Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry

The existence of degraded forests is common in the Eastern Amazon. The maintenance of these forests standing and the recovery of their productivity play an important role in the conservation of biodiversity, storage and carbon sequestration. However, the management techniques currently employed are...

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Autores principales:	Agust Sales, Marco Antonio Siviero, Sabrina Benmuyal Vieira, Jorge Alberto Gazel Yared, Ademir Roberto Ruschel, Márcio Lopes da Silva
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	BDq method Eastern Amazon degraded tropical forest forest restoration forest economy logging selection criteria Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/4213ca158f2e4cf691bd68907925682f
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spelling	oai:doaj.org-article:4213ca158f2e4cf691bd68907925682f2021-11-25T17:22:15ZSilvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry10.3390/d131105091424-2818https://doaj.org/article/4213ca158f2e4cf691bd68907925682f2021-10-01T00:00:00Zhttps://www.mdpi.com/1424-2818/13/11/509https://doaj.org/toc/1424-2818The existence of degraded forests is common in the Eastern Amazon. The maintenance of these forests standing and the recovery of their productivity play an important role in the conservation of biodiversity, storage and carbon sequestration. However, the management techniques currently employed are designed for natural forests in the first harvest cycle or lightly explored and do not apply adequately to forests that have gone through several harvest cycles. Therefore, adaptations and the establishment of new management criteria that take into account other characteristics of these types of forests are necessary to ensure their sustainability. The objective of this study was to propose a silvicultural management system that has the potential to recover and perpetuate the productivity of an intensively logged tropical forest. A forest census was carried out on 535.6 ha for trees with dbh ≥ 25 cm. With these data, the following two treatments were designed: (1) criteria: the BDq method was applied from B = 9.8 m<sup>2</sup> ha<sup>−1</sup>, D = 100 cm and q = 2. The criteria for standing wood commercialization were, in this order, first, Health; second, Tree Stem; third, Tree Density and fourth, dbh ≥ 105 cm. (2) Control: the planning was in accordance with Brazilian regulations. For the cost–benefit and sensitivity analysis, the Net Present Value (NPV) was used and a projection of ±20% was made in the commercial price of standing wood. In the criteria treatment, a higher number of trees and species destined for the commercialization of standing wood was verified in relation to the control treatment, showing a greater diversity of species. In the criteria treatment, NPV was positive and superior to the control treatment in all scenarios. The proposed silvicultural management system with an object of an explored and enriched forest, with criteria for harvesting trees with a minimum cut diameter of 25 cm, proved to be viable to generate economic returns and with conservationist potential for the continuous supply of forest products and maintaining biodiversity.Agust SalesMarco Antonio SivieroSabrina Benmuyal VieiraJorge Alberto Gazel YaredAdemir Roberto RuschelMárcio Lopes da SilvaMDPI AGarticleBDq methodEastern Amazondegraded tropical forestforest restorationforest economylogging selection criteriaBiology (General)QH301-705.5ENDiversity, Vol 13, Iss 509, p 509 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	BDq method Eastern Amazon degraded tropical forest forest restoration forest economy logging selection criteria Biology (General) QH301-705.5
spellingShingle	BDq method Eastern Amazon degraded tropical forest forest restoration forest economy logging selection criteria Biology (General) QH301-705.5 Agust Sales Marco Antonio Siviero Sabrina Benmuyal Vieira Jorge Alberto Gazel Yared Ademir Roberto Ruschel Márcio Lopes da Silva Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry
description	The existence of degraded forests is common in the Eastern Amazon. The maintenance of these forests standing and the recovery of their productivity play an important role in the conservation of biodiversity, storage and carbon sequestration. However, the management techniques currently employed are designed for natural forests in the first harvest cycle or lightly explored and do not apply adequately to forests that have gone through several harvest cycles. Therefore, adaptations and the establishment of new management criteria that take into account other characteristics of these types of forests are necessary to ensure their sustainability. The objective of this study was to propose a silvicultural management system that has the potential to recover and perpetuate the productivity of an intensively logged tropical forest. A forest census was carried out on 535.6 ha for trees with dbh ≥ 25 cm. With these data, the following two treatments were designed: (1) criteria: the BDq method was applied from B = 9.8 m<sup>2</sup> ha<sup>−1</sup>, D = 100 cm and q = 2. The criteria for standing wood commercialization were, in this order, first, Health; second, Tree Stem; third, Tree Density and fourth, dbh ≥ 105 cm. (2) Control: the planning was in accordance with Brazilian regulations. For the cost–benefit and sensitivity analysis, the Net Present Value (NPV) was used and a projection of ±20% was made in the commercial price of standing wood. In the criteria treatment, a higher number of trees and species destined for the commercialization of standing wood was verified in relation to the control treatment, showing a greater diversity of species. In the criteria treatment, NPV was positive and superior to the control treatment in all scenarios. The proposed silvicultural management system with an object of an explored and enriched forest, with criteria for harvesting trees with a minimum cut diameter of 25 cm, proved to be viable to generate economic returns and with conservationist potential for the continuous supply of forest products and maintaining biodiversity.
format	article
author	Agust Sales Marco Antonio Siviero Sabrina Benmuyal Vieira Jorge Alberto Gazel Yared Ademir Roberto Ruschel Márcio Lopes da Silva
author_facet	Agust Sales Marco Antonio Siviero Sabrina Benmuyal Vieira Jorge Alberto Gazel Yared Ademir Roberto Ruschel Márcio Lopes da Silva
author_sort	Agust Sales
title	Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry
title_short	Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry
title_full	Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry
title_fullStr	Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry
title_full_unstemmed	Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry
title_sort	silvicultural management system applied to logged forests in the brazilian amazon: a case study of adaptation of techniques to increase the yield and diversity of species forestry
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4213ca158f2e4cf691bd68907925682f
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Silvicultural Management System Applied to Logged Forests in the Brazilian Amazon: A Case Study of Adaptation of Techniques to Increase the Yield and Diversity of Species Forestry

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