Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models
In this paper, the authors propose to assess the timber quality of a standing tree from usual forest inventory measurements such as tree age, height and diameter at breast height. Growth equations are used to reconstruct the past growth of a tree and to predict its current internal structure, namely ring distribution. These models are linked to allometric equations that estimate the characteristics of branches, to models that predict physical wood properties such as wood basic density from ring distribution and to a glass-log software that simulates the sawing and grading of any board located in a stem whose morphology is known in detail. The French Forest Inventory data for Norway spruce are available at three dates : 1973, 1981 and 1992 (C1, C2 and C3). One of the most important French districts for Norway spruce in France, the Vosges district, has been chosen. Between the first and second forest inventory, both forest area and total volumes have increased. Between C2 and C3, the forest area remains the same but the standing volume has increased consequently. In the second part of this paper the authors analyse, for the three dates, the stands dominant heights for the same stand age classes; the stand ages for similar breast height diameter classes; the timber properties for similar breast height diameter classes. In the last part, they discuss the possibility of taking into account the increase of fertility into a stand growth and wood quality model modelling approach
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Subjects: | K10 - Production forestière, U10 - Informatique, mathématiques et statistiques, F62 - Physiologie végétale - Croissance et développement, Picea abies, Abies alba, bois, qualité, croissance, modèle de simulation, inventaire forestier, dimension, propriété du bois, http://aims.fao.org/aos/agrovoc/c_5852, http://aims.fao.org/aos/agrovoc/c_11, http://aims.fao.org/aos/agrovoc/c_8421, http://aims.fao.org/aos/agrovoc/c_6400, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_24242, http://aims.fao.org/aos/agrovoc/c_24174, http://aims.fao.org/aos/agrovoc/c_2283, http://aims.fao.org/aos/agrovoc/c_34363, http://aims.fao.org/aos/agrovoc/c_311, http://aims.fao.org/aos/agrovoc/c_3081, |
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dig-cirad-fr-2638312024-01-27T08:04:46Z http://agritrop.cirad.fr/263831/ http://agritrop.cirad.fr/263831/ Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models. Leban Jean-Michel, Houllier François, Pignard Gérôme, Saint André Laurent. 1999. In : Causes and consequences of accelerating tree growth in Europe : International seminar, Nancy, 17-19 may 1998. Timo Karjalainen ; Heinrich Spiecker ; Olivier Laroussinie (eds.). Joensuu : EFI, 181-195. (EFI Proceedings, 27) European Forestry Institute International Seminar, Nancy, France, 17 Mai 1998/19 Mai 1998. Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models Leban, Jean-Michel Houllier, François Pignard, Gérôme Saint André, Laurent eng 1999 EFI Causes and consequences of accelerating tree growth in Europe : International seminar, Nancy, 17-19 may 1998 K10 - Production forestière U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Picea abies Abies alba bois qualité croissance modèle de simulation inventaire forestier dimension propriété du bois http://aims.fao.org/aos/agrovoc/c_5852 http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_24174 http://aims.fao.org/aos/agrovoc/c_2283 http://aims.fao.org/aos/agrovoc/c_34363 Alsace France http://aims.fao.org/aos/agrovoc/c_311 http://aims.fao.org/aos/agrovoc/c_3081 In this paper, the authors propose to assess the timber quality of a standing tree from usual forest inventory measurements such as tree age, height and diameter at breast height. Growth equations are used to reconstruct the past growth of a tree and to predict its current internal structure, namely ring distribution. These models are linked to allometric equations that estimate the characteristics of branches, to models that predict physical wood properties such as wood basic density from ring distribution and to a glass-log software that simulates the sawing and grading of any board located in a stem whose morphology is known in detail. The French Forest Inventory data for Norway spruce are available at three dates : 1973, 1981 and 1992 (C1, C2 and C3). One of the most important French districts for Norway spruce in France, the Vosges district, has been chosen. Between the first and second forest inventory, both forest area and total volumes have increased. Between C2 and C3, the forest area remains the same but the standing volume has increased consequently. In the second part of this paper the authors analyse, for the three dates, the stands dominant heights for the same stand age classes; the stand ages for similar breast height diameter classes; the timber properties for similar breast height diameter classes. In the last part, they discuss the possibility of taking into account the increase of fertility into a stand growth and wood quality model modelling approach conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/closedAccess http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=6142 |
