Research on the Spatiotemporal Expansion of Chongqing Derived from Integrated DMSP-OLS and NPP-VIIRS Nighttime Light Data

Fangchen Shi ()
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Fangchen Shi: Chongqing University

A chapter in Proceedings of the 25th International Symposium on Advancement of Construction Management and Real Estate, 2021, pp 1121-1136 from Springer

Abstract: Abstract In the past few decades, China has been implementing a large-scale urbanization process, and this trend will continue to be maintained in the future decades. However, the temporal and spatial expansion of different cities shows different characteristics. This paper takes Chongqing as the research object as a typical representative of the development of cities in western China. Through the integration of NPP-VIIRS and DMSP-OLS data, a long-term and comparable integrated data set for the research object from 1992 to 2017 is formed. This research further selects the data of 1992, 1997, 2002, 2007, 2012, and 2017 as the research time nodes to explore the spatiotemporal expansion of Chongqing. The findings of the study are as follows: (1) The extent of urban expansion in Chongqing is showing an increasing trend as a whole, but the expansion of the main urban area in Chongqing is the main area, showing the obvious characteristics of “single-core expansion”; other areas have not achieved significant development. (2) The urban expansion of Chongqing showed different characteristics in different time periods, which was mainly affected by policy and national conditions changes. (3) The urban expansion elasticity coefficient in Chongqing is irrational in different stages. (4) The overall spatial distribution of Chongqing generally presents a “southwest-northeast” pattern. And its spatial evolution shows obvious characteristics of expansion first and then contraction with the spatial center of gravity moved to the northeast at the early stages and then to the southwest. The research suggests that Chongqing Municipal Government should pay attention to the construction and development of underdeveloped areas outside the main urban area to enhance the interconnection between different areas and strengthen the hierarchical and organic links between various areas, thus further to continuously improve the level of opening up of the city.

Keywords: Nighttime light data; Data integration; Spatiotemporal expansion pattern; Chongqing (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-981-16-3587-8_75

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DOI: 10.1007/978-981-16-3587-8_75

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