Mixture enhances productivity in a two-species forest : Evidence from a modeling approach
The effect of mixture on productivity has been widely studied for applications related to agriculture but results in forestry are scarce due to the difficulty of conducting experiments. Using a modeling approach, we analyzed the effect of mixture on the productivity of forest stands composed of sessile oak and Scots pine. To determine whether mixture had a positive effect on productivity and if there was an optimum mixing proportion, we used an aggregation technique involving a mean-field approximation to analyze a distance-dependent individual-based model. We conducted a local sensitivity analysis to identify the factors that influenced the results the most. Our model made it possible to predict the species proportion where productivity peaks. This indicates that transgressive over-yielding can occur in these stands and suggests that the two species are complementary. For the studied growth period, mixture does have a positive effect on the productivity of oak-pine stands. Depending on the plot, the optimum species proportion ranges from 38 to 74% of oak and the gain in productivity compared to the current mixture is 2.2% on average. The optimum mixing proportion mainly depends on parameters concerning intra-specific oak competition and yet, intra-specific competition higher than inter-specific competition was not sufficient to ensure over-yielding in these stands. Our work also shows how results obtained for individual tree growth may provide information on the productivity of the whole stand. This approach could help us to better understand the link between productivity, stand characteristics, and species growth parameters in mixed forests.
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Subjects: | K10 - Production forestière, F08 - Systèmes et modes de culture, U10 - Informatique, mathématiques et statistiques, F62 - Physiologie végétale - Croissance et développement, Pinus sylvestris, Quercus, rendement des cultures, modélisation des cultures, forêt mélangée, http://aims.fao.org/aos/agrovoc/c_5912, http://aims.fao.org/aos/agrovoc/c_6409, http://aims.fao.org/aos/agrovoc/c_10176, http://aims.fao.org/aos/agrovoc/c_9000024, http://aims.fao.org/aos/agrovoc/c_4874, http://aims.fao.org/aos/agrovoc/c_3161, |
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dig-cirad-fr-5631812024-01-28T20:06:24Z http://agritrop.cirad.fr/563181/ http://agritrop.cirad.fr/563181/ Mixture enhances productivity in a two-species forest : Evidence from a modeling approach. Perot Thomas, Picard Nicolas. 2012. Ecological Research, 27 (1) : 83-94.https://doi.org/10.1007/s11284-011-0873-9 <https://doi.org/10.1007/s11284-011-0873-9> Mixture enhances productivity in a two-species forest : Evidence from a modeling approach Perot, Thomas Picard, Nicolas eng 2012 Ecological Research K10 - Production forestière F08 - Systèmes et modes de culture U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Pinus sylvestris Quercus rendement des cultures modélisation des cultures forêt mélangée http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_6409 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_4874 Gabon http://aims.fao.org/aos/agrovoc/c_3161 The effect of mixture on productivity has been widely studied for applications related to agriculture but results in forestry are scarce due to the difficulty of conducting experiments. Using a modeling approach, we analyzed the effect of mixture on the productivity of forest stands composed of sessile oak and Scots pine. To determine whether mixture had a positive effect on productivity and if there was an optimum mixing proportion, we used an aggregation technique involving a mean-field approximation to analyze a distance-dependent individual-based model. We conducted a local sensitivity analysis to identify the factors that influenced the results the most. Our model made it possible to predict the species proportion where productivity peaks. This indicates that transgressive over-yielding can occur in these stands and suggests that the two species are complementary. For the studied growth period, mixture does have a positive effect on the productivity of oak-pine stands. Depending on the plot, the optimum species proportion ranges from 38 to 74% of oak and the gain in productivity compared to the current mixture is 2.2% on average. The optimum mixing proportion mainly depends on parameters concerning intra-specific oak competition and yet, intra-specific competition higher than inter-specific competition was not sufficient to ensure over-yielding in these stands. Our work also shows how results obtained for individual tree growth may provide information on the productivity of the whole stand. This approach could help us to better understand the link between productivity, stand characteristics, and species growth parameters in mixed forests. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/563181/1/document_563181.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1007/s11284-011-0873-9 10.1007/s11284-011-0873-9 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=213974 info:eu-repo/semantics/altIdentifier/doi/10.1007/s11284-011-0873-9 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1007/s11284-011-0873-9 |
