Annals of Forest Science

, 74:57

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

  • Mohamed Boulmane
  • Hayat Oubrahim
  • Mohammed Halim
  • Mark R. Bakker
  • Laurent Augusto
Original Paper

Abstract

Key message

Short-rotation forestry using eucalyptus in degraded oak forests in the semi-arid area of NW Morocco can be a useful strategy to avoid further degradation and carbon loss from this ecosystem, but it might be constrained by nutrient and water supply in the long term.

Context

Land degradation and deforestation of natural forests are serious issues worldwide, potentially leading to altered land use and carbon storage capacity.

Aims

Our objectives were to investigate if short-rotation plantations can restore carbon pools of degraded soils, without altering soil fertility.

Methods

Carbon and nutrient pools in above- and below-ground biomass and soils were assessed using stand inventories, harvested biomass values, allometric relationships and selective sampling for chemical analyses.

Results

Carbon pools in the total ecosystem were low in the degraded land and in croplands (6–13 Mg ha−1) and high in forests (66–94 in eucalyptus plantations; 86–126 in native forests). The soil nutrient status of eucalyptus stands was intermediate between degraded land and native forests and increased over time after eucalyptus introduction. All harvest scenarios for eucalyptus are likely to impoverish the soil but, for the moment, the soil nutrient status has not been affected.

Conclusion

Afforestation of degraded land with eucalyptus can be a useful restoration tool relative to carbon storage and soil fertility, provided that non-intensive forestry is applied.

Keywords

Afforestation Carbon pools Soil nutrients Cork oak Eucalyptus 

Supplementary material

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Copyright information

© INRA and Springer-Verlag France SAS 2017

Authors and Affiliations

  1. 1.Laboratoire de PédologieCentre de Recherche ForestièreRabatMorocco
  2. 2.Faculté des SciencesUniversité Mohammed V AgdalRabatMorocco
  3. 3.Bordeaux Sciences AgroINRA, UMR 1391 ISPAGradignanFrance

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