Qidong in context: Street-network sprawl trends
Qidong in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qidong plotted against Hunan and China. The SNDi of new construction in Qidong peaked in 1976-1990, compared to Hunan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Qidong's incremental SNDi fell from 2.53 to 1.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qidong ranked 36th out of 89 cities in Hunan and 758th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.62
- Rank in China
- 97th of 1843
- Rank in Hunan
- 5th of 89
Entire Network (Aggregate)
- SNDi value
- 2.7
- Rank in China
- 758th of 1843
- Rank in Hunan
- 36th of 89
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
Qidong, Jieshi, and Шелепино all built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street construction. For the full network, Qidong and Шелепино both grew more disconnected from 1975 through 1976-1990, then improved, while Jieshi grew more disconnected from 1975 through 1991-2005, then improved. Qidong and Jieshi have been growing further apart in their street-network character since 1975.