The Quantitative Economic Analysis Method Of Floor Area Ratio

Urban planning is one kind of the method that distributing resources most effectively, especially to land resources. The land utilization economic performance is a critical factor evaluating scientific level of decision-making in planning. Land price reflects an output standard of land, and is an important tool judging reasonable and scientific level of land use planning. To the city government, land price is the nucleus quota evaluating the land utilization economic performance. To real estate development trade, the nucleus quota is the profit of real estate commercial action. FAR is the most important quota of land use intensity in regulatory planning, and urban development intensity directly influences the economic performance of land user, so FAR is to give the decisive influence to the land economic performance, no matter to the city government or to real estate development trade.To determine FAR reasonably, we should think over three big beneficial results (social, economic, environmental) as a whole. In addition, using the method of quantitative economic analysis is the important guaranty in embodying the economic results in city planning. In the foundation of summarizing and appraising the internal FAR research, this thesis put forward the coming direction of FAR research in the future. To purify the factors relating to quantitative economic analysis method, this thesis analyzed many factors that influencing FAR. And even more, this thesis summed up merit and the shortcoming of the traditional method of defining FAR. To construct the quantitative economic analysis method, this paper indicates the necessity of using "input-output" method to determine FAR in regulatory planning by researching the interface of FAR, land price and profit of real estate development, then explaining the feasibilities and limitations of this method, and using this method to provides the technology support for the government policy adjusting the real estate market. Moreover, this paper takes an example of regulatory planning in Nanmen district of Jiangyin city to explain the method.