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31.
Throughout Europe the demands for improved flood protection on the one hand and the requirements to maintain and enhance floodplain forests on the other are perceived as conflicting goals in river-basin management, revealing the urgent need for strategies to combine both issues. We developed an interdisciplinary approach for floodplain-forest restoration identifying sites suitable for reforestations from both an ecological and hydraulic point of view. In the ecological module, habitat-distribution models are developed providing information on ecologically suitable sites. In the hydraulic module, a two-dimensional hydrodynamic-numerical model (2D-HN model) delivers the requested hydraulic information. The output of the two models is intersected. Subsequently, in an iterative procedure, the potential of plantings without exceeding critical water levels can be identified by hydraulic evaluation using the 2D-HN-model. The approach is exemplified using two reforestation scenarios at the Elbe River, Germany, showing considerable potential for softwood forest establishment without negative hydraulic effects. The approach reported here provides a solution for a severe conflict in river-basin management that hampers the reestablishment of the strongly threatened floodplain forests in Europe. Alternative measures to enhance floodplain-forest regeneration feasible under certain preconditions are discussed in the context of the current state of European large rivers. 相似文献
32.
Stine Aakre Ilona Banaszak Reinhard Mechler Dirk Rübbelke Anita Wreford Harvir Kalirai 《Mitigation and Adaptation Strategies for Global Change》2010,15(7):721-736
Increasing losses from weather related extreme events coupled with limited coping capacity suggest a need for strong adaptation
commitments, of which public sector responses to adjustments to actual and expected climate stimuli are key. The European
Commission has started to address this need in the emerging European Union (EU) climate adaptation strategy; yet, a specific
rationale for adaptation interventions has not clearly been identified, and the economic case for adaptation to extremes remains
vague. Basing the diagnosis on economic welfare theory and an empirical analysis of the current EU and member states’ roles
in managing disaster risk, we discuss how and where the public sector may intervene for managing climate variability and change.
We restrict our analysis to financial disaster management, a domain of adaptation intervention, which is of key concern for
the EU adaptation strategy. We analyse three areas of public sector interventions, supporting national insurance systems,
providing compensation to the affected post event as well as intergovernmental loss sharing through the EU solidarity fund,
according to the three government functions of allocation, distribution, and stabilization suggested by welfare theory, and
suggest room for improvement. 相似文献