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K10 - Production forestière F08 - Systèmes et modes de culture U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Pinus sylvestris Quercus rendement des cultures modélisation des cultures forêt mélangée http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_6409 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_4874 http://aims.fao.org/aos/agrovoc/c_3161 K10 - Production forestière F08 - Systèmes et modes de culture U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Pinus sylvestris Quercus rendement des cultures modélisation des cultures forêt mélangée http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_6409 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_4874 http://aims.fao.org/aos/agrovoc/c_3161 |
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K10 - Production forestière F08 - Systèmes et modes de culture U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Pinus sylvestris Quercus rendement des cultures modélisation des cultures forêt mélangée http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_6409 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_4874 http://aims.fao.org/aos/agrovoc/c_3161 K10 - Production forestière F08 - Systèmes et modes de culture U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Pinus sylvestris Quercus rendement des cultures modélisation des cultures forêt mélangée http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_6409 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_4874 http://aims.fao.org/aos/agrovoc/c_3161 Perot, Thomas Picard, Nicolas Mixture enhances productivity in a two-species forest : Evidence from a modeling approach |
description |
The effect of mixture on productivity has been widely studied for applications related to agriculture but results in forestry are scarce due to the difficulty of conducting experiments. Using a modeling approach, we analyzed the effect of mixture on the productivity of forest stands composed of sessile oak and Scots pine. To determine whether mixture had a positive effect on productivity and if there was an optimum mixing proportion, we used an aggregation technique involving a mean-field approximation to analyze a distance-dependent individual-based model. We conducted a local sensitivity analysis to identify the factors that influenced the results the most. Our model made it possible to predict the species proportion where productivity peaks. This indicates that transgressive over-yielding can occur in these stands and suggests that the two species are complementary. For the studied growth period, mixture does have a positive effect on the productivity of oak-pine stands. Depending on the plot, the optimum species proportion ranges from 38 to 74% of oak and the gain in productivity compared to the current mixture is 2.2% on average. The optimum mixing proportion mainly depends on parameters concerning intra-specific oak competition and yet, intra-specific competition higher than inter-specific competition was not sufficient to ensure over-yielding in these stands. Our work also shows how results obtained for individual tree growth may provide information on the productivity of the whole stand. This approach could help us to better understand the link between productivity, stand characteristics, and species growth parameters in mixed forests. |
format |
article |
topic_facet |
K10 - Production forestière F08 - Systèmes et modes de culture U10 - Informatique, mathématiques et statistiques F62 - Physiologie végétale - Croissance et développement Pinus sylvestris Quercus rendement des cultures modélisation des cultures forêt mélangée http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_6409 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_4874 http://aims.fao.org/aos/agrovoc/c_3161 |
author |
Perot, Thomas Picard, Nicolas |
author_facet |
Perot, Thomas Picard, Nicolas |
author_sort |
Perot, Thomas |
title |
Mixture enhances productivity in a two-species forest : Evidence from a modeling approach |
title_short |
Mixture enhances productivity in a two-species forest : Evidence from a modeling approach |
title_full |
Mixture enhances productivity in a two-species forest : Evidence from a modeling approach |
title_fullStr |
Mixture enhances productivity in a two-species forest : Evidence from a modeling approach |
title_full_unstemmed |
Mixture enhances productivity in a two-species forest : Evidence from a modeling approach |
title_sort |
mixture enhances productivity in a two-species forest : evidence from a modeling approach |
url |
http://agritrop.cirad.fr/563181/ http://agritrop.cirad.fr/563181/1/document_563181.pdf |
work_keys_str_mv |
AT perotthomas mixtureenhancesproductivityinatwospeciesforestevidencefromamodelingapproach AT picardnicolas mixtureenhancesproductivityinatwospeciesforestevidencefromamodelingapproach |
_version_ |
1792498077309861888 |