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科学合理地划定水源地的保护范围是一项技术含量较高的工作。以厦门市饮用水源中的北溪引水渠 (管道 )和坂头水库为例 ,根据饮用水源保护区划分原则 ,研究基于数字化的地形图建立数字高程模型并自动生成汇水区盆地和流域范围的 GIS技术、获取相关自然环境专题信息的遥感技术、以及综合利用社会和自然等多种数据源进行保护区范围界定的方法。重点探讨数字高程模型的建立以及汇水区盆地和流域边界自动生成的 GIS方法。
Scientifically and rationally delineating the scope of protection of water sources is a highly technical work. Taking Beixi Diversion Canal (Pipeline) and Bantiau Reservoir in drinking water source of Xiamen as an example, this paper studies the establishment of digital elevation model based on digitized topographic map and the automatic generation of catchment basins and watersheds Range GIS technology, remote sensing technology to obtain thematic information related to the natural environment, and the method of comprehensively utilizing various data sources such as society and nature to define the scope of the nature reserve. It focuses on the establishment of digital elevation model and GIS method of automatic generation of catchment basin and catchment boundary.