A Case Study of Flood Risk Evaluation Based on Emergy Theory and Cloud Model in Anyang Region, China

With the progression of climate change, intensity and frequency extreme rainfall have increased in many parts world, while continuous acceleration urbanization has made cities more vulnerable to floods. In order effectively estimate assess risks brought by flood disasters, this paper proposes a regional disaster risk assessment model combining emergy theory cloud model. The can measure kinds hazardous factor convert them into unified solar (sej) for quantification. transform uncertainty certainty an appropriate way, making urban accurate effective. study, combines advantages two research methods establish natural social dual system. Based on this, system hazard is established. This was used assessment, level divided five levels: very low risk, medium high risk. Flood results were obtained using entropy weight method fuzzy transformation method. As example application model, focuses Anyang region which typical continental monsoon climate. show that serious threat. Within region, Linzhou County levels disaster, Hua County, Neihuang Wenfeng District Beiguan disaster. These areas are core economic center local administrative regions, with 70% industrial clusters being situated these regions. Only coordinated development control planning, economy, population, reductions existing drainage facilities sustainable, healthy stable be maintained.