关键词: 滑坡易发性;城镇发展水平;耦合协调度;随机森林;重庆市中心城区;

Abstract: In order to quantitatively reveal the inherent law of landslide susceptibility and urban development level and promote the high-quality development of cities and towns, we constructed an evaluation system by selecting several indicators, and analyzed the spatial and temporal distribution and coupling coordination of landslide susceptibility and urban development level in central urban area of Chongqing City in 2015 and 2019 based on RF-EWM model and coupling coordination model.The results showed that:(1)The landslide susceptibility and regional landslide susceptibility differences in Chongqing′s central urban area showed an overall downward trend.(2)In 2015 and 2019,the urban development levels of the eight districts in the central urban area of Chongqing City were lower than 0.4 except Yuzhong District, and the difference of urban development level between regions was large.(3)In 2015 and 2019,the coupling degree between urban development level and landslide susceptibility in Chongqing City was higher than 0.5,with strong interaction relationship; the coupling coordination degree was higher than 0.4,which was in the coordination stage; and the the coupling coordination degree of Dadukou District, Jiulongpo District, Beibei District and Banan District showed a decreasing trend.The research results can provide reference for landslide prevention and urban development in Chongqing City.

Key words: landslide susceptibility; urban development level; coupling coordination degree; random forest; central urban area of Chongqing City;