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2017-03-02Zeitschriftenartikel DOI: 10.18452/18737
Scenarios of land-use change in a deforestation corridor in the Brazilian Amazon: combining two scales of analysis
Gollnow, Florian
Göpel, Jan
de Barros Vivana Hissa, Letícia
Schaldach, Rüdiger
Lakes, Tobia
Mathematisch-Naturwissenschaftliche Fakultät
Local, regional, and global processes affect deforestation and land-use changes in the Brazilian Amazon. Characteristics are: direct conversions from forest to pasture; regional processes of indirect land-use change, described by the conversion of pastures to cropland, which increases the demand for pastures elsewhere; and teleconnections, fueled by the global demands for soybeans as animal fodder. We modeled land-use changes for two scenarios Trend and Sustainable Development for a hot spot of land-use change along the BR-163 highway in Mato Grosso and Para´, Brazil. We investigated the differences between a coupled modeling approach, which incorporates indirect land-use change processes, and a noncoupled landuse model. We coupled the regional-scale LandSHIFT model, defined for Mato Grosso and Para´, with a subregional model, alucR, covering a selected corridor along the BR-163. The results indicated distinct land-use scenario outcomes from the coupled modeling approach and the subregional model quantification. We found the highest deforestation estimates returned from the subregional quantification of the Trend scenario. This originated from the strong local dynamics of past deforestation and landuse changes. Land-use changes exceeded the demands estimated at regional scale. We observed the lowest deforestation estimates at the subregional quantification of the Sustainable Development story line. We highlight that model coupling increased the representation of scenario outcomes at fine resolution while providing consistency across scales. However, distinct local dynamics were explicitly captured at subregional scale. The scenario result pinpoints the importance of policies to aim at the cattle ranching sector, to increase land tenure registration and enforcement of environmental laws.
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DOI
10.18452/18737
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https://doi.org/10.18452/18737
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