The conservation of historic districts is a complicated and systematic engineering,involving such disciplines as history, urban planning, architecture, economics, sociology,management, law, etc, including different phases from theory to methodology to practice. The research upon protecting and exploring of historic districts,as a point of historic districts, owns its theoretical and practical significance.In the light of current conservation conditions of historic districts , and maintaining theory invention, methodology invention, and system invention, this essay approaches and constructs the Market model of historic districts. First of all, from Theories and Practice,through investigation and analyzes exiting problems and the dilemmas encountered with the cases of conservation over Domestic and Abroad. Secondly, introduced three models used in historic districts at present,there advantage and Inadequate, Furthermore, the necessity of using Market model in historic districts. In the light of Market model, research it'idea and all kinds of mechanism.The last introduced the exploitation of Austrian style block In Tianjin,provided a good example for the using of Market model.
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