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K10 - Production forestière U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Picea abies Abies alba bois qualité croissance modèle de simulation inventaire forestier dimension propriété du bois http://aims.fao.org/aos/agrovoc/c_5852 http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_24174 http://aims.fao.org/aos/agrovoc/c_2283 http://aims.fao.org/aos/agrovoc/c_34363 http://aims.fao.org/aos/agrovoc/c_311 http://aims.fao.org/aos/agrovoc/c_3081 K10 - Production forestière U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Picea abies Abies alba bois qualité croissance modèle de simulation inventaire forestier dimension propriété du bois http://aims.fao.org/aos/agrovoc/c_5852 http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_24174 http://aims.fao.org/aos/agrovoc/c_2283 http://aims.fao.org/aos/agrovoc/c_34363 http://aims.fao.org/aos/agrovoc/c_311 http://aims.fao.org/aos/agrovoc/c_3081 |
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K10 - Production forestière U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Picea abies Abies alba bois qualité croissance modèle de simulation inventaire forestier dimension propriété du bois http://aims.fao.org/aos/agrovoc/c_5852 http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_24174 http://aims.fao.org/aos/agrovoc/c_2283 http://aims.fao.org/aos/agrovoc/c_34363 http://aims.fao.org/aos/agrovoc/c_311 http://aims.fao.org/aos/agrovoc/c_3081 K10 - Production forestière U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Picea abies Abies alba bois qualité croissance modèle de simulation inventaire forestier dimension propriété du bois http://aims.fao.org/aos/agrovoc/c_5852 http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_24174 http://aims.fao.org/aos/agrovoc/c_2283 http://aims.fao.org/aos/agrovoc/c_34363 http://aims.fao.org/aos/agrovoc/c_311 http://aims.fao.org/aos/agrovoc/c_3081 Leban, Jean-Michel Houllier, François Pignard, Gérôme Saint André, Laurent Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models |
description |
In this paper, the authors propose to assess the timber quality of a standing tree from usual forest inventory measurements such as tree age, height and diameter at breast height. Growth equations are used to reconstruct the past growth of a tree and to predict its current internal structure, namely ring distribution. These models are linked to allometric equations that estimate the characteristics of branches, to models that predict physical wood properties such as wood basic density from ring distribution and to a glass-log software that simulates the sawing and grading of any board located in a stem whose morphology is known in detail. The French Forest Inventory data for Norway spruce are available at three dates : 1973, 1981 and 1992 (C1, C2 and C3). One of the most important French districts for Norway spruce in France, the Vosges district, has been chosen. Between the first and second forest inventory, both forest area and total volumes have increased. Between C2 and C3, the forest area remains the same but the standing volume has increased consequently. In the second part of this paper the authors analyse, for the three dates, the stands dominant heights for the same stand age classes; the stand ages for similar breast height diameter classes; the timber properties for similar breast height diameter classes. In the last part, they discuss the possibility of taking into account the increase of fertility into a stand growth and wood quality model modelling approach |
format |
conference_item |
topic_facet |
K10 - Production forestière U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Picea abies Abies alba bois qualité croissance modèle de simulation inventaire forestier dimension propriété du bois http://aims.fao.org/aos/agrovoc/c_5852 http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_24174 http://aims.fao.org/aos/agrovoc/c_2283 http://aims.fao.org/aos/agrovoc/c_34363 http://aims.fao.org/aos/agrovoc/c_311 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Leban, Jean-Michel Houllier, François Pignard, Gérôme Saint André, Laurent |
author_facet |
Leban, Jean-Michel Houllier, François Pignard, Gérôme Saint André, Laurent |
author_sort |
Leban, Jean-Michel |
title |
Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models |
title_short |
Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models |
title_full |
Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models |
title_fullStr |
Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models |
title_full_unstemmed |
Assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models |
title_sort |
assessment of long-term changes in timber quality : combining national forest inventory data and growth and wood quality models |
publisher |
EFI |
url |
http://agritrop.cirad.fr/263831/ |
work_keys_str_mv |
AT lebanjeanmichel assessmentoflongtermchangesintimberqualitycombiningnationalforestinventorydataandgrowthandwoodqualitymodels AT houllierfrancois assessmentoflongtermchangesintimberqualitycombiningnationalforestinventorydataandgrowthandwoodqualitymodels AT pignardgerome assessmentoflongtermchangesintimberqualitycombiningnationalforestinventorydataandgrowthandwoodqualitymodels AT saintandrelaurent assessmentoflongtermchangesintimberqualitycombiningnationalforestinventorydataandgrowthandwoodqualitymodels |
_version_ |
1792485511086997504 |