Daying in context: Street-network sprawl trends

Daying in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
DayingSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Daying plotted against Sichuan and China. The SNDi of new construction in Daying was at its lowest 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, Daying's incremental SNDi rose from 2.17 to 4.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Daying ranked 37th out of 98 cities in Sichuan and 913th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.0
Rank in China
1401st of 1843
Rank in Sichuan
71st of 98

Entire Network (Aggregate)

SNDi value
2.86
Rank in China
913th of 1843
Rank in Sichuan
37th of 98

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
DayingTonghaiSan Fernando

In new street additions, Daying built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Tonghai fluctuated in its street-construction patterns and San Fernando built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Daying became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Tonghai fluctuated in connectivity and San Fernando became progressively more disconnected. Daying and Tonghai have been converging in their street-network character since 1975.