基于山脊线的河流沿岸一重山划定方法研究

Research on the first Mountain Delimitation Method along the River Bank Based on Ridge Line

以DEM为数据源,利用水文分析方法完成山脊线提取。依据乡镇防汛指挥图底图数据库等已有河流数据,获取第一次全国水利普查的干流、一级支流数据。依据山脊线的形态特征和地形地貌数据,开展重点流域划分、河流沿岸一重山划定,并利用地形三维可视化模型对一重山划定结果进行准确性验证。结果表明,基于山脊线的河流沿岸一重山划定方法可行,可为福建省重点流域矿产资源监督和管理提供数据支撑。

Taking DEM data as data source,we extracted the ridge line based on hydrological analysis.We obtained the main stream and first-lev-el tributaries of the first national water conservancy census from the existing river data such as the command map data of township flood preven-tion.According to the ridge line pattern and geomorphological data,we performed the division of key watersheds and the delineation of the first mountain along the river bank.Finally,we verified the accuracy of delineation results based on the terrain 3D visualization model.The verifica-tion result shows the first mountain delimitation method along the river bank is supported.In a word,the study will be helpful for the supervision and management of mineral resources.