Research On The Evaluation Of City Circular Economy In China

With the whole world ecological environments become worsening and the coming of resource crisis, all the countries in the world in different degrees take developing circular economy as a homeland economic growth way. Smelly, in our country saving on resources has been taken as the basic state policy on the eleventh development plan for five years. The plan brings forward circular economy, preserving the ecological environment to build saving and amicable environment type society. Based on circulation economy relevance theory and combined with wedlock system theory thoughts, the paper have analyzed the model that the economic growth three having composed tier of face, and having structured city circulation in city circulation economic growth process appraises.First, the paper has arranged a lot of viewpoints and forward position theory in present cycle economic growth process. The paper has set forth relevant city circulation economic growth theory such as sustainable development theory, circulation economy theory, clean production theory, organism's habits city theory, and clear city circulation economic growth theory origin.Secondly, the paper has established the city circulation economic growth valuation model. On the basis making city circulation economy connotation clear, the current situation developing circulation economy combining with our country city, three system having suggested that the city develops circulation economy face tier : Internal resource of enterprise cycles, the resource between enterprise cycles and city overall resource cycles. By analyzing city overall circulation economic system, the paper established the concept of the model appraising model and appraising quantization.Thirdly, on the choice of appraising method, the paper has carried out the exploration and innovation. Though process neural networks be valuation economic system forceful implement, its operation blemish make valuation result deflect actual or can not reach valuation purpose, use hereditary algorithm come improvement neural networks energy more effective field valuation circulation economic development. The paper applied the circulation economic evaluation model to the Qingdao city to evaluate its circulation economic development level. It is proved that the error between the reality estimating result and actual result is 0.05. The comparatively horizontal approaching proved that the appraisal model and the choice of appraisal method are feasible. Fourthly, on the base of the developed country's experiences about circular economy, taking the world conditions around our country into count, the paper pointed some basic thoughts for our country city circulation economic growth. At the same time, the paper also has brought forward some priorities and countermeasures for the present circular economy development.