Chihu in context: Street-network sprawl trends
Chihu in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chihu plotted against Henan and China. The SNDi of new construction in Chihu rose steadily, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Chihu's incremental SNDi rose from 2.35 to 3.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chihu ranked 51st out of 129 cities in Henan and 372nd out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 3.62
- Rank in China
- 1206th of 1843
- Rank in Henan
- 107th of 129
Entire Network (Aggregate)
- SNDi value
- 2.22
- Rank in China
- 372nd of 1843
- Rank in Henan
- 51st of 129
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Chihu built increasingly disconnected streets over time, while Subic fluctuated in its street-construction patterns and Vigan built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Chihu and Vigan both became progressively more disconnected, while Subic fluctuated in connectivity.