水源保护区划界的遥感与GIS技术研究

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。

Study of Remote Sensing and GIS Technology on the Delimitation of Water Resource Protection Area

It is an engineering-oriented work to delimit the water resource protection area scientifically and reasonably. According to the drinking water resource protection principle, with the water resource area of Beixi Aqueduct and Bantou Reservoir in Xiamen as an example, the GIS technology of creating basin and watershed automatically based on the foundation of Digital Elevation Model (DEM) from topography, the remote sensing technology of acquiring natural ecological environmental information, and the GIS analytic method of delimiting water resource protective scope making use of various data, including social and natural data, are studied in this paper. The focus is on the discussion of GIS methodology of obtaining boundary of basin and watershed automatically based on the creation of DEM from topography. The required natural ecological information for delimiting water resource protective area from remote\|sensing are also discussed and the puzzle in which is analyzed. However, applying remote\|sensing and GIS technology to delimit water protective is a kind of more scientific method to be performed than ever before and its result is credible.