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Table 2 Exports of biomass and nutrients from eucalyptus stands under different harvest scenarios

From: The potential of Eucalyptus plantations to restore degraded soils in semi-arid Morocco (NW Africa)

  Biomass N P K Ca Mg
a. Biomass (Mg ha−1) and mineral mass (kg ha−1)
 S (S1) 143 246 55 660 775 68
 SR100 (S2) 188 601 99 934 1420 144
 SB (S3) 162 299 63 718 1543 120
 SBR80 (S4) 198 582 98 938 2059 181
 SBR100 (S5) 207 653 107 993 2188 196
b. Biomass and mineral mass (% of standing stocks)
 S (S1) 69 38 51 66 35 35
 SR100 (S2) 91 92 93 94 65 73
 SB (S3) 78 46 59 72 71 61
 SBR80 (S4) 96 89 92 94 94 92
 SBR100 (S5) 100 100 100 100 100 100
c. Nutrient stocks in soil for the eucalyptus stands before biomass harvest (kg ha−1; 0–100 cm soil layer)
 Euca-P1   1665 80 219 1771 411
 Euca-C2   2195 119 288 2112 439
 Euca-C3   2869 167 271 2287 619
 Euca-C4   3195 162 305 2524 713
  1. Eucalyptus stands: four rotations of 12 years (one plantation, followed by three coppiced stands)
  2. Euca-P1 eucalyptus plantation, Euca-C2, Euca-C3, and Euca-C4 coppiced eucalyptus stands (2nd, 3rd, and 4th rotations), S stem wood (stems with circumference at breast height > 7 cm) harvested, B stem bark harvested, R80 and R100 80 or 100% of harvesting residues exported