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Comparative Dynamics of Nutrient Release through Litter Decomposition in Eucalyptus grandis Hill ex Maiden and Pinus taeda L. Stands

Forests, 2021-09, Vol.12 (9), p.1227 [Peer Reviewed Journal]

2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 1999-4907 ;EISSN: 1999-4907 ;DOI: 10.3390/f12091227

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  • Title:
    Comparative Dynamics of Nutrient Release through Litter Decomposition in Eucalyptus grandis Hill ex Maiden and Pinus taeda L. Stands
  • Author: Baietto, Andrés ; Hirigoyen, Andrés ; Hernández, Jorge ; del Pino, Amabelia
  • Subjects: afforestation ; Copper ; Decomposition ; Environmental conditions ; Eucalyptus ; Eucalyptus grandis ; Evaluation ; Experiments ; Forests ; Hardwoods ; Immobilization ; Introduced species ; Lignin ; Litter ; litter decomposition ; Manganese ; Nutrient availability ; Nutrient dynamics ; Nutrient loss ; nutrient recycling ; Nutrient release ; Nutrients ; Particle size ; Pasture ; Pine trees ; Pinus taeda ; Polyphenols ; Recycling ; Soil fertility ; Sustainability management ; Sustainable development ; Zinc
  • Is Part Of: Forests, 2021-09, Vol.12 (9), p.1227
  • Description: The installation of commercial stands with exotic forest species on low fertility soils originally covered by native pastures is an unusual situation worldwide. In recent years, the area occupied by forest systems designed for pulp or wood production with immediate replanting has increased strongly in the Pampean region of South America. In this context, the study of nutrient recycling from forest litter decomposition acquires particular relevance. This work seeks to evaluate and compare the nutrient release from the decomposition of forest litter produced by 14-year-old Eucalyptus grandis Hill ex Maiden and Pinus taeda L. stands and test the applicability of a new sampling methodology in the nutrient recycling assessment. For two years, the evaluation of N, P, K, Ca, Mg, Fe, Mn, Cu and Zn dynamics during litter decomposition was carried out. In general, K concentration decreased through decomposition, meanwhile, all other nutrients showed some degree of immobilization, but this was counteracted by biomass loss for most of them. This mainly resulted in net nutrient release from litter. A higher release rate of all nutrients from P. taeda forest litter compared to E. grandis, with the exception of Mn, was verified. Fe immobilization was observed in both species showing a higher immobilization rate in E. grandis compared to P. taeda. Finally, Zn exhibited immobilization processes in E. grandis and releases in P. taeda. This might suggest higher temporal and quantitative availability of nutrients in P. taeda, due their faster return to the soil. These findings could be relevant in the development of models for sustainable management, adapting the demand for nutrients to the supply during forest rotations.
  • Publisher: Basel: MDPI AG
  • Language: English
  • Identifier: ISSN: 1999-4907
    EISSN: 1999-4907
    DOI: 10.3390/f12091227
  • Source: ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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