Zigong in context: Street-network sprawl trends
Zigong in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zigong plotted against Sichuan and China. The SNDi of new construction in Zigong fell steadily, compared to Sichuan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Zigong's incremental SNDi fell from 2.54 to 1.74 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zigong ranked 27th out of 98 cities in Sichuan and 654th out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.74
- Rank in China
- 134th of 1843
- Rank in Sichuan
- 5th of 98
Entire Network (Aggregate)
- SNDi value
- 2.59
- Rank in China
- 654th of 1843
- Rank in Sichuan
- 27th of 98
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Honolulu, United States
- Homel, Belarus
- Dresden, Germany
- Latur, India
- Kagoshima, Japan
- Damanhur, Egypt
In new street additions, Zigong built increasingly connected streets over time, while Honolulu built increasingly disconnected streets from 1975 through 1976-1990, then improved and Latur built increasingly disconnected streets over time. For the full network, Zigong became progressively more connected, while Honolulu grew more disconnected from 1975 through 1991-2005, then improved and Latur became progressively more disconnected. Notably, Zigong had a more sprawly network than Latur in 1975 but the two have since reversed their relative ranking.