Taojiang County in context: Street-network sprawl trends

Taojiang County in context

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
Taojiang CountyHunan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Taojiang County plotted against Hunan and China. The SNDi of new construction in Taojiang County 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, Taojiang County's incremental SNDi fell from 2.87 to 2.17 between 1991-2005 and 2006-2020. In terms of the aggregate network, Taojiang County ranked 35th out of 89 cities in Hunan and 748th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.17
Rank in China
320th of 1843
Rank in Hunan
21st of 89

Entire Network (Aggregate)

SNDi value
2.69
Rank in China
748th of 1843
Rank in Hunan
35th of 89

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
Taojiang CountyAdigratYendi

In new street additions, Taojiang County built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Adigrat built increasingly disconnected streets over time and Yendi built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Taojiang County grew more disconnected from 1975 through 1991-2005, then improved, while Adigrat became progressively more disconnected and Yendi became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Taojiang County and Adigrat have been converging in their street-network character since 1975.