Abstract
This study focuses on future forest cover change in Buzau Subcarpathians, a landslide prone region in Romania. Past and current trends suggest that the area might expect a future increase in deforestation. We developed spatially explicit scenarios until 2040 to analyze the spatial pattern of future forest cover change and potential changes to landslide risk. First, we generated transition probability maps using the weights of evidence method, followed by a cellular automata allocation model. We performed expert interviews, to develop two future forest management scenarios. The Alternative scenario (ALT) was defined by 67 % more deforestation than the Business as Usual scenario (BAU). We integrated the simulated scenarios with a landslide susceptibility map. In both scenarios, most of deforestation was projected in areas where landslides are less likely to occur. Still, 483 (ALT) and 276 (BAU) ha of deforestation were projected on areas with a high-landslide occurrence likelihood. Thus, deforestation could lead to a local-scale increase in landslide risk, in particular near or adjacent to forestry roads. The parallel process of near 10 % forest expansion until 2040 was projected to occur mostly on areas with high-landslide susceptibility. On a regional scale, forest expansion could so result in improved slope stability. We modeled two additional scenarios with an implemented landslide risk policy, excluding high-risk zones. The reduction of deforestation on high-risk areas was achieved without a drastic decrease in the accessibility of the areas. Together with forest expansion, it could therefore be used as a risk reduction strategy.
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Acknowledgments
This work is a part of the CHANGES project (Changing hydro-meteorological risks—as Analysed by a New Generation of European Scientists), a Marie Curie Initial Training Network, funded by the European Community’s 7th Framework Programme FP7/2007-2013 under Grant Agreement No. 263953. The authors would also like to thank Roxana Ciurean, Veronica Zumpano, and Mihai Micu for their extensive help.
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Malek, Ž., Boerboom, L. & Glade, T. Future Forest Cover Change Scenarios with Implications for Landslide Risk: An Example from Buzau Subcarpathians, Romania. Environmental Management 56, 1228–1243 (2015). https://doi.org/10.1007/s00267-015-0577-y
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DOI: https://doi.org/10.1007/s00267-015-0577-y