Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience
Eucalyptus is the dominant and most productive planted forest in Brazil, covering around 3.4 million ha for the production of charcoal, pulp, sawtimber, timber plates, wood foils, plywood and for building purposes. At the early establishment of the forest plantations, during the second half of the 1960s, the eucalypt yield was 10 m3 ha [exposant]-1 y [exposant]1. Now, as a result of investments in research and technology, the average productivity is 38 m3 ha [exposant]1 y [exposant]1. The productivity restrictions are related to the following environmental factors, in order of importance: water deficits > nutrient deficiency > soil depth and strength. The clonal forests have been fundamental in sites with larger water and nutrient restrictions, where they out-perform those established from traditional seed-based planting stock. When the environmental limitations are small the productivities of plantations based on clones or seeds appear to be similar. In the long term there are risks to sustainability, because of the low fertility and low reserves of primary minerals in the soils, which are, commonly, loamy and clayey oxisols and ultisols. Usually, a decline of soil quality is caused by management that does not conserve soil and site resources, damages soil physical and chemical characteristics, and insufficient or unbalanced fertiliser management. The problem is more serious when fast-growing genotypes are planted, which have a high nutrient demand and uptake capacity, and therefore high nutrient output through harvesting. The need to mobilise less soil by providing more cover and protection, reduce the nutrient and organic matter losses, preserve crucial physical properties as permeability (root growth, infiltration and aeration), improve weed control and reduce costs has led to a progressive increase in the use of minimum cultivation practices during the last 20 years, which has been accepted as a good alternative to keep or increase site quality in the long term. In this paper we provide a synthesis and critical appraisal of the research results and practical implications of early silvicultural management on long-term site productivity of fast-growing eucalypt plantations arising from the Brazilian context.
Main Authors: | , , , , |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | K10 - Production forestière, Eucalyptus, plantation forestière, sylviculture, fertilisation, déficit d'humidité du sol, résidu de récolte, rendement des cultures, croissance, travail du sol, http://aims.fao.org/aos/agrovoc/c_2683, http://aims.fao.org/aos/agrovoc/c_3048, http://aims.fao.org/aos/agrovoc/c_7071, http://aims.fao.org/aos/agrovoc/c_10795, http://aims.fao.org/aos/agrovoc/c_25307, http://aims.fao.org/aos/agrovoc/c_16118, http://aims.fao.org/aos/agrovoc/c_10176, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_7771, http://aims.fao.org/aos/agrovoc/c_1070, |
Online Access: | http://agritrop.cirad.fr/547543/ http://agritrop.cirad.fr/547543/1/document_547543.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-547543 |
---|---|
record_format |
koha |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
K10 - Production forestière Eucalyptus plantation forestière sylviculture fertilisation déficit d'humidité du sol résidu de récolte rendement des cultures croissance travail du sol http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_7071 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_25307 http://aims.fao.org/aos/agrovoc/c_16118 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_7771 http://aims.fao.org/aos/agrovoc/c_1070 K10 - Production forestière Eucalyptus plantation forestière sylviculture fertilisation déficit d'humidité du sol résidu de récolte rendement des cultures croissance travail du sol http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_7071 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_25307 http://aims.fao.org/aos/agrovoc/c_16118 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_7771 http://aims.fao.org/aos/agrovoc/c_1070 |
spellingShingle |
K10 - Production forestière Eucalyptus plantation forestière sylviculture fertilisation déficit d'humidité du sol résidu de récolte rendement des cultures croissance travail du sol http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_7071 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_25307 http://aims.fao.org/aos/agrovoc/c_16118 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_7771 http://aims.fao.org/aos/agrovoc/c_1070 K10 - Production forestière Eucalyptus plantation forestière sylviculture fertilisation déficit d'humidité du sol résidu de récolte rendement des cultures croissance travail du sol http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_7071 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_25307 http://aims.fao.org/aos/agrovoc/c_16118 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_7771 http://aims.fao.org/aos/agrovoc/c_1070 Gonçalves, José Leonardo M. Stape, Jose Luiz Laclau, Jean-Paul Bouillet, Jean-Pierre Ranger, Jacques Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience |
description |
Eucalyptus is the dominant and most productive planted forest in Brazil, covering around 3.4 million ha for the production of charcoal, pulp, sawtimber, timber plates, wood foils, plywood and for building purposes. At the early establishment of the forest plantations, during the second half of the 1960s, the eucalypt yield was 10 m3 ha [exposant]-1 y [exposant]1. Now, as a result of investments in research and technology, the average productivity is 38 m3 ha [exposant]1 y [exposant]1. The productivity restrictions are related to the following environmental factors, in order of importance: water deficits > nutrient deficiency > soil depth and strength. The clonal forests have been fundamental in sites with larger water and nutrient restrictions, where they out-perform those established from traditional seed-based planting stock. When the environmental limitations are small the productivities of plantations based on clones or seeds appear to be similar. In the long term there are risks to sustainability, because of the low fertility and low reserves of primary minerals in the soils, which are, commonly, loamy and clayey oxisols and ultisols. Usually, a decline of soil quality is caused by management that does not conserve soil and site resources, damages soil physical and chemical characteristics, and insufficient or unbalanced fertiliser management. The problem is more serious when fast-growing genotypes are planted, which have a high nutrient demand and uptake capacity, and therefore high nutrient output through harvesting. The need to mobilise less soil by providing more cover and protection, reduce the nutrient and organic matter losses, preserve crucial physical properties as permeability (root growth, infiltration and aeration), improve weed control and reduce costs has led to a progressive increase in the use of minimum cultivation practices during the last 20 years, which has been accepted as a good alternative to keep or increase site quality in the long term. In this paper we provide a synthesis and critical appraisal of the research results and practical implications of early silvicultural management on long-term site productivity of fast-growing eucalypt plantations arising from the Brazilian context. |
