Sartu in context: Street-network sprawl trends

Sartu 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
SartuHeilongjiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sartu plotted against Heilongjiang and China. The SNDi of new construction in Sartu was at its lowest in 1976-1990, compared to Heilongjiang which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Sartu's incremental SNDi rose from 2.59 to 2.83 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sartu ranked 26th out of 67 cities in Heilongjiang and 390th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.83
Rank in China
759th of 1843
Rank in Heilongjiang
30th of 67

Entire Network (Aggregate)

SNDi value
2.25
Rank in China
390th of 1843
Rank in Heilongjiang
26th of 67

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
SartuItapevaHeping

In new street additions, Sartu built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Itapeva built increasingly disconnected streets over time and Heping fluctuated in its street-construction patterns. For the full network, Sartu became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Itapeva became progressively more disconnected and Heping grew more disconnected from 1975 through 1976-1990, then improved. Sartu and Itapeva have been converging in their street-network character since 1975.