Urban Expansion in Border Areas and the Impact from Ports and Trade: A Case Study of Ruili City

Authors: Miao Yi*, Beijing Normal University, Jinping Song, Beijing Normal University
Topics: Regional Geography, China, Remote Sensing
Keywords: Urban expansion, Port, Regression analysis, Border areas, Ruili City
Session Type: Poster
Presentation File: No File Uploaded

Taking Ruili City as study area, using remote sensing images data every 5 years from 1989 to 2019 to analyze urban expansion characteristics and the influence from ports and trade. Results showed that, (1) Ruili City's urban areas were fast expanding and brightening during study period. Main urban area located in Mengmao Town, and non-equilibrium and potential poly-centric pattern gradually formed. (2) Periodical characteristic of urban expansion is obvious. From 1989 to 2009, urban expansion had been accelerating, while the direction of urban areas’ spatial mean center migration mainly pointed to ports and border line. Since 2014, urban land of Ruili port area gradually connected with the main urban area, and urban mainly expanded along the border line. (3) The distance to port is the driving factor for the conversion of non-urban land to urban land. Port trade further exert influence on urban expansion, making ports and channels exert their corridor effect for accelerating surrounding land use conversion. (4) Though urban expand along border line, the distance to border line is not always a significant factor, which means there is a scale effect that the characteristic of urban expand along border is only applicable to specific scales. (5) The influence of different ports also different. Core port has more functions and the effect on urban expansion has both attractive force and external thrust force. Other ports can improve elements circulation also but they basically only change the land use of surrounding land.

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