住宅地開発と環境整備の調整原理

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The housing probrem has already converted from simple quantitative problems to qualitative problems which aim to create comfortable residential area.The environmental conditions between development area and its surrounding area become important factor for the planning process.The environment-oriented residential area development planning aimes at regional environment harmony under the development.Although we can find several confrontations among the interests groups connected with the development planning.The object of this paper is to examine the principle of the adjustment of the confrontation among the interests groups concerned with residential area development planning which is strictly subjected to environmental conditions.Especially, the confrontation between the economic efficiency and the environmental conservation has been studied with the Conflict-Management Model.A method of evaluating the harmonic degree between economy and environment is named “Conflict-Management Model of Development of Residential Area”.The frame of the model shows the states of conflicts among the interests groups who would like to maximize their own benefits. Namely, in this model, each interests groups enable to introduce his request by negotiating with a planner (developer).Therefore, “Operative Simulation Model” is built to get a more concrete answers. In this model, the optimum solution about the conflict of the interests groups will gain by the maximum value of the sum of cost-benefit ratios of theirs. In this paper, the profit of developer is examined as a representative value of cost-benefit ratio.To put it more concretely, that conflict are adjust in the process of purchasing development lot, confering with municipality, confering with inhabitants and so on.The change of the ratio of the profits (A: confering with municipality (γ=7%), B: confering with inhabitants (γ=7%), C: confering with inhabitants (γ=5.5%, 7%, 8%)) are simulated using the Model.It was found that the most important factores which determins ratio of the profits in the Model are the rate of interest and the selling price of housing lost. More, the maximum rate of the profits was recognized on the 3 to 5 iterations, and it was independent of the rate of interest.It is concluded from the results of simulation that the Conflict-Management Model is useful to examine the optimal process of development of the suburban residential area under environmental conditions.
日本地域学会の論文

住宅地開発と環境整備の調整原理

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