Nandagang Management Area in context: Street-network sprawl trends

Nandagang Management Area 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
Nandagang Management AreaHebei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nandagang Management Area plotted against Hebei and China. The SNDi of new construction in Nandagang Management Area was at its lowest in 1976-1990, compared to Hebei which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Nandagang Management Area's incremental SNDi rose from 2.55 to 3.05 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nandagang Management Area ranked 31st out of 120 cities in Hebei and 573rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.05
Rank in China
913th of 1843
Rank in Hebei
54th of 120

Entire Network (Aggregate)

SNDi value
2.49
Rank in China
573rd of 1843
Rank in Hebei
31st of 120

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

What about similarly populated cities?

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
Nandagang Management AreaAl ReheliRoudan

In new street additions, Nandagang Management Area and Al Reheli both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Roudan built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Nandagang Management Area became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Al Reheli fluctuated in connectivity and Roudan grew more disconnected from 1975 through 1976-1990, then improved. Nandagang Management Area and Al Reheli have been converging in their street-network character since 1975.