COMPREHENSIVE STUDY ON DEVELOPMENT TREND AND LAND USE PLANNING IN A LOCAL CITY AFTER ABOLISHING URBANIZATION CONTROLAREA

采用GIS和问卷调查相结合的方法，对宫古诺市1988年取消城市化控制区后1995-2004年的发展趋势和取消城市化控制区居民的意识进行了调查。结果如下：(1) 2002年以来，非城市化促进区开发数量减少，非城市化控制区开发数量增加。2)降低容积率至200%对于控制非城市化控制区的发展不起作用。3)大部分住宅和商业发展项目位于使用区的边缘地区。4)《城市规划法》第42条允许的超过1000平方米²的发展相对较低，仅占所有发展的14%。(5) 2005年，非城市化控制区的几个地区被内水淹没。(6)研究结果表明，城市化的取消促进了城市化控制区的发展，但同时也带来了一些与洪水灾害有关的问题。研究结果为土地综合利用规划提供了参考。7)城市总体规划对土地利用管理的重要性日益凸显。8)需要评估发展扩散对城市管理的负面影响。9)加强城市规划区和农业用地的开发许可手续。10)地方政府应解释城市规划和土地利用规划制度的目的，以及开发带来的灾害风险向市民扩散。11)中央和地方政府应在公私土地交易中建立知情同意制度/程序。

The development trends during 1995-2004 in Miyakonojo city after the abolishment of urbanization control area in 1988 and consciousness of the people who live in ex-urbanization control area were investigated by using GIS and questionnaire surveys. The results are as follows. 1) The number of the developments in ex-urbanization promotion area decreased whereas the number in ex-urbanization control area increased from 2002. 2) The Down-zoning to 200% of floor-area ratio did not work for the control of developments in ex-urbanization control area. 3) Most residential and commercial developments were located in the fringe regions of use district. 4) The developments more than 1000m^2 permitted by the Article 42 of City Planning Law were relatively low at 14% of all developments. 5) Several districts in the ex-urbanization control area were developed and inundated by inside water in 2005. 6) These results show that the abolishment promoted the developments, and then, caused some problems concerned with flood disaster in the ex-urbanization control area.The results give us some information about comprehensive land use planning. 7) City Master Plan becomes more important for land use management. 8) It is needed to evaluate the negative effects of the development spread on city management. 9) The development permission procedures in city planning area and agricultural fields should be consolidated. 10) Local governments should explain the purposes of city planning and land use planning systems, and disaster risks caused by development spread to citizens. 11) Central and local governments should establish an informed-consent system/procedure in public/private dealing of land.