Mengcheng in context: Street-network sprawl trends

Mengcheng in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
MengchengAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Mengcheng plotted against Anhui and China. The SNDi of new construction in Mengcheng peaked in 1976-1990, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Mengcheng's incremental SNDi fell from 1.94 to 1.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mengcheng ranked 5th out of 74 cities in Anhui and 39th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.18
Rank in China
24th of 1843
Rank in Anhui
1st of 74

Entire Network (Aggregate)

SNDi value
1.47
Rank in China
39th of 1843
Rank in Anhui
5th of 74

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
MengchengPuerto PlataMthatha

In new street additions, Mengcheng built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Puerto Plata built increasingly disconnected streets over time and Mthatha fluctuated in its street-construction patterns. For the full network, Mengcheng grew more disconnected from 1975 through 1991-2005, then improved, while Puerto Plata became progressively more disconnected and Mthatha fluctuated in connectivity. Mengcheng and Puerto Plata have been growing further apart in their street-network character since 1975.