Study On Emergy Analysis Of Ecological-Economic System And Sustainable Development In Anhui Province

Emergy analysis method converts all kinds of energy and materials into equivalents standards of sunlight, provides an approach to analyze quantitatively the true value between natural environment and human economic activities, to access the sustainable development performance of the system.Emergy analysis can help us to adjust the relationship between ecological environment and economic development. It plays an important role in assessing the natural resources scientifically, constituting economic measures and forecasting the future development trends of eco-economic system.Firstly, the paper summarizes the status of emergy research at home and abroad briefly, and then sums up the development history and the deficiencies of domestic emergy researches, evaluates objectively of the role and significance of emergy analysis, therefore, to determine the focus and the issues to be aware of in this article. Secondly, the paper introduces the process and the concrete step of emergy analysis of eco-economic system in detail.According to the characters of Anhui eco-economic system, an energy flow chart is drawn and the system of emergy indexes is established. On the basis of the relevant scholars, a index named emergy-based region ecosystem health index (EREHI) was created in this paper. Combine the data of Anhui province, this paper has carried on dynamic emergy analysis to Anhui ecosystem from 1990 to 2008 by four indexes, i.e., the indexes of emergy structure, the indexes of social subsystem, the indexes of economic subsystem and the indexes of natural subsystem.Thirdly, ternary diagram is introduced to the emergy analysis of Anhui eco-economic system, and make an intuitive emergy-based ternary diagram analysis of Anhui province from three aspects including resource line, sensitive line and sustainable line. According to the system development, to forecast the direction of system development and discuss the correct path to the future sustainable development of the system.Make a comparative study of emergy-based ternary diagram between Anhui and other four provinces in china, then find out the gaps and problems in Anhui Province. Lastly, the development status and problems of Anhui eco-economic system that have been found from emergy analysis and ternary diagram analysis are summarizd, and then the paper proposed a series of policy and suggestion which suit for the sustainable development of Anhui eco-economic system.