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Projeto de investigação
Cork carbon footprint: from trees to products
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Publicações
Descortiçamento do sobreiro: um stress para a árvore ?
Publication . Correia, Alexandra; Silva, João Filipe Costa e; Pereira, João Santos; David, Jorge Soares; Pinto, Clara; David, Teresa Soares; Hernandez, Virginia
Carbon sequestration of modern Quercus suber L. silvoarable agroforestry systems in Portugal: a YeldSAFE-based estimation
Publication . Palma, J.H.N.; Paulo, Joana Amaral; Tomé, Margarida
Modern alley cropping designs, with trees
aligned in rows and adapted to operating farming
machinery, have been suggested for Europe. This paper
explores the potential for adoption of cork oak (Quercus
suber L.) agroforestry in Portugal and estimates the
potential carbon sequestration. Spatial modeling and
Portuguese datasets were used to estimate target areas
where cork oak could grow on farmland. Different
implementation scenarios were then modeled for this
area assuming a modern silvoarable agroforestry system
(113 trees ha-1 thinned at year 20 for establishing
50 trees ha-1). The YieldSAFE process-based model
was used to predict the biomass and carbon yield of cork
oak under low and high soil water holding capacity
levels. Approximately 353,000 ha are available in Portugal
for new cork oak alley cropping. Assuming
implementation rates between 10 % of the area with
low soil water capacity (60 mm: 15 cm depth, coarse
texture) and 70 %of the areawith high soilwater holding
capacity (1,228 mm: 200 cm depth, very fine texture),
then carbon sequestration could be 5 9 106 and
123 9 106 Mg CO2 respectively. Due to higher yields
on more productive land, scenarios of limited implementation in high productivity locations can
sequester similar amounts of carbon as wide implementation
on low productivity land, suggesting that a priori
land classification assessments can improve the targeting
of land and financial incentives for carbon sequestration
Carbon balance estimation for agroforestry land use alternatives in Portugal
Publication . Crous-Duran, J.; Paulo, Joana Amaral; Palma, J.H.N.
In 2005, 11% of the anthropogenic greenhouse gases emissions (GHG) were
originated from agricultural activities and this value is expected to increase in the future (IPCC 2007). Besides the contribution for the restoration of soil productivity and for the improvement of conditions in degraded land, Agroforestry is also proposed as one of the main solutions for the mitigation of the GHG emissions and their effect on Climate Change (IPCC 2007).
With European Union’s legislation supporting and promoting the conversion of
land into low-carbon-integrated agriculture, new opportunities arise for the
implementation of this type of land use in Europe. In Portugal, this type of agriculture is well represented by a traditional Agroforestry system called montado, combining low density cork oak trees (Quercus suber L) with pastoral activities occupying an area of 715,922 ha (AFN, 2010), with recent studies showing an extra area suitable for its implementation of around 353,000ha (Palma et al 2014).
Considering the new policies established by the EU in regard to the measures to
be considered in agriculture for the Climate Change mitigation, and the capacity of the Agroforestry systems to act as a low-carbon and highly productive agriculture, two main objectives are proposed for this work:
1) Compare the potential capacity of the montado to mitigate the GHG
emissions by quantifying the net carbon balance of activities in comparison to two other land-use alternatives occurring in the same area: dense cork oak forestry and wheat monoculture;
2) Quantify the benefits/consequences in terms of net carbon balance if new
areas are converted into Agroforestry systems, as an alternative to current activities and management models.
The methodology for the net carbon balance estimation includes the use of the
Yield-SAFE model (Van der Werf et. al, 2007), calibrated for crop components (Graves et al., 2010) and cork oak (Palma et al., 2014) and current most used management practices concerning the three land use types and associated activities.
Carbon balance estimation for agroforestry land use alternatives in Portugal
Publication . Crous-Duran, J.; Paulo, Joana Amaral; Palma, J.H.N.
In 2005, 11% of the anthropogenic greenhouse gases emissions (GHG) were originated from agricultural activities and this value is expected to increase in the future. Besides the contribution for the restoration of soil productivity and for the improvement of conditions in degraded land, Agroforestry is also proposed as one of the main solutions for the mitigation of the GHG emissions and their effect on Climate Change.
With European Union’s legislation supporting and promoting the conversion of land into low-carbon-integrated agriculture, new opportunities arise for the implementation of this type of land use in Europe. In Portugal, this type of agriculture is well represented by a traditional Agroforestry system called montado, combining low density cork oak trees (Quercus suber L) with pastoral activities occupying an area of 715,922 ha, with recent studies showing an extra area suitable for its implementation of around 353,000ha.
Considering the new policies established by the EU in regard to the measures to be considered in agriculture for the Climate Change mitigation, and the capacity of the Agroforestry systems to act as a low-carbon and highly productive agriculture, two main objectives are proposed for this work: 1) Compare the potential capacity of the montado to mitigate the GHG emissions by quantifying the net carbon balance of activities in comparison to two other land-use alternatives occurring in the same area: dense cork oak forestry and wheat monoculture; 2) Quantify the benefits/consequences in terms of net carbon balance if new areas are converted into Agroforestry systems, as an alternative to current activities and management models. The methodology for the net carbon balance estimation includes the use of the Yield-SAFE model, calibrated for crop components and cork oak and current most used management practices concerning the three land use types and associated activities.
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Entidade financiadora
Fundação para a Ciência e a Tecnologia
Programa de financiamento
5876-PPCDTI
Número da atribuição
PTDC/AGR-FOR/4360/2012