Yichuan in context: Street-network sprawl trends
Yichuan in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yichuan plotted against Henan and China. The SNDi of new construction in Yichuan peaked in 1976-1990, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yichuan's incremental SNDi fell from 2.76 to 2.41 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yichuan ranked 70th out of 129 cities in Henan and 696th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 2.41
- Rank in China
- 460th of 1843
- Rank in Henan
- 61st of 129
Entire Network (Aggregate)
- SNDi value
- 2.64
- Rank in China
- 696th of 1843
- Rank in Henan
- 70th of 129
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Houma, China
- Changyuan, China
- Runan, China
- Bridgetown, Barbados
- Kirumba, Democratic Republic of the Congo
- Dambidollo, Ethiopia
In new street additions, Yichuan and Houma both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Bridgetown built increasingly disconnected streets over time. For the full network, Yichuan grew more disconnected from 1975 through 1991-2005, then improved, while Houma grew more disconnected from 1975 through 1976-1990, then improved and Bridgetown became progressively more disconnected.