{"id":51828,"date":"2017-09-18T23:05:25","date_gmt":"2017-09-18T16:05:25","guid":{"rendered":"https:\/\/www.forestsnews.org\/?p=51828"},"modified":"2017-09-27T23:15:39","modified_gmt":"2017-09-27T16:15:39","slug":"la-rarefaction-des-produits-forestiers-et-ses-causes","status":"publish","type":"post","link":"https:\/\/www.forestsnews.org\/fr\/51828\/la-rarefaction-des-produits-forestiers-et-ses-causes","title":{"rendered":"La rar\u00e9faction des produits forestiers et ses causes"},"content":{"rendered":"<p>Dans les pays en d\u00e9veloppement, les petits exploitants et les communaut\u00e9s rurales tirent environ un quart de leurs revenus de la for\u00eat environnante. Mais une<a href=\"https:\/\/www.cifor.org\/library\/6326\/why-do-forest-products-become-less-available-a-pan-tropical-comparison-of-drivers-of-forest-resource-degradation\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"> \u00e9tude <\/a>r\u00e9cente indique que ces ressources se rar\u00e9fient et que leur volume est en diminution.<\/p>\n<p>La hausse de la consommation des produits forestiers et la d\u00e9forestation sont les principales raisons de cette rar\u00e9faction, ce qui fait peser une menace sur la ressource et les moyens de subsistance des populations, selon cette nouvelle \u00e9tude.<\/p>\n<p>\u00ab Nous observons une tendance \u00e0 la d\u00e9gradation de la ressource au fil du temps \u00bb, affirme Sven Wunder, \u00e9conomiste s\u00e9nior au <a href=\"https:\/\/www.cifor.org\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Centre de recherche foresti\u00e8re internationale (CIFOR)<\/a>. Wunder a analys\u00e9 les donn\u00e9es du <a href=\"http:\/\/www1.cifor.org\/pen\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">R\u00e9seau Pauvret\u00e9 et Environnement (PEN) du CIFOR<\/a>, qui, depuis le lancement de son \u00e9tude pantropicale en 2004, a recueilli des informations aupr\u00e8s de plus de 8 000 m\u00e9nages dans 24 pays.<\/p>\n<p>\u00ab J\u2019ai \u00e9t\u00e9 surpris de voir que tant de villages, soit neuf sur dix, montraient des signes d\u2019appauvrissement de la ressource en cinq ans seulement \u00bb, d\u00e9clare Wunder.<\/p>\n<p>Les r\u00e9sultats r\u00e9v\u00e8lent qu\u2019il est n\u00e9cessaire de s\u2019int\u00e9resser de plus pr\u00e8s \u00e0 la p\u00e9rennit\u00e9 des pratiques de gestion foresti\u00e8re des communaut\u00e9s ainsi qu\u2019aux futurs impacts de la d\u00e9gradation des for\u00eats.<\/p>\n<p>\u00ab Puisque ces communaut\u00e9s vivent directement gr\u00e2ce aux ressources foresti\u00e8res, les cons\u00e9quences peuvent \u00eatre pr\u00e9judiciables \u00bb, souligne la principale auteure de cette \u00e9tude, Kathleen Hermans-Neumann de l\u2019UFZ-Helmholtz Center for Environmental Research de Leipzig en Allemagne. \u00ab Si les ressources naturelles sont en voie d\u2019\u00e9puisement, il s\u2019av\u00e8re difficile de trouver des moyens de subsistance sur le plan local. \u00bb<\/p>\n<p><strong>DES RESSOURCES PLUS RARES<\/strong><\/p>\n<p>L\u2019\u00e9tude a port\u00e9 sur l\u2019exploitation de six types de ressources foresti\u00e8res : bois de chauffage et charbon de bois, bois de construction et d\u2019industrie, plantes alimentaires, plantes m\u00e9dicinales, fourrage, et autres, dans 233 villages des zones tropicales et subtropicales d\u2019Asie, d\u2019Afrique et d\u2019Am\u00e9rique latine.<\/p>\n<p>Si la plupart des \u00e9tudes de l\u2019utilisation des ressources villageoises ont \u00e9t\u00e9 men\u00e9es localement, la base de donn\u00e9es du R\u00e9seau PEN permet aux chercheurs d\u2019examiner les tendances pantropicales, selon Hermans-Neumann.