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REARRANGEMENT OF LAND AND WATER UTILIZATION IN RECLAIMED LAND (THE COASTAL AREA IN THE INLAND SEA OF SETO)

填海造地（濑户内海沿岸地区）土地和水资源利用的重新整理

基本信息

批准号：
62560234
负责人：
MITSUNO Toru
金额：
$ 1.47万
依托单位：
Okayama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1989
项目状态：
已结题

项目摘要

Results from this research are outlined as follows.1. The historical review of developing process of the coastal area in the Inland Sea of Seto and modern subjects of this area: There are three stages in land and water resources development in this area. The historical trace of those stages remains in the modern utilization of land and water. Today it has already started to rearrange the utilization system.2. Rearrangement of the water use system: As economical activity in non-agriculture sector remarkably raises in the area today, it is necessary to rearrange the water use system and the canal system constructed in the past for agriculture. The national oriented irrigation project is undertaken to improve the system. As its results, it is clear by this investigation that the efficiency of water utilization decreases and the new water demand occurs by this rearrangement.3. The intensive use in sea water reclaimed land and the improvement of infra-structures for drainage: In the reclaim … More ed land for agricultural production in the past, the intensive land use, that is, urbanization or improvement for multi-purpose agricultural land use is progressed in the present. The runoff characteristics change and the safety level against flood damage remarkably goes down. It is clear that the regional drainage facilities for both of the rural and urban area, pump station and drainage canal, are used to be improved by the land improvement institution, and its purpose and technical contents are changing from the conventional agricultural drainage.4. The role of the land improvement institution and the future subject in the development of the area: It will become the most important problem to rearrange the land and water utilization system in this area. It is concluded that this arrangement should be undertaken mainly as the national oriented land improvement project. It is also pointed out that it is important to improve the behind mountainous area, which is a catchment area of rainfall in the upstream, at the same time of improvement for the coastal area. Less

本研究的结果概述如下： 1．濑户内海沿岸地区开发历程的历史回顾及该地区的现代课题：该地区的水土资源开发经历了三个阶段。这些阶段的历史痕迹仍然存在于现代土地和水的利用中。目前已开始重新调整利用体系。 2．用水系统的重新安排：由于当今该地区非农业部门的经济活动显着增加，有必要重新安排用水系统和过去为农业而修建的运河系统。实施国家定向灌溉工程，完善体系。调查结果表明，这种重新安排导致了水的利用效率下降，并产生了新的需水量。3．海水填海地的集约利用和排水基础设施的完善：过去的填海造地用于农业生产，现在正在进行土地集约利用，即城市化或农业用地综合利用的改善。径流特征发生变化，防洪安全水平明显下降。显然，农村和城市的区域排水设施，泵站和排水渠，都是由土地改良机构改造的，其目的和技术内容正在改变传统的农业排水。 4．土地整治制度在该地区发展中的作用及未来主体：重新整理该地区的土地和水利用体系将成为首要问题。结论认为，这一安排应主要作为国家导向的土地整治工程来实施。还指出，在做好沿海地区整治的同时，还要做好上游降雨集水区的后山地区的整治。较少的