{"id":39763,"date":"2026-03-03T16:22:27","date_gmt":"2026-03-03T15:22:27","guid":{"rendered":"https:\/\/srfb.be\/?page_id=39763"},"modified":"2026-03-10T09:26:48","modified_gmt":"2026-03-10T08:26:48","slug":"silvapedia-non-membre","status":"publish","type":"page","link":"https:\/\/srfb.be\/nl\/informations-sur-les-forets\/silvapedia-non-membre\/","title":{"rendered":"Silvapedia"},"content":{"rendered":"<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-899e6947 wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--60);padding-right:0;padding-bottom:var(--wp--preset--spacing--60);padding-left:0\"><div class=\"yoast-breadcrumbs\"><span><span><a href=\"https:\/\/kbbm.be\/de\/\">Onthaal<\/a><\/span> &gt; <span><a href=\"https:\/\/srfb.be\/nl\/informatie-over-de-bossen\/\">Informatie over de bossen<\/a><\/span> &gt; <span class=\"breadcrumb_last\" aria-current=\"page\"><strong>Silvapedia<\/strong><\/span><\/span><\/div><\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile has-grey-color-background-color has-background\" style=\"border-top-left-radius:7px;border-top-right-radius:7px;border-bottom-left-radius:7px;border-bottom-right-radius:7px;margin-top:var(--wp--preset--spacing--60);margin-bottom:var(--wp--preset--spacing--60);padding-top:0;padding-bottom:0\"><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\"><strong>De essencesfiches van de SBV-B<\/strong><\/h2>\n\n\n\n<p>Gesterkt door haar knowhow en expertise heeft de SRFB in de loop der jaren een schat aan informatie verzameld over tal van, zowel bekende als minder bekende, boomsoorten.&nbsp;<br>Deze kennis omvat onder meer essences die in het kader van het project zijn getest&nbsp;<em><a href=\"https:\/\/treesforfuture.be\/nl\/\" type=\"link\" id=\"https:\/\/treesforfuture.be\/\" target=\"_blank\" rel=\"noreferrer noopener\">Bomen voor de Toekomst<\/a><\/em>.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage-1024x559.jpg\" alt=\"Trees for Future - Paysage plants\" class=\"wp-image-21830 size-full\" srcset=\"https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage-1024x559.jpg 1024w, https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage-600x328.jpg 600w, https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage-300x164.jpg 300w, https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage-768x419.jpg 768w, https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage-64x35.jpg 64w, https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage-18x10.jpg 18w, https:\/\/srfb.be\/wp-content\/uploads\/2022\/02\/treesforfuture-paysage.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-70f4fdbb wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-border-color is-layout-constrained wp-container-core-group-is-layout-33d66a2b wp-block-group-is-layout-constrained\" style=\"border-color:#f2f2f2;border-width:3px;border-top-left-radius:7px;border-top-right-radius:7px;border-bottom-left-radius:7px;border-bottom-right-radius:7px;padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--60);padding-bottom:0;padding-left:var(--wp--preset--spacing--60)\">\n<p>Om deze kennisbank te delen met haar leden, heeft de SRFB essences-fiches ontwikkeld die exclusief toegankelijk zijn via de\u2019<a href=\"https:\/\/srfb.be\/nl\/ledengebied\/\" type=\"page\" id=\"30268\" target=\"_blank\" rel=\"noreferrer noopener\">leden\u533a<\/a>.&nbsp;<br>Elk dossier behandelt de essentie op brede wijze: herkenningscriteria, ecologische vereisten, bosbouw, technische kenmerken van het hout, afzetmogelijkheden... Wat betreft de technische aspecten van het materiaal hout, hebben de dossiers geprofiteerd van waardevolle informatie en een fijne herlezing door&nbsp;<a href=\"https:\/\/www.houtinfobois.be\/\" type=\"link\" id=\"https:\/\/www.houtinfobois.be\/\" target=\"_blank\" rel=\"noreferrer noopener\">Hout Info Hout<\/a> die we willen bedanken voor hun medewerking.&nbsp;<\/p>\n\n\n\n<p>Het wordt gepresenteerd in een taal die toegankelijk is, maar toch technisch rigoureus en precies.<br>Deze kennisbank, genaamd&nbsp;<strong>Silvapedia<\/strong>, wordt regelmatig verrijkt door de publicatie van nieuwe fiches.