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Modeling Riparian Zones Utilizing DEMS and Flood Height Data
Ist Teil von
Photogrammetric engineering and remote sensing, 2012-03, Vol.78 (3), p.259-269
Ort / Verlag
Bethesda, MD: American Society for Photogrammetry and Remote Sensing
Erscheinungsjahr
2012
Link zum Volltext
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
Riparian ecotones are unique, diverse networks of vegetation and soils in close proximity to streams, rivers, and lakes. Previous approaches to riparian boundary delineation utilized fixed width buffers, but using a fixed width riparian buffer only takes the watercourse into consideration;
it does not consider the surrounding landscape. By hydrologically defining a riparian ecotone to occur at the 50-year flood height and incorporating digital elevation data, the spatial modeling capabilities of ArcMap® GIS are utilized to map riparian zones accurately. This approach
better characterizes the watercourse and its associated floodplain. Riparian zones delineated using 10 versus 30 meter DEMs and stream course information from the National Hydrography Dataset differ significantly. Within our study areas, 30 meter DEMs are not adequate to map elevation changes
for accurate riparian area delineation. The result is a robust GIS based model in an ArcMap® Toolbox format to delineate a variable-width riparian boundary.