Analysis of urban construction land expansion pattern and scale system in Chengdu-Chongqing urban agglomeration

doi:10.13474/j.cnki.11-2246.2020.0223

Abstract

Abstract: Based on the urban construction land information extracted from six periods of remote sensing images of from 1990 to 2018, this paper aims to unveil the temporal law and characteristics of urban agglomeration urban construction land expansion from the aspects of expansion intensity, hot spots, modes and urban agglomeration scale system. The results show that the growth rate of the expansion of urban construction land in Chengdu-Chongqing urban agglomeration is rapid first and then becoming slow with time. The high expansion density of urban construction land in Chengdu-Chongqing urban agglomeration is mainly concentrated in Chengdu and Chongqing, and the continuous development of urban agglomeration is not obvious. The new urban land in urban agglomeration presents a disorderly trend of sprawl and does not tend to be compact. The urban system of Chengdu-Chongqing urban agglomeration shows obvious dual-core characteristic, and the development of small and medium-sized cities is insufficient, but the scale distribution gradually changes from non-equilibrium to equilibrium over time.

Key words: Chengdu-Chongqing urban agglomeration, urban construction land, expansion mode, urban scale system, spatio-temporal analysis

CLC Number:

P208

ZHANG Yaping, ZHANG Ping, SUN Danfeng, LIU Shunxi, LUN Fei. Analysis of urban construction land expansion pattern and scale system in Chengdu-Chongqing urban agglomeration[J]. Bulletin of Surveying and Mapping, 2020, 0(7): 103-107.

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