Journal of Geo-information Science >
Relationship between the Structure of Urban Traffic Network and Urban Spatial Expansion：A Case Study of Dongguan City
Received date: 2013-05-13
Revised date: 2013-06-13
Online published: 2014-01-05
With the development of urbanization, there is a close relationship between the structure of urban traffic network and urban spatial expansion. Development of traffic system is caused by urban spatial form, land use development, land price and land use layout feature changes, conversely, land use change also acts on the structure of urban traffic network and road density. How to quantitatively describe the strength of urban road network density and urban land-use change is a key scientific issue. This research takes Dongguan City as an example, through remote sensing images in 2001, 2005 and 2009, using the kernel density estimation (KDE) to describe the intensity of newly added urban land use and explore the relationship between urban road network density and urban spatial expansion. The results showed that, during the period of 2001-2005, the city had a great change in road network with the highway as the mainly new road type. Urban expansion was rapid, with a relatively large amount of newly added urban land use area, especially in the edge region where the road network density is high. During the period of 2005-2009, with the development of road network, county road was the mainly new road type, and the newly added urban land use growth also slowed down. The significance test of correlation coefficient showed: during 2001-2009 period in Dongguan City, at the confidence level of 95%, the correlation coefficient R(xy) of the road network density, of the weighted density (x) and of the kernel density (y) are all larger than 0.1946, which indicated that those three factors are significantly related.
Key words： urban expansion; road density; kernel density; Dongguan City
FENG Zhixin, CHEN Yingbiao, QIAN Qinglan, WANG Shuaishuai . Relationship between the Structure of Urban Traffic Network and Urban Spatial Expansion：A Case Study of Dongguan City[J]. Journal of Geo-information Science, 2014 , 16(1) : 79 -86 . DOI: 10.3724/SP.J.1047.2014.00079
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