Qianyu in context: Street-network sprawl trends

Qianyu in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
QianyuSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qianyu plotted against Sichuan and China. The SNDi of new construction in Qianyu peaked in 1976-1990, 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, Qianyu's incremental SNDi fell from 4.07 to 3.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qianyu ranked 69th out of 98 cities in Sichuan and 1533rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.62
Rank in China
1200th of 1843
Rank in Sichuan
60th of 98

Entire Network (Aggregate)

SNDi value
3.94
Rank in China
1533rd of 1843
Rank in Sichuan
69th of 98

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
QianyuHoa BinhDamagum

Qianyu, Hòa Bình, and Damagum all built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street construction. For the full network, Qianyu grew more disconnected from 1975 through 1991-2005, then improved, while Hòa Bình became progressively more disconnected and Damagum grew more disconnected from 1975 through 1976-1990, then improved. Qianyu and Hòa Bình have been growing further apart in their street-network character since 1975.