基于三维地形优化的水源保护区划定研究

Study on the Delineation of Water Source Protection Area Based on 3D Terrain Optimization

为保护和合理利用水资源,因地制宜划定饮用水水源保护区,本研究基于三维地形提取水流量和分水岭,优化类比经验法、地形边界法、缓冲区法等传统方法,构建了符合南方丘陵区地形破碎特点的饮用水水源保护区划定方法。并以湖南省武冈市为例开展实证研究,研究结果表明基于三维地形优化的方法可行,结果可靠,对比传统方法精度更高。随着实景三维建设与应用技术的提升,本研究的方法优势将扩大,结果更可行。

In order to protect and rationally utilize water resources and delineate drinking water source protection areas according to local conditions,this study extracts water flow and watershed based on 3D terrain,optimizes traditional methods such as analogy experience method,terrain boundary method and buffer zone method,and establishes a delineation method of drinking water source protection area that conforms to the characteristics of terrain fragmentation in the southern hilly region.Taking Wugang city of Hunan province as an example,the results show that the method based on 3D terrain optimization is feasible,reliable and more accurate than the traditional method.With the improvement of 3D construction and application technology,the advantages of the method in this study will be expanded and the results will be more feasible.