期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 628-629, 期 -, 页码 1191-1199出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2018.02.084
关键词
Riverine processes; Water framework directive; Google Earth; Danube; Loire; Elbe
资金
- European Union [603378]
Large rivers cover and function over large spatial extents. Accordingly, the detailed assessment of their morphology is complex. Here, a methodology is presented to assess large rivers' morphology (LaRiMo) based on free datasets of geographic information systems. This approach could help to achieve a comparable, transboundary assessment of large river morphology to support the implementation of the European Water Framework Directive. The analyses are based on seven parameters describing processes and characteristics related to large river morphology. These parameters are evaluated for and compared between the rivers Danube, Elbe and Loire. A significantly higher amount of gravel and sand bars within the river bed strongly supported the overall higher morphological status of the Loire. A PCA highlighted that the parameters Wetlands, Active Riparian Zones and Free Flowing Sections similarly described a good morphological situation. In contrast, Canal, Dams and Impervious Surface indicated bad morphological conditions. Finally, the approach was successfully validated with data from a detailed, field based morphological assessment for the Danube. LaRiMo represents an efficient and cost-effective approach to assess large river morphology across large extents. This method provides comparable results across countries and regions. (C) 2018 Elsevier B.V. All rights reserved.
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