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A century of the evolution of the urban area in Shenyang, China.

Liu M, Xu Y, Hu Y, Li C, Sun F, Chen T - PLoS ONE (2014)

Bottom Line: The results showed that the urban area of Shenyang increased 43.39-fold during the study period and that the growth rate has accelerated since the 1980s.The results of landscape metrics indicate that the urban landscape of Shenyang originally was highly aggregated, but has become increasingly fragmented.Over a long time scale, the urbanization process has been affected by major historical events.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.

ABSTRACT
Analyzing spatiotemporal characteristics of the historical urbanization process is essential in understanding the dynamics of urbanization and scientifically planned urban development. Based on historical urban area maps and remote sensing images, this study examined the urban expansion of Shenyang from 1910 to 2010 using area statistics, typology identification, and landscape metrics approaches. The population and gross domestic product were analyzed as driving factors. The results showed that the urban area of Shenyang increased 43.39-fold during the study period and that the growth rate has accelerated since the 1980s. Three urban growth types were distinguished: infilling, edge-expansion, and spontaneous growth. Edge-expansion was the primary growth type. Infilling growth became the main growth type in the periods 1946-70, 1988-97, and 2004-10. Spontaneous growth was concentrated in the period of 1997 to 2000. The results of landscape metrics indicate that the urban landscape of Shenyang originally was highly aggregated, but has become increasingly fragmented. The urban fringe area was the traditional hot zone of urbanization. Shenyang was mainly located north of the Hun River before 1980; however, the south side of the river has been the hot zone of urbanization since the 1980s. The increase of urban area strongly correlated with the growth of GDP and population. Over a long time scale, the urbanization process has been affected by major historical events.

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Proportion of the three growth types in different periods.
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pone-0098847-g005: Proportion of the three growth types in different periods.

Mentions: The contribution of the three urban area growth types to the increased area is presented in Fig.5. Over the 100 years of the study period, the area of edge-expansion, infilling, and spontaneous growth was 775.40, 406.83, and 117.77 ha respectively. Edge-expansion was the primary growth type, accounting for 59.65%. Before 1946, the growth areas were mostly of the edge-expansion type. In the periods 1970–88 and 2000–04, edge-expansion accounted for over 70% of the growth. However, infilling became the main growth type during the periods 1946–70, 1988–97, and 2004–10. In contrast, spontaneous growth accounted only for 9.06% of the growth over the past century, and it was concentrated in the period of 1997 to 2000.


A century of the evolution of the urban area in Shenyang, China.

Liu M, Xu Y, Hu Y, Li C, Sun F, Chen T - PLoS ONE (2014)

Proportion of the three growth types in different periods.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4043834&req=5

pone-0098847-g005: Proportion of the three growth types in different periods.
Mentions: The contribution of the three urban area growth types to the increased area is presented in Fig.5. Over the 100 years of the study period, the area of edge-expansion, infilling, and spontaneous growth was 775.40, 406.83, and 117.77 ha respectively. Edge-expansion was the primary growth type, accounting for 59.65%. Before 1946, the growth areas were mostly of the edge-expansion type. In the periods 1970–88 and 2000–04, edge-expansion accounted for over 70% of the growth. However, infilling became the main growth type during the periods 1946–70, 1988–97, and 2004–10. In contrast, spontaneous growth accounted only for 9.06% of the growth over the past century, and it was concentrated in the period of 1997 to 2000.

Bottom Line: The results showed that the urban area of Shenyang increased 43.39-fold during the study period and that the growth rate has accelerated since the 1980s.The results of landscape metrics indicate that the urban landscape of Shenyang originally was highly aggregated, but has become increasingly fragmented.Over a long time scale, the urbanization process has been affected by major historical events.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.

ABSTRACT
Analyzing spatiotemporal characteristics of the historical urbanization process is essential in understanding the dynamics of urbanization and scientifically planned urban development. Based on historical urban area maps and remote sensing images, this study examined the urban expansion of Shenyang from 1910 to 2010 using area statistics, typology identification, and landscape metrics approaches. The population and gross domestic product were analyzed as driving factors. The results showed that the urban area of Shenyang increased 43.39-fold during the study period and that the growth rate has accelerated since the 1980s. Three urban growth types were distinguished: infilling, edge-expansion, and spontaneous growth. Edge-expansion was the primary growth type. Infilling growth became the main growth type in the periods 1946-70, 1988-97, and 2004-10. Spontaneous growth was concentrated in the period of 1997 to 2000. The results of landscape metrics indicate that the urban landscape of Shenyang originally was highly aggregated, but has become increasingly fragmented. The urban fringe area was the traditional hot zone of urbanization. Shenyang was mainly located north of the Hun River before 1980; however, the south side of the river has been the hot zone of urbanization since the 1980s. The increase of urban area strongly correlated with the growth of GDP and population. Over a long time scale, the urbanization process has been affected by major historical events.

Show MeSH
Related in: MedlinePlus