format |
article |
topic_facet |
K10 - Production forestière Eucalyptus plantation forestière sylviculture fertilisation déficit d'humidité du sol résidu de récolte rendement des cultures croissance travail du sol http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_7071 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_25307 http://aims.fao.org/aos/agrovoc/c_16118 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_7771 http://aims.fao.org/aos/agrovoc/c_1070 |
author |
Gonçalves, José Leonardo M. Stape, Jose Luiz Laclau, Jean-Paul Bouillet, Jean-Pierre Ranger, Jacques |
author_facet |
Gonçalves, José Leonardo M. Stape, Jose Luiz Laclau, Jean-Paul Bouillet, Jean-Pierre Ranger, Jacques |
author_sort |
Gonçalves, José Leonardo M. |
title |
Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience |
title_short |
Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience |
title_full |
Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience |
title_fullStr |
Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience |
title_full_unstemmed |
Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience |
title_sort |
assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the brazilian experience |
url |
http://agritrop.cirad.fr/547543/ http://agritrop.cirad.fr/547543/1/document_547543.pdf |
work_keys_str_mv |
AT goncalvesjoseleonardom assessingtheeffectsofearlysilviculturalmanagementonlongtermsiteproductivityoffastgrowingeucalyptplantatationsthebrazilianexperience AT stapejoseluiz assessingtheeffectsofearlysilviculturalmanagementonlongtermsiteproductivityoffastgrowingeucalyptplantatationsthebrazilianexperience AT laclaujeanpaul assessingtheeffectsofearlysilviculturalmanagementonlongtermsiteproductivityoffastgrowingeucalyptplantatationsthebrazilianexperience AT bouilletjeanpierre assessingtheeffectsofearlysilviculturalmanagementonlongtermsiteproductivityoffastgrowingeucalyptplantatationsthebrazilianexperience AT rangerjacques assessingtheeffectsofearlysilviculturalmanagementonlongtermsiteproductivityoffastgrowingeucalyptplantatationsthebrazilianexperience |
_version_ |
1792497084065120256 |
spelling |
dig-cirad-fr-5475432024-01-28T16:39:21Z http://agritrop.cirad.fr/547543/ http://agritrop.cirad.fr/547543/ Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience. Gonçalves José Leonardo M., Stape Jose Luiz, Laclau Jean-Paul, Bouillet Jean-Pierre, Ranger Jacques. 2008. Southern Forests, 70 (2) : 105-118. IUFRO Conference on Eucalypts and Diversity - Balancing Productivity and Sustainability, Durban, Afrique du Sud, 22 Octobre 2007/26 Octobre 2007.https://doi.org/10.2989/SOUTH.FOR.2008.70.2.6.534 <https://doi.org/10.2989/SOUTH.FOR.2008.70.2.6.534> Assessing the effects of early silvicultural management on long-term site productivity of fast-growing eucalypt plantatations: the Brazilian experience Gonçalves, José Leonardo M. Stape, Jose Luiz Laclau, Jean-Paul Bouillet, Jean-Pierre Ranger, Jacques eng 2008 Southern Forests K10 - Production forestière Eucalyptus plantation forestière sylviculture fertilisation déficit d'humidité du sol résidu de récolte rendement des cultures croissance travail du sol http://aims.fao.org/aos/agrovoc/c_2683 http://aims.fao.org/aos/agrovoc/c_3048 http://aims.fao.org/aos/agrovoc/c_7071 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_25307 http://aims.fao.org/aos/agrovoc/c_16118 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_7771 Brésil http://aims.fao.org/aos/agrovoc/c_1070 Eucalyptus is the dominant and most productive planted forest in Brazil, covering around 3.4 million ha for the production of charcoal, pulp, sawtimber, timber plates, wood foils, plywood and for building purposes. At the early establishment of the forest plantations, during the second half of the 1960s, the eucalypt yield was 10 m3 ha [exposant]-1 y [exposant]1. Now, as a result of investments in research and technology, the average productivity is 38 m3 ha [exposant]1 y [exposant]1. The productivity restrictions are related to the following environmental factors, in order of importance: water deficits > nutrient deficiency > soil depth and strength. The clonal forests have been fundamental in sites with larger water and nutrient restrictions, where they out-perform those established from traditional seed-based planting stock. When the environmental limitations are small the productivities of plantations based on clones or seeds appear to be similar. In the long term there are risks to sustainability, because of the low fertility and low reserves of primary minerals in the soils, which are, commonly, loamy and clayey oxisols and ultisols. Usually, a decline of soil quality is caused by management that does not conserve soil and site resources, damages soil physical and chemical characteristics, and insufficient or unbalanced fertiliser management. The problem is more serious when fast-growing genotypes are planted, which have a high nutrient demand and uptake capacity, and therefore high nutrient output through harvesting. The need to mobilise less soil by providing more cover and protection, reduce the nutrient and organic matter losses, preserve crucial physical properties as permeability (root growth, infiltration and aeration), improve weed control and reduce costs has led to a progressive increase in the use of minimum cultivation practices during the last 20 years, which has been accepted as a good alternative to keep or increase site quality in the long term. In this paper we provide a synthesis and critical appraisal of the research results and practical implications of early silvicultural management on long-term site productivity of fast-growing eucalypt plantations arising from the Brazilian context. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/547543/1/document_547543.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.2989/SOUTH.FOR.2008.70.2.6.534 10.2989/SOUTH.FOR.2008.70.2.6.534 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=185718 info:eu-repo/semantics/altIdentifier/doi/10.2989/SOUTH.FOR.2008.70.2.6.534 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.2989/SOUTH.FOR.2008.70.2.6.534 |