<\/p>\n\n\n\n<div class=\"wp-block-group is-content-justification-center is-nowrap is-layout-flex wp-container-core-group-is-layout-35e816eb wp-block-group-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--70);margin-bottom:var(--wp--preset--spacing--70)\">\n<hr class=\"wp-block-separator has-text-color has-grey-color-color has-alpha-channel-opacity has-grey-color-background-color has-background wp-container-content-759e20a8\" style=\"margin-top:0;margin-bottom:0\"\/>\n\n\n\n<figure class=\"wp-block-image size-large wp-container-content-e1bb55cb\"><img decoding=\"async\" src=\"https:\/\/srfb.be\/wp-content\/uploads\/2019\/07\/intro_offrez-vous.png\" alt=\"verwen jezelf\"\/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-grey-color-color has-alpha-channel-opacity has-grey-color-background-color has-background wp-container-content-759e20a8\" style=\"margin-top:0;margin-bottom:0\"\/>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<h3 class=\"wp-block-heading has-text-align-right has-vert-fonce-color-color has-text-color has-link-color wp-elements-2d40030e1f80aa42e8116d37cc3f591d\" style=\"font-size:clamp(1.25em, 1.25rem + ((1vw - 0.2em) * 0.938), 2em);\">Ontdek een greep uit dit werk in vrije toegang met de Atlasceder.<\/h3>\n\n\n\n<p class=\"has-text-align-right has-small-font-size\" style=\"font-style:italic;font-weight:400\"><a href=\"https:\/\/srfb.be\/wp-content\/uploads\/2026\/03\/Cedre-de-lAtlas.pdf\" type=\"link\" id=\"https:\/\/srfb.be\/wp-content\/uploads\/2026\/03\/Cedre-de-lAtlas.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Het monster ontdekken <span class=\"wp-rich-text-font-awesome-icon wp-font-awesome-icon\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"fas\" data-icon=\"arrow-right-long\" class=\"svg-inline--fa fa-arrow-right-long\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 576 512\"><path fill=\"currentColor\" d=\"M566.6 278.6c12.5-12.5 12.5-32.8 0-45.3l-128-128c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3L466.7 224 32 224c-17.7 0-32 14.3-32 32s14.3 32 32 32l434.7 0-73.4 73.4c-12.5 12.5-12.5 32.8 0 45.3s32.8 12.5 45.3 0l128-128z\"><\/path><\/svg><\/span><\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/srfb.be\/wp-content\/uploads\/2026\/03\/Cedre-de-lAtlas.pdf\" target=\"_blank\" rel=\" noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"595\" height=\"841\" src=\"https:\/\/srfb.be\/wp-content\/uploads\/2026\/03\/cedre-atlas.jpeg\" alt=\"C\u00e8dre de l'Atlas - Fiche\" class=\"wp-image-39801\" style=\"aspect-ratio:0.7074891228792832;width:325px;height:auto\" srcset=\"https:\/\/srfb.be\/wp-content\/uploads\/2026\/03\/cedre-atlas.jpeg 595w, https:\/\/srfb.be\/wp-content\/uploads\/2026\/03\/cedre-atlas-212x300.jpeg 212w, https:\/\/srfb.be\/wp-content\/uploads\/2026\/03\/cedre-atlas-8x12.jpeg 8w\" sizes=\"auto, (max-width: 595px) 100vw, 595px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-grey-color-background-color has-background is-layout-constrained wp-container-core-group-is-layout-99d5396f wp-block-group-is-layout-constrained\" style=\"border-top-left-radius:7px;border-top-right-radius:7px;border-bottom-left-radius:7px;border-bottom-right-radius:7px;margin-top:var(--wp--preset--spacing--70);margin-bottom:var(--wp--preset--spacing--70);padding-top:var(--wp--preset--spacing--70);padding-right:var(--wp--preset--spacing--70);padding-bottom:var(--wp--preset--spacing--70);padding-left:var(--wp--preset--spacing--70)\">\n<p class=\"has-text-align-center has-large-font-size\" style=\"margin-top:0;margin-bottom:0;font-style:normal;font-weight:900\">Meer lezen?<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-c3d5205c wp-block-buttons-is-layout-flex\" style=\"margin-top:0;margin-bottom:0\">\n<div class=\"wp-block-button is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/srfb.be\/nl\/lid-worden\/\">Lid worden<\/a><\/div>\n<\/div>\n\n\n\n<p class=\"has-text-align-center has-small-font-size\" style=\"margin-top:0;margin-bottom:0;font-style:italic;font-weight:400\"><a href=\"https:\/\/srfb.be\/nl\/informatie-over-de-bossen\/silvapedia\/\" type=\"link\" id=\"https:\/\/srfb.be\/informations-sur-les-forets\/silvapedia\/\">Ik ben al lid!