Preprint Article Version 1 NOT YET PEER-REVIEWED

Quantifying the spatiotemporal patterns of urbanization along urban-rural gradient with a roadscape transect approach: a case study in Shanghai, China

Zhonghao Zhang 1,2,* , Yao-Jen Tu 1,* , Xin Li 2
  1. Institute of urban studies, Shanghai Normal University, Shanghai 200234, China
  2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
Version 1 : Received: 29 July 2016 / Approved: 29 July 2016 / Online: 29 July 2016 (08:06:50 CEST)

A peer-reviewed article of this Preprint also exists.

Zhang, Z.; Tu, Y.; Li, X. Quantifying the Spatiotemporal Patterns of Urbanization along Urban-Rural Gradient with a Roadscape Transect Approach: A Case Study in Shanghai,China. Sustainability 2016, 8, 862. Zhang, Z.; Tu, Y.; Li, X. Quantifying the Spatiotemporal Patterns of Urbanization along Urban-Rural Gradient with a Roadscape Transect Approach: A Case Study in Shanghai,China. Sustainability 2016, 8, 862.

Journal reference: Sustainability 2016, 8, 862
DOI: 10.3390/su8090862

Abstract

Quantifying the landscape pattern change can effectively demonstrate the ecological progresses and the consequences of urbanization. Based on remotely sensed land cover data in 1994, 2000, 2006 and a gradient analysis with landscape metrics at landscape- and class- level, we attempted to characterize the individual and entire landscape patterns of Shanghai metropolitan during the rapid urbanization. We highlighted that a roadscape transect approach that combined the buffer zone method and the transect-based approach was introduced to describe the urban-rural patterns of agricultural, residential, green, industrial, and public facilities land along the railway route. Our results of landscape metrics showed significant spatiotemporal patterns and gradient variations along the transect. The urban growth pattern in two time spans conform to the hypothesis for diffusion–coalescence processes, implying that the railway is adaptive as a gradient element to analyze the landscape patterns with urbanization. As the natural landscape was replaced by urban landscape gradually, the urban fringe expanded radically. The results also showed that the desakota region expanded its extent widely. Satellite towns witnessed the continual transformation from the predominantly rural landscape to peri-urban landscape. Furthermore, the gap between urban and rural areas remained large especially in public service. More reasonable urban plans and land use policies should push to make more of an effort to transition from the urban-rural separation to coordinated urban-rural development. This study is a meaningful trial in demonstrating a new form of urban–rural transects to study the landscape change of large cities from a strategic viewpoint. By combining gradient analysis with landscape metrics, we addressed the process of urbanization both spatially and temporally, and provided a more quantitative approach to urban studies.

Subject Areas

urban-rural gradient; spatiotemporal patterns; landscape metrics; a roadscape transect approach; rapid urbanization; Shanghai

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