A ten years analysis of Quercus suber L. afforestation projects in the ...

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Table 1 Variables and coding Code Previous Land Soil Soil Altimetry Site Seedlings Animal Cover type depth level Species Composition preparation protection damage 1 OO Sa S B Pp P MCRB N N 2 NIA Sc M sM Pn M MCS Y Y 3 NG Gr D M Qs MCB 4 5 6 F Sa – sandstone Sc – schist Gr – granite Qr B QsQr P – pure N – mixed MCHP NCT RP Y – yes N – no 7 8 9 OG – olive groves NIA – non-irrigated arable land NG – natural grassland F – forests S – superficial M – medium D – deep QSPp/PnQs Cristina Alegria 2012 IUFRO – All D5 Conference Forest Products, 8-13 July 2012, Estoril, Portugal 8 PnQr BB/PpQ B - basal (0-400 m) sM – sub-montane (400-700 m) M – montane (700-1000 m) RB S MCRB – mechanical clearing, ripping and bedding MCS – mechanical clearing and subsoiling MCB – mechanical clearing and bedding MCPH – manual clearing and planting holes NCT – non-commercial thinning RP – ripping and plowing RB – ripping and bedding S – subsoiling
Methodology Field samples - project status • Regular • Irregular - Lack of minimum stand density - Deficiencies meeting management plan goals Principal Components Analysis (PCA) was used to find out, which variables were the most important on explaining: - afforestation success (samples with regular status) and - afforestation success failure (samples with irregular status due to lack of minimum stand density) and how these variables were correlated. Cristina Alegria 2012 IUFRO – All D5 Conference Forest Products, 8-13 July 2012, Estoril, Portugal 9
Page 1 and 2: A ten years analysis of Quercus sub
Page 3 and 4: Methods Study area Mediterranean re
Page 5 and 6: Pp Pn Qs Qr B PpQ PnQs PnQr QsQr Qs
Page 7: Information It was collected inform
Page 11 and 12: Table 2 Afforestation projects Prev
Page 13 and 14: Area (ha) Pp Pn Qr Qs B PpQ PnQs Pn
Page 15 and 16: Code Site Animal Code Seedlings pre
Page 17 and 18: Fig. 9 PCA - Field samples with irr
Page 19 and 20: Discussion • Projects with regula

A ten years analysis of Quercus suber L. afforestation projects in the ...

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