<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-content-justification-center is-nowrap is-layout-flex wp-container-core-group-is-layout-35e816eb wp-block-group-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--70);margin-bottom:var(--wp--preset--spacing--70)\">\n<hr class=\"wp-block-separator has-text-color has-grey-color-color has-alpha-channel-opacity has-grey-color-background-color has-background wp-container-content-759e20a8\" style=\"margin-top:0;margin-bottom:0\"\/>\n\n\n\n<figure class=\"wp-block-image size-large wp-container-content-e1bb55cb\"><img decoding=\"async\" src=\"https:\/\/srfb.be\/wp-content\/uploads\/2019\/07\/intro_offrez-vous.png\" alt=\"verwen jezelf\"\/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-grey-color-color has-alpha-channel-opacity has-grey-color-background-color has-background wp-container-content-759e20a8\" style=\"margin-top:0;margin-bottom:0\"\/>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-outline is-style-outline--2\"><a class=\"wp-block-button__link has-text-color has-link-color has-border-color has-small-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/srfb.be\/wp-content\/uploads\/2026\/02\/Silvapedia-Lexique.pdf\" style=\"border-color:#9e9e9e;color:#9e9e9e\" target=\"_blank\" rel=\"noreferrer noopener\">Lexicon PDF<\/a><\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" id=\"lexique\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-3&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-container-core-accordion-item-is-layout-8a368f38 wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading has-grey-color-background-color has-background\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-3-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-3\" type=\"button\" class=\"wp-block-accordion-heading__toggle\" style=\"padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\"><span class=\"wp-block-accordion-heading__toggle-title\">Lexicon<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-3\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-3-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--60)\">\n<figure class=\"wp-block-table is-style-stripes table-design\"><table><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Mot<\/th><th class=\"has-text-align-left\" data-align=\"left\">Definitie<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Ana\u00ebrobe ademhaling<\/td><td class=\"has-text-align-left\" data-align=\"left\">Toestand van een zuurstofarme omgeving, ongunstig voor wortelademhaling.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Aubier<\/td><td class=\"has-text-align-left\" data-align=\"left\">Perifere zone van het hout, fysiologisch actief, die zorgt voor de geleiding van ruwe sap.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">BRINELL (N\/mm\u00b2)<\/td><td class=\"has-text-align-left\" data-align=\"left\">De Brinell-hardheid meet de weerstand van een houtsoort tegen indrukking of verplettering. Een kleine metalen kogel wordt met een precieze belasting op het hout aangebracht en de afdruk die hij achterlaat wordt gemeten: hoe kleiner de afdruk, hoe harder het hout.<br>Dit is een eenvoudige indicator voor het vergelijken van houtsoorten: een houtsoort met een hoge Brinell-hardheid is beter bestand tegen slijtage, schokken en zagen, terwijl een zachtere houtsoort gemakkelijker te bewerken is maar minder bestand is tegen...<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Cyanogeen<\/td><td class=\"has-text-align-left\" data-align=\"left\">Planten die in staat zijn om cyanogeen glycosiden te produceren, die bij hydrolyse waterstofcyanide afgeven.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Beslis<\/td><td class=\"has-text-align-left\" data-align=\"left\">Plant die zijn bladeren verliest tijdens het ongunstige seizoen.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Draken<\/td><td class=\"has-text-align-left\" data-align=\"left\">Scheuten uit adventieve knoppen op de wortels, die voor vegetatieve voortplanting zorgen.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Steenvrucht<\/td><td class=\"has-text-align-left\" data-align=\"left\">Vlezige vrucht met een pit die \u00e9\u00e9n zaad bevat.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Natuurlijke duurzaamheid<\/td><td class=\"has-text-align-left\" data-align=\"left\">De Europese norm EN 350 definieert de natuurlijke duurzaamheid van hout tegen houtaantastende schimmels en, afzonderlijk, de natuurlijke weerstand tegen houtaantastende insecten voor de meeste in Europa gebruikte houtsoorten. De weerstand tegen insecten wordt niet in niveaus ingedeeld, maar volgens een binair principe (\u00abgevoelig\u00bb of \u00abniet-gevoelig\u00bb) afhankelijk van de betreffende soorten. De belangrijkste houtaantastende insecten in de bouw zijn: de huisboktor (Hylotrupes bajulus), die voornamelijk naaldhout aantast; de Lyctus-kever, die vooral zetmeelrijke loofhoutsoorten aantast; de gewone houtwormkever (Anobium punctatum), algemeen bekend als \u00abhoutworm\u00bb.