Ecofunctional traits and biomass production in leguminous tree species under fertilization treatments during forest restoration in Amazonia

• Autor(a) principal: Jaquetti, Roberto Kirmayr
• Data de Publicação: 2016
• Outros Autores: Gonçalves, José Francisco Carvalho de, Ferraz, João Baptista Silva, Ferreira, Marciel José, Santos Junior, Ulysses Moreira dos
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional do INPA
• Texto Completo: https://repositorio.inpa.gov.br/handle/1/15847
• topic: Biomass; Conservation; Efficiency; Forestry; Hydroelectric Power Plants; Nutrients; Photosynthesis; Restoration; Biomass Productions; Degraded Area; Dipteryx Odorata; Inga Edulis; Nutrient-use Efficiencies; Organic Fertilization; Post-planting Fertilization; Schizolobium Amazonicum; Ecology; Biomass; Fertilizer Application; Forest Dynamics; Forest Management; Growth Response; Legume; Nutrient Use Efficiency; Photosynthesis; Restoration Ecology; Amazonia; Brasil; Dipteryx Odorata; Inga Edulis; Schizolobium Amazonicum

Background: Choosing the correct species and fertilization treatments is a determining factor in the success of forest restoration. Methods: A field study was conducted in a degraded area near the Balbina hydroelectric dam in Amazonas State (AM), Brazil, to evaluate two hypotheses: (i) leguminous tree species exhibit differences in growth, leaf nutrient content, and photosynthetic nutrient use efficiencies; and (ii) differences in these characteristics depend on the fertilization treatments to which the species have been subjected. Dipteryx odorata, Inga edulis and Schizolobium amazonicum were subjected to the following treatments: (T1) unfertilized control; (T2) post-planting chemical fertilization; (T3) post-planting organic fertilization and (T4) combined chemical and organic post-planting fertilization. Results: In general, I. edulis had the highest absolute growth rate of biomass under all of the fertilization treatments. I. edulis and S. amazonicum showed the highest growth rates under the T4 treatment. D. odorata showed the greatest responses under the T2 and T4 treatments. Native leguminous trees with higher photosynthetic performance and better nutrient use efficiency exhibited greater growth and biomass production. Conclusion: The results suggest that an adequate balance between leguminous species selection and fertilization will aid in the success of forest restoration in Amazonia. © 2016 by the authors.