知识与财富的链接
运用GIS软件ARC/INFO、ArcView,以九龙江流域为例,探讨了数字高程模型（DEM）的处理及其水文模拟分析。对九龙江流域分幅数字高程模型（DEM）进行图幅拼接、网格重分及切割等处理分析,生成九龙江流域数字高程模型。基于DEM和GIS,进行流域的水文模拟分析,包括洼地填充、水流方向计算、水流累积量计算、水网提取,最后进行了九龙江全流域及子流域界线的划分,生成了数字流域。
The treatment and hydrology simulation analysis of digital elevation model (DEM) are discussed using ARC/INFO and ArcView of GIS software with an example of the Jiulong River Basin. The digital elevation model of the Jiulong River Basin is generated through map mosaic, grid re-division, and separation of all the DEM maps of the Jiulong River Basin. The hydrological simulation is conducted based on DEM and GIS, for the major processes of lowland water infilling, calculation of water flow direction and water flow accumulation, and water network layout. Finally the digital basin is generated through separations of the whole basin and the sub-basins of the Jiulong Basin.