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Hoofdhout<\/td><td class=\"has-text-align-left\" data-align=\"left\">Centraal deel van het hout, fysiologisch inactief, doorgaans duurzamer.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Essentie van mono\u00efek<\/td><td class=\"has-text-align-left\" data-align=\"left\">Soort waarbij hetzelfde individu aparte mannelijke en vrouwelijke bloemen draagt.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Bodemkundige eis<\/td><td class=\"has-text-align-left\" data-align=\"left\">Vereisten van een soort ten aanzien van bodemkenmerken (textuur, pH, drainage, rijkdom).<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Fascicul\u00e9<br>worteling<\/td><td class=\"has-text-align-left\" data-align=\"left\">Wortelstelsel bestaande uit veel wortels met vergelijkbare diameter, zonder dominante penwortel.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Gemmotherapie<\/td><td class=\"has-text-align-left\" data-align=\"left\">Therapeutisch gebruik van plantaardig embryonaal weefsel (knoppen, jonge scheuten).<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Grijzig<\/td><td class=\"has-text-align-left\" data-align=\"left\">Kweekbak die het omkrullen van wortels beperkt om functionele beworteling te stimuleren.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">JANKA (V)<\/td><td class=\"has-text-align-left\" data-align=\"left\">La duret\u00e9 Janka mesure la r\u00e9sistance du bois \u00e0 l\u2019enfoncement d\u2019une bille en acier de taille standard. On enfonce la bille \u00e0 moiti\u00e9 dans le bois et on mesure la force n\u00e9cessaire.<br>Plus la valeur est \u00e9lev\u00e9e, plus le bois est dur et r\u00e9sistant aux chocs et \u00e0 l\u2019usure.<br>Cette mesure est tr\u00e8s utilis\u00e9e pour comparer les essences de bois pour planchers, meubles ou bardages.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Lenticelle<\/td><td class=\"has-text-align-left\" data-align=\"left\">Petites ouvertures de l\u2019\u00e9corce permettant les \u00e9changes gazeux de l\u2019arbre. Elles se pr\u00e9sentent sous forme de points ou fentes l\u00e9g\u00e8rement sur\u00e9lev\u00e9s, souvent plus clairs ou plus fonc\u00e9s que l\u2019\u00e9corce, et leur forme varie selon l\u2019essence.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Masse volumique apparente<\/td><td class=\"has-text-align-left\" data-align=\"left\">Rapport entre la masse du bois et le volume total qu\u2019il occupe, vides compris. Elle d\u00e9pend fortement du taux d\u2019humidit\u00e9 et est g\u00e9n\u00e9ralement donn\u00e9e \u00e0 12 %<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Module d\u2019\u00e9lasticit\u00e9 (E)<\/td><td class=\"has-text-align-left\" data-align=\"left\">Le module d\u2019\u00e9lasticit\u00e9 mesure la capacit\u00e9 du bois \u00e0 se plier ou se d\u00e9former sous une charge sans se casser. Concr\u00e8tement, il indique dans quelle mesure un morceau de bois revient \u00e0 sa forme initiale apr\u00e8s avoir \u00e9t\u00e9 fl\u00e9chi ou comprim\u00e9. Plus la valeur est \u00e9lev\u00e9e, plus le bois est rigide et r\u00e9sistant \u00e0 la flexion.<br>Cette donn\u00e9e est utile pour choisir les essences adapt\u00e9es aux structures portantes, poutres, charpentes ou \u00e9l\u00e9ments soumis \u00e0 des charges.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">MONNIN (mm)<\/td><td class=\"has-text-align-left\" data-align=\"left\">La duret\u00e9 Monnin est une mesure de la r\u00e9sistance du bois \u00e0 l\u2019\u00e9crasement sous une charge r\u00e9partie sur une surface carr\u00e9e ou rectangulaire. On appuie sur le bois avec un presse-m\u00e8tre et on mesure combien le bois r\u00e9siste \u00e0 la d\u00e9formation.<br>Plus la valeur Monnin est grande, plus le bois est ferme et solide.<br>Elle est particuli\u00e8rement utile pour les bois destin\u00e9s \u00e0 la construction, le sciage ou les structures portantes.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Compos\u00e9 ph\u00e9nolique<\/td><td class=\"has-text-align-left\" data-align=\"left\">Substance naturelle pr\u00e9sente dans le bois et l\u2019\u00e9corce, appartenant \u00e0 la famille des mol\u00e9cules aromatiques, qui joue un r\u00f4le dans la protection de l\u2019arbre contre les champignons, bact\u00e9ries et insectes.