| Industrial park is the most important carrier of industrialization. With the continuous development and growth, as well as the great suffering from pressure of resource depetion, environmental pollution and market competition, Chinese government began to focus on the environmental management for industrial parks and try to guide their transformation towards to Eco-industrial Park model, called "complex industrial ecosystem". However, neither the environmental management, nor the transformation is a quick sale, the resource consumption and environmental pollution from industrial park is still serious. It is a big challenge that how to evaluate and optimize the development of industrial park in such a sustainable background for both research and practice.As a key method in the field of environmental accounting, Emergy Analysis is very valuable for systematic analysis and evaluation. Since Emergy Analysis is sourcing from a unique theory and methodology, it could convert all different types of material and energy to the same unit, the "solar value", thus bring great benefit to environmental loading accounting and environmental-economic performance evaluation. Besides, Emergy Theory is established based on the material and energy flows principle of the biosphere, therefore, it reflects the real value of resource and environmental services.This thesis takes Complex Industrial Ecosystem as main research objective and Emergy Theory as main research method to explore the scientific sustainable development evaluation method and optimization path for Complex Industrial Ecosystem, hoping to provide decision support for the government to improve industrial parks'environmental and economic performance and promote transformation of economic development.Firstly, through the theory analysis from the view of Emergy, the basic characteristic and rules of Complex Industrial Ecosystem are recovered and an Emergy Analysis Framework is established. Based on the theoretical analysis and literature research, the research analyzed the causes of suitability problem in the locally transformity application procedure, and then oriented by the problem, the transformity optimization method facing Complex Industrial Ecosystem is put forward, and a further case study verified its operability and effectiveness.Secondly, considering the industrial resources allocation has broken the geographical constraints in the background of economic globalization, this research discussed the limitations of the current renewable ratio emergy indicator, and put forward the ratio of total renewable based on import traced and proposed its calculation method, which provide a new perspective for emergy analysis. In addition, in order to evaluate the waste recycling and utilization, this research clearly reviewed the literature about byproduct transformity, and based on definition analysis and comparison of co-product, byproduct and split, a byproduct recycling emergy evaluation indicator is proposed. At last, the Complex Industrial Ecosystem emergy evaluation indicator system is established. The indicator system composes three dimensions including system structure, function and performance to ensure its integrity, so that it has relatively high academic and practical value.Thirdly, based on the methodological characteristics of emergy analysis and evaluation indicator characteristics analysis, this research put forward the critical barrier recognition method and optimization path for Complex Industrial Ecosystem. Then, by using scenario analysis, the critical emergy flow changes after any optimization program is clarified and diagramed, based on this, the evaluation indicator system and selection framework for optimal programs are further proposed. This evaluation indicator system and selection framework have not only expanded the emergy research field, but also could provide theoretical basis and advanced decision-making to help the government to promote environmental management and ecological construction.Finally, Dalian Economic and Technology Development Zone is selected for case study. In accordance with the Complex Industrial Ecosystem emergy analysis framework, the emergy analysis, evaluation and optimization are carried out. The case study demonstrates the reasonability, effectiveness and operability of the whole Complex Industrial Ecosystem emergy analysis framework, evaluation indicator system and optimization path design and optimal programs selection framework.
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