科研之友
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摘要
This study aimed to identify trends change in natural pathways of urban runoff and of the water volumes into a highly urbanized area of city Bordeaux, France. The identification of the city's flow paths on urbanized terrain and natural land surface based on Digital Terrain Model and Digital Surface Model, highlighted how the natural pathways of the runoff were been modified by successive buildings and other barriers of the urbanized ground surface. On the base of Landsat images, the Total Impervious Area for 1984, 1991, 2002 and 2014 were extracted and the Effective Impervious Areas were calculated. The tendency of the runoff for the period 1984-2014, for a sub-watershed of Bordeaux, was demonstrated through the HEC-HSM hydrologic modeling. The results highlighted the modification of natural paths in the studied area, and a tendency to increase the volume of water runoff. These trends are the result of urbanization and industrialization and require the implementation of mitigation measures in the future.
- 出版日期2016-10
