Nagqu in context: Street-network sprawl trends

Nagqu in context

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
NagquXizang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nagqu plotted against Xizang and China. The SNDi of new construction in Nagqu rose steadily, compared to Xizang which fell steadily and China which followed a zig-zag trend with an overall increase. Most recently, Nagqu's incremental SNDi rose from 3.03 to 3.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nagqu ranked 1st out of 3 cities in Xizang and 859th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.04
Rank in China
908th of 1843
Rank in Xizang
1st of 3

Entire Network (Aggregate)

SNDi value
2.8
Rank in China
859th of 1843
Rank in Xizang
1st of 3

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
NagquZagoraIhalav

In new street additions, Nagqu built increasingly disconnected streets over time, while Zagora built increasingly connected streets over time and Ihalav built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Nagqu became progressively more disconnected, while Zagora became progressively more connected and Ihalav became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Nagqu had a more connected network than Zagora in 1975 but the two have since reversed their relative ranking.