Heihe in context: Street-network sprawl trends

Heihe in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
HeiheHeilongjiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Heihe plotted against Heilongjiang and China. While Heilongjiang and China both followed a zig-zag trend with an overall increase, Heihe's new street additions followed a zig-zag trend with an overall decrease. Most recently, Heihe's incremental SNDi rose from 3.8 to 5.09 between 1991-2005 and 2006-2020. In terms of the aggregate network, Heihe ranked 67th out of 67 cities in Heilongjiang and 1756th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.09
Rank in China
1652nd of 1843
Rank in Heilongjiang
62nd of 67

Entire Network (Aggregate)

SNDi value
5.35
Rank in China
1756th of 1843
Rank in Heilongjiang
67th of 67

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
HeiheTando Muhammad KhanTancheng

In new street additions, Heihe and Tando Muhammad Khan both fluctuated in its street-construction patterns, while Tancheng built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Heihe grew more disconnected from 1975 through 1976-1990, then improved, while Tando Muhammad Khan fluctuated in connectivity and Tancheng grew more disconnected from 1975 through 1991-2005, then improved.