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Title

Short and intermediate-term effect of site and plants techniques on reforestation of a Mediterranean semiarid ecosystem with Pinus halepensis Mill.

AuthorsGonzález Barberá, Gonzalo CSIC ORCID; Martínez-Fernández, Faustino; Álvarez-Rogel, José; Albaladejo Montoro, Juan; Castillo Sánchez, Victor Manuel
KeywordsHole
Nutrient supply
Organic amendment
Planting
SE Spain
Sheltering tubes
Subsoiling
Issue DateMar-2005
PublisherSpringer
CitationNew Forest 29(2): 177-198 (2005)
AbstractA 5-year study of the reforestation of a semiarid Mediterranean ecosystem with Pinus halepensis is presented. Reforestation of Mediterranean semiarid ecosystems is challenging as a result of harsh environmental conditions and historical human exploitation leading to degradation. New techniques have to be developed in order to increase survivorship and growth that integrates nursery and field treatments. A total of 60 treatments resulting from 12 site × 5 plant preparation techniques were tested. Plant preparation consists of mycorrhizing in nursery, extra fertilizing in nursery, planting in containers in the nursery, planting in the field with a polypropylene tube, and control plants (bred in plastic bags). Soil preparation consists of hole, subsoiling without amendment, subsoiling with composted organic amendment added in the surface or in the furrow of plantation and subsoiling with fresh organic amendment added in the surface or in the furrow of plantation. Each one of these treatments was tested with a hydrophilic acrylic copolymer and without it. Survivorship was very high (0.91) given the prevailing environmental conditions. Subsoiling promoted higher survival than holes, and plants bred in containers had lower levels of survivorship than control ones. Protecting seedlings with polypropylene tubes had no effect on survivorship. The most effective treatment for promoting growth was organic amendment, the effect of which increased until the fourth year. Protection with tubes was very effective in increasing height, although only in the short-term. Subsoiling also promoted faster growth than holes, although the effect was less noticeable after 3 years and was, in any case, less effective than organic amendment. Other treatments promoting faster growth were the use of fresh organic waste as opposed to composted waste and its incorporation in the plantation furrow rather than as a layer on the surface. The addition of hydrophilic acrylic copolymer reduced growth during the first months of the reforestation. The fertilization of plants in the nursery and inoculation with spores of mycorhyzal fungi did not improve seedling growth. Plants bred in containers performed worse than control plants bred in individual plastic bags. The findings suggests the importance of nutrient supply in semiarid environments, an aspect that has been previously neglected in favor of water supply. Organic amendments reinforce both and can be recommended as long as adequate environmental controls are in place.
Publisher version (URL)http://dx.doi.org/10.1007/s11056-005-0248-6
URIhttp://hdl.handle.net/10261/16511
DOI10.1007/s11056-005-0248-6
ISSN0169-4286
E-ISSN1573-5095
Appears in Collections:(CEBAS) Artículos

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