network sprawl trends
Sanming in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sanming plotted against Fujian and China. While Fujian and China both followed a zig-zag trend with an overall increase, Sanming's new street additions followed a zig-zag trend with an overall increase. Most recently, Sanming's incremental SNDi rose from 3.87 to 5.15 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sanming ranked 40th out of 75 cities in Fujian and 1250th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 5.15
- Rank in China
- 1663rd of 1843
- Rank in Fujian
- 61st of 75
Entire Network (Aggregate)
- SNDi value
- 3.3
- Rank in China
- 1250th of 1843
- Rank in Fujian
- 40th of 75
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Sanming and Baoying both fluctuated in its street-construction patterns, while Liuyang built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Sanming became progressively more disconnected, while Baoying fluctuated in connectivity and Liuyang grew more disconnected from 1975 through 1991-2005, then improved. Notably, Sanming had a more sprawly network than Liuyang in 1975 but the two have since reversed their relative ranking.