New Forests

, Volume 43, Issue 5–6, pp 561–579 | Cite as

Perspectives in dryland restoration: approaches for climate change adaptation

  • V. Ramón Vallejo
  • Athanasios Smanis
  • Esteban Chirino
  • David Fuentes
  • Alejandro Valdecantos
  • Alberto Vilagrosa
Article

Abstract

Reforestation efforts in dryland ecosystems frequently encounter drought and limited soil productivity, although both factors usually interact synergistically to worsen water stress for outplanted seedlings. Land degradation in drylands (e.g. desertification) usually reduces soil productivity and, especially, soil water availability. In dry sub-humid regions, forest fires constitute a major disturbance affecting ecosystem dynamics and reforestation planning. Climate change projections indicate an increase of drought and more severe fire regime in many dryland regions of the world. In this context, the main target of plantation technology development is to overcome transplant shock and likely adverse periods, and in drylands this is mostly related to water limitations. In this paper, we discuss some selected steps that we consider critical for improving success in outplanting woody plants, both under current and projected climate change conditions including: (1) Plant species selection, (2) Improved nursery techniques, and (3) Improved planting techniques. The number of plant species used in reforestation is increasing rapidly, moving from a reduced set of well-known, easy-to-grow, widely used species, to a large variety of promising native species. Available technologies allow for reintroducing native plants and recovering critical ecosystem functions for many degraded drylands. However, climate change projections introduce large uncertainties about the sustainability of current reforestation practices. To cope with these uncertainties, adaptive restoration approaches are suggested, on the basis of improved plant quality, improved techniques for optimizing rain use efficiency in plantations, and exploring native plant species, including provenances and genotypes, for their resilience to fire and water use efficiency.

Keywords

Mediterranean ecosystems Nursery cultivation Reforestation Species selection Water harvesting 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • V. Ramón Vallejo
    • 1
  • Athanasios Smanis
    • 1
  • Esteban Chirino
    • 1
  • David Fuentes
    • 1
  • Alejandro Valdecantos
    • 1
  • Alberto Vilagrosa
    • 1
  1. 1.Fundación de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterráneo (CEAM)Unidad Mixta de Investigación Universidad de Alicante—Fundación CEAMPaterna, ValenciaSpain

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