<br>Exemples courants : tanins, lignine.<br>Synonyme : Polyph\u00e9nol<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Polyph\u00e9nol<\/td><td class=\"has-text-align-left\" data-align=\"left\">Substance naturelle pr\u00e9sente dans le bois et l\u2019\u00e9corce, appartenant \u00e0 la famille des mol\u00e9cules aromatiques, qui joue un r\u00f4le dans la protection de l\u2019arbre contre les champignons, bact\u00e9ries et insectes.<br>Exemples courants : tanins, lignine.<br>Synonyme : compos\u00e9 ph\u00e9nolique<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Phototropisme<\/td><td class=\"has-text-align-left\" data-align=\"left\">Orientation de la croissance des organes v\u00e9g\u00e9taux en r\u00e9ponse \u00e0 la lumi\u00e8re.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Phytoncide<\/td><td class=\"has-text-align-left\" data-align=\"left\">Substance produite par certaines plantes ayant des propri\u00e9t\u00e9s antimicrobiennes ou antifongiques.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Plastique (essence)<\/td><td class=\"has-text-align-left\" data-align=\"left\">Essence pr\u00e9sentant une forte capacit\u00e9 d\u2019adaptation \u00e0 des conditions stationnelles vari\u00e9es.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Retrait entre 40 et 60% d&rsquo;humidit\u00e9 relative<\/td><td class=\"has-text-align-left\" data-align=\"left\">Variation dimensionnelle du bois en conditions int\u00e9rieures.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Retrait entre 60 et 90% d&rsquo;humidit\u00e9 relative<\/td><td class=\"has-text-align-left\" data-align=\"left\">Variation dimensionnelle du bois en conditions ext\u00e9rieures, li\u00e9e aux<br>variations hygrom\u00e9triques.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Retrait longitudinal<\/td><td class=\"has-text-align-left\" data-align=\"left\">Variation dimensionnelle du bois dans le sens des fibres lors du s\u00e9chage. Ce retrait est tr\u00e8s faible par rapport aux autres directions.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Retrait radial<\/td><td class=\"has-text-align-left\" data-align=\"left\">Diminution dimensionnelle du bois perpendiculairement aux cernes, de la moelle vers l\u2019\u00e9corce, lors du s\u00e9chage.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Rt \/ Rr<\/td><td class=\"has-text-align-left\" data-align=\"left\">Rapport entre le retrait tangentiel et le retrait radial, indicateur de stabilit\u00e9 dimensionnelle.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Surcim\u00e9<\/td><td class=\"has-text-align-left\" data-align=\"left\">Se dit d\u2019un arbre dont la cime est partiellement ou totalement domin\u00e9e par celles d\u2019arbres voisins plus \u00e9lev\u00e9s, recevant une lumi\u00e8re lat\u00e9rale ou r\u00e9duite, ce qui peut limiter sa croissance en hauteur et en diam\u00e8tre.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Tabulaire (port)<\/td><td class=\"has-text-align-left\" data-align=\"left\">Port caract\u00e9ris\u00e9 par une cime large, \u00e9tal\u00e9e et aplatie.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Thermophile<\/td><td class=\"has-text-align-left\" data-align=\"left\">Esp\u00e8ce affectionnant les milieux chauds et les fortes sommes de temp\u00e9rature.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Zoochore<\/td><td class=\"has-text-align-left\" data-align=\"left\">Mode de diss\u00e9mination des graines assur\u00e9 par les animaux.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Mucron<\/td><td class=\"has-text-align-left\" data-align=\"left\">Petite pointe raide, courte et abrupte qui termine l&rsquo;extr\u00e9mit\u00e9 d&rsquo;un<br>organe v\u00e9g\u00e9tal, le plus souvent une feuille, un s\u00e9pale ou une bract\u00e9e.<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Les fiches essences de la SRFB Forte de son savoir-faire et de son expertise, la SRFB a rassembl\u00e9 au fil des ann\u00e9es une grande quantit\u00e9 d\u2019informations sur de nombreuses essences foresti\u00e8res, qu\u2019elles soient bien connues ou plus confidentielles.&nbsp;Ces connaissances incluent notamment des essences test\u00e9es dans le cadre du projet&nbsp;Trees&nbsp;for Future. 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