Sihecun in context: Street-network sprawl trends

Sihecun in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
SihecunAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sihecun plotted against Anhui and China. The SNDi of new construction in Sihecun was at its lowest in 1991-2005, 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, Sihecun's incremental SNDi rose from 2.88 to 6.61 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sihecun ranked 60th out of 74 cities in Anhui and 1265th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
6.61
Rank in China
1778th of 1843
Rank in Anhui
72nd of 74

Entire Network (Aggregate)

SNDi value
3.32
Rank in China
1265th of 1843
Rank in Anhui
60th of 74

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

What about similarly populated cities?

481216<19751976–19901991–20052006–2020SNDi of street additions
481216<19751976–19901991–20052006–2020SNDi of entire street network
SihecunShepoEzakheni

While Shepo and Ezakheni both built increasingly disconnected streets over time, Sihecun built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. Looking at the full network, Shepo and Ezakheni both became progressively more disconnected, while Sihecun became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Sihecun had a more sprawly network than Shepo in 1975 but the two have since reversed their relative ranking.