Changliu in context: Street-network sprawl trends

Changliu in context

3.544.5<19751976–19901991–20052006–2020SNDi of street additions
3.544.5<19751976–19901991–20052006–2020SNDi of entire street network
ChangliuHainan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Changliu plotted against Hainan and China. The SNDi of new construction in Changliu peaked in 1991-2005, compared to Hainan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Changliu's incremental SNDi fell from 4.05 to 3.44 between 1991-2005 and 2006-2020. In terms of the aggregate network, Changliu ranked 13th out of 17 cities in Hainan and 1466th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.44
Rank in China
1126th of 1843
Rank in Hainan
6th of 17

Entire Network (Aggregate)

SNDi value
3.7
Rank in China
1466th of 1843
Rank in Hainan
13th of 17

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

What about similarly populated cities?

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
ChangliuLakewood TownshipBukit Rangin

Changliu, Lakewood Township, and Bukit Rangin all built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street construction. Looking at the full network, Lakewood Township and Bukit Rangin both became progressively more disconnected, while Changliu grew more disconnected from 1975 through 1991-2005, then improved. Changliu and Lakewood Township have been converging in their street-network character since 1975.