Qishan in context: Street-network sprawl trends
Qishan in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qishan plotted against Shaanxi and China. The SNDi of new construction in Qishan peaked in 1976-1990, compared to Shaanxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Qishan's incremental SNDi fell from 3.69 to 3.12 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qishan ranked 47th out of 62 cities in Shaanxi and 1321st out of 1843 in China as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 3.12
- Rank in China
- 955th of 1843
- Rank in Shaanxi
- 35th of 62
Entire Network (Aggregate)
- SNDi value
- 3.42
- Rank in China
- 1321st of 1843
- Rank in Shaanxi
- 47th of 62
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Pasir Pengaraian, Indonesia
- Xundian, China
- Angren, Uzbekistan
- Qa`tabah, Yemen
- Yushu, China
- Taeryonggang, North Korea
In new street additions, Qishan built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Pasir Pengaraian fluctuated in its street-construction patterns and Qa`tabah built increasingly disconnected streets over time. Looking at the full network, Pasir Pengaraian and Qa`tabah both became progressively more disconnected, while Qishan grew more disconnected from 1975 through 1991-2005, then improved. Notably, Qishan had a more sprawly network than Pasir Pengaraian in 1975 but the two have since reversed their relative ranking.