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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

本研究的成果概述如下。后藤内海沿海地区发展历程的历史回顾与现代课题：该地区的土地和水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。如今，它已经开始重新安排使用制度。用水系统调整：随着非农业经济活动的显著增加，需要对过去修建的农业用水系统和水渠系统进行重新调整。为完善该系统，开展了国家定向灌溉工程。研究结果表明，水资源利用效率下降，出现了新的用水需求。海水集约利用、填海造地和排水基础设施的改善--在填海…中过去更多的农用地用于农业生产，现在正在进行土地集约利用，即城市化或农用地综合利用的改善。径流特征发生变化，防洪安全水平显著下降。显然，城乡区域排水设施，泵站和排水渠，都是由土地改良机构来改进的，其目的和技术内容正在从传统的农业排水发生变化。土地改良机构在该地区发展中的作用和未来主体：重新安排该地区的土地和水利用制度将成为首要问题。得出的结论是，这一安排应主要作为国家级土地整治项目来进行。指出在改善沿海地区的同时，改善作为上游降雨集水区的后山地区是十分重要的。较少