Geo-environment risk assessment in Zhengzhou City, China. Issue 1 (1st January 2020)

• Record Type: Journal Article
• Authors: Ma, Chuanming; Yan, Wu; Hu, Xinjie; Kuang, Heng
• Is Part Of: Geomatics, natural hazards & risk. Volume 11:Issue 1(2020)
• Page Start: 40
• Page End: 70
• Publication Date: 2020-01-01
• Subjects: Geo-environment risk assessment -- geological environmental danger -- social-economic vulnerability -- Zhengzhou City; Geomatics -- Periodicals; Geomatics; Periodicals; 526.905
• DOI: 10.1080/19475705.2019.1701571
• Languages: English
• ISSNs: 1947-5705

Abstract

Abstract: The urban geological environment risk assessment is based on the research and analysis of the main geological environmental problems of the city, comprehensively assessing the risk of urban geological environment problems and the possible losses, and studying the degree of matching between the natural and social attributes of the geological environment. According to the urban planning of Zhengzhou City, the different types of functional areas of the city were used as evaluation objects, and the analytic hierarchy-composite index model was used to evaluate the geological environment risk and social economic vulnerability. The risk assessment model was used to evaluate the geological environment risk of Zhengzhou City. The evaluation results show that the area of high-risk area in Zhengzhou accounts for 4.05%; the area of medium-high risk area accounts for 12.89%; the area of medium-low and low-risk area accounts for 83.06%. According to the assessment results, suggestions are put forward to provide service for the urban planning, development and risk management. Highlights: An urban geo-environment risk assessment technique system combining with the AHP - composite index assessment model is proposed. Different types of functional zones in Zhengzhou City are taken as assessment units. Geo-environment risk in Zhengzhou City is qualitatively and quantitatively evaluated.