Hannan District in context: Street-network sprawl trends

Hannan District in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
Hannan DistrictHubei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hannan District plotted against Hubei and China. While Hubei and China both followed a zig-zag trend with an overall increase, Hannan District's new street additions followed a zig-zag trend with an overall increase. Most recently, Hannan District's incremental SNDi rose from 1.81 to 3.32 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hannan District ranked 50th out of 77 cities in Hubei and 1130th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.32
Rank in China
1060th of 1843
Rank in Hubei
45th of 77

Entire Network (Aggregate)

SNDi value
3.14
Rank in China
1130th of 1843
Rank in Hubei
50th of 77

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
Hannan DistrictShabundaShinshicho

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