Target Regions for Silvoarable Agroforestry in Europe. Reisner, Y., de Filippi, R., Herzog, F., & Palma, J. 29(4):401–418.
Target Regions for Silvoarable Agroforestry in Europe [link]Paper  doi  abstract   bibtex   
Silvoarable agroforestry (SAF) has recently been proposed as an alternative land-use system for Europe. Data on soil, climate, topography, and land cover were integrated in a geographic information system (GIS) to identify agroforestry target regions where (i) productive growth of trees (Juglans spp., Prunus avium, Populus spp., Pinus pinea, and Quercus ilex) in SAF systems could be expected and where (ii) SAF systems could potentially reduce the risk of soil erosion, nitrate leaching and increase landscape diversity. [\n] The analysis shows that the investigated tree species could grow productively in SAF systems on 56\,% of the arable land throughout Europe (potential productive tree growth area). 80\,% of the European arable land was classified as potential risk area for soil erosion, nitrate leaching, and/or landscape diversity. Overlaying potential productive tree growth areas with the arable land that was considered as environmental risk area yielded target regions. They were found to make up about 40\,% of the European arable land and thus SAF could contribute to soil protection on 4\,%, to mitigate nitrate leaching on 18\,% and to increase landscape diversity on 32\,% of European arable land. [Excerpt: Conclusions and outlook] The potential growth area of the five selected tree species covers large parts of temperate Europe (Juglans spp., P. avium, Populus spp.) and of Mediterranean Europe (Populus spp., P. pinea, Q. ilex). On about 906,887 km2, at least one of the selected tree species can grow ( Table 3). With 56\,% of the European arable land, the proportion of arable land where agroforestry could be implemented and productive tree growth expected is rather high. [\n] The environmental impact of arable agriculture in Europe is considerable. 5\,% of the arable land has a high risk for soil erosion, 52\,% was classified as a nitrate vulnerable zone, and 66\,% was assessed to have low landscape diversity (note the different reference areas as described in Section 3.3). We estimated that on 1.30 × 106 km2 (80\,% of the total European arable land) at least one of the three environmental risks existed (Table 4). [\n] The target regions cover 652,185 km2 which relates to approximately 40\,% of the arable land in Europe (Table 3). The study shows that productive growth of the investigated tree species can be expected throughout all climatic zones from north to south and from east to west. The development and introduction of new agroforestry techniques could contribute to the reduction of environmental risks on a considerable amount of the European arable land area. [\n] If further tree species were taken into account, the target area for silvoarable agroforestry systems would increase. Notably coniferous species would need to be investigated for the boreal zone. [\n] Our results indicate that silvoarable agroforestry systems deserve public support to at least the same extent as conventional agricultural and forestry production. Presently, as the European agricultural policy is revised and cross-compliance requirements are introduced, it is as yet unclear as to which degree member states will formulate regulations that favour the maintenance and even establishment of trees in agricultural landscapes. Our results demonstrate the potential of agroforestry at the continental scale. Further research should be conducted at higher spatial and thematic resolutions, taking into account the characteristics of individual landscapes in order to more precisely identify target regions for agroforestry. Specific recommendations could then be elaborated to eventually encourage the establishment of agroforestry in locations, where it is feasible and where it can contribute to resolve an environmental problem.
@article{reisnerTargetRegionsSilvoarable2007,
  title = {Target Regions for Silvoarable Agroforestry in {{Europe}}},
  author = {Reisner, Y. and de Filippi, R. and Herzog, F. and Palma, J.},
  date = {2007-04},
  journaltitle = {Ecological Engineering},
  volume = {29},
  pages = {401--418},
  issn = {0925-8574},
  doi = {10.1016/j.ecoleng.2006.09.020},
  url = {https://doi.org/10.1016/j.ecoleng.2006.09.020},
  abstract = {Silvoarable agroforestry (SAF) has recently been proposed as an alternative land-use system for Europe. Data on soil, climate, topography, and land cover were integrated in a geographic information system (GIS) to identify agroforestry target regions where (i) productive growth of trees (Juglans spp., Prunus avium, Populus spp., Pinus pinea, and Quercus ilex) in SAF systems could be expected and where (ii) SAF systems could potentially reduce the risk of soil erosion, nitrate leaching and increase landscape diversity.

[\textbackslash n] The analysis shows that the investigated tree species could grow productively in SAF systems on 56\,\% of the arable land throughout Europe (potential productive tree growth area). 80\,\% of the European arable land was classified as potential risk area for soil erosion, nitrate leaching, and/or landscape diversity. Overlaying potential productive tree growth areas with the arable land that was considered as environmental risk area yielded target regions. They were found to make up about 40\,\% of the European arable land and thus SAF could contribute to soil protection on 4\,\%, to mitigate nitrate leaching on 18\,\% and to increase landscape diversity on 32\,\% of European arable land.

[Excerpt: Conclusions and outlook]

The potential growth area of the five selected tree species covers large parts of temperate Europe (Juglans spp., P. avium, Populus spp.) and of Mediterranean Europe (Populus spp., P. pinea, Q. ilex). On about 906,887 km2, at least one of the selected tree species can grow ( Table 3). With 56\,\% of the European arable land, the proportion of arable land where agroforestry could be implemented and productive tree growth expected is rather high.

[\textbackslash n] The environmental impact of arable agriculture in Europe is considerable. 5\,\% of the arable land has a high risk for soil erosion, 52\,\% was classified as a nitrate vulnerable zone, and 66\,\% was assessed to have low landscape diversity (note the different reference areas as described in Section 3.3). We estimated that on 1.30 × 106 km2 (80\,\% of the total European arable land) at least one of the three environmental risks existed (Table 4).

[\textbackslash n] The target regions cover 652,185 km2 which relates to approximately 40\,\% of the arable land in Europe (Table 3). The study shows that productive growth of the investigated tree species can be expected throughout all climatic zones from north to south and from east to west. The development and introduction of new agroforestry techniques could contribute to the reduction of environmental risks on a considerable amount of the European arable land area.

[\textbackslash n] If further tree species were taken into account, the target area for silvoarable agroforestry systems would increase. Notably coniferous species would need to be investigated for the boreal zone.

[\textbackslash n] Our results indicate that silvoarable agroforestry systems deserve public support to at least the same extent as conventional agricultural and forestry production. Presently, as the European agricultural policy is revised and cross-compliance requirements are introduced, it is as yet unclear as to which degree member states will formulate regulations that favour the maintenance and even establishment of trees in agricultural landscapes. Our results demonstrate the potential of agroforestry at the continental scale. Further research should be conducted at higher spatial and thematic resolutions, taking into account the characteristics of individual landscapes in order to more precisely identify target regions for agroforestry. Specific recommendations could then be elaborated to eventually encourage the establishment of agroforestry in locations, where it is feasible and where it can contribute to resolve an environmental problem.},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13780119,~to-add-doi-URL,agroforestry,europe,forest-resources,juglans-spp,pinus-pinea,populus-spp,prunus-avium,quercus-ilex,soil-erosion,soil-resources},
  number = {4},
  options = {useprefix=true}
}

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