Tongling in context: Street-network sprawl trends

Tongling in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
TonglingAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tongling plotted against Anhui and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Tongling's incremental SNDi rose from 2.77 to 2.91 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tongling ranked 38th out of 74 cities in Anhui and 660th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.91
Rank in China
821st of 1843
Rank in Anhui
45th of 74

Entire Network (Aggregate)

SNDi value
2.6
Rank in China
660th of 1843
Rank in Anhui
38th of 74

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
TonglingGemenaMuzaffargarh

In new street additions, Tongling and Gemena both fluctuated in its street-construction patterns, while Muzaffargarh built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Tongling and Gemena both became progressively more disconnected, while Muzaffargarh grew more disconnected from 1975 through 1991-2005, then improved. Notably, Tongling had a more sprawly network than Gemena in 1975 but the two have since reversed their relative ranking.