<\/p>\n<p>Dans le cadre des enqu\u00eates du PEN, qui ont \u00e9t\u00e9 r\u00e9alis\u00e9es entre 2005 et 2010, les villageois \u00e9taient interrog\u00e9s \u00e0 savoir si la disponibilit\u00e9 de ces ressources foresti\u00e8res cl\u00e9s avait chang\u00e9 au cours des cinq derni\u00e8res ann\u00e9es, et si oui, quelles \u00e9taient les raisons de ce changement.<\/p>\n<p>Les trois ressources foresti\u00e8res les plus importantes mentionn\u00e9es par les villageois \u00e9taient le bois de chauffage et le charbon de bois, le bois de construction et d\u2019industrie, et les plantes alimentaires. Le fourrage et les plantes m\u00e9dicinales \u00e9taient moins cit\u00e9s, bien que 75 % des villageois aient signal\u00e9 exploiter au moins l\u2019une ou l\u2019autre de ces ressources.<\/p>\n<p>Globalement, dans 209 villages sur 233, les habitants ont d\u00e9clar\u00e9 avoir observ\u00e9 une diminution des ressources concernant au moins un produit forestier, tandis que dans 87 villages il a \u00e9t\u00e9 constat\u00e9 que l\u2019ensemble des produits forestiers \u00e9tait moins abondant que par le pass\u00e9.<\/p>\n<p>En revanche, dans 89 villages, au moins un produit forestier a \u00e9t\u00e9 signal\u00e9 en plus grande quantit\u00e9. Dans certains cas, il s\u2019agissait de bois de chauffage et l\u2019augmentation \u00e9tait due au d\u00e9boisement et non pas n\u00e9cessairement \u00e0 une gestion plus durable.<\/p>\n<p>Les deux principales causes du d\u00e9clin des ressources foresti\u00e8res \u00e9taient une hausse de la consommation (en grande partie suite \u00e0 l\u2019accroissement de la population villageoise) et la destruction de la couverture foresti\u00e8re. La croissance de la population \u00e9tait attribu\u00e9e \u00e0 l\u2019immigration et \u00e0 un taux de natalit\u00e9 \u00e9lev\u00e9.<\/p>\n<div class='short-quote'>\n\t\t\t<blockquote>\n\t\t\t\t<p><\/p>\n\t\t\t\t<footer>\n\t\t\t\t\t<cite title='Source Title'><\/cite>\n\t\t\t\t<\/footer>\n\t\t\t<\/blockquote>\n\t\t<\/div>\n<p>Les villages qui enregistraient une augmentation de la quantit\u00e9 de produits forestiers disponibles avaient un taux de croissance de population plus faible et signalaient une exploitation moins importante des ressources foresti\u00e8res. Ces r\u00e9sultats viennent \u00e0 l\u2019appui de l\u2019id\u00e9e \u00ab n\u00e9o-malthusienne \u00bb qu\u2019une population en augmentation conduit \u00e0 la surexploitation et \u00e0 un d\u00e9clin des ressources, notamment alimentaires. Cette th\u00e9orie porte le nom de Thomas Robert Malthus, qui en est \u00e0 l\u2019origine \u00e0 la fin du XVIII<sup>e<\/sup> si\u00e8cle.<\/p>\n<p>Selon un autre point de vue, appel\u00e9 \u00ab n\u00e9o-Boserupien \u00bb d\u2019apr\u00e8s l\u2019\u00e9conomiste danoise Ester Boserup, les personnes r\u00e9agissent \u00e0 la rar\u00e9faction des ressources en cherchant de meilleurs modes de gestion.<\/p>\n<p><strong>LA GESTION DES RESSOURCES<\/strong><\/p>\n<p>Bien que l\u2019\u00e9tude semble renforcer la th\u00e9orie n\u00e9o-malthusienne, ses r\u00e9sultats montrent que le r\u00e9gime foncier dans les for\u00eats peut jouer un r\u00f4le dans le ralentissement de la d\u00e9gradation des ressources foresti\u00e8res. L\u00e0 o\u00f9 au moins un tiers de la for\u00eat appartenait \u00e0 la communaut\u00e9, on notait une diminution moins importante de la quantit\u00e9 des produits forestiers.<\/p>\n<p>Les populations peuvent \u00eatre motiv\u00e9es \u00e0 changer leurs pratiques de gestion de leurs for\u00eats lorsqu\u2019elles constatent un d\u00e9clin du volume des produits forestiers, remarquent les auteurs.<\/p>\n<p>\u00ab La transition entre la for\u00eat en acc\u00e8s libre et la for\u00eat communautaire g\u00e9r\u00e9e se produit souvent quand la d\u00e9gradation de la ressource prend de l\u2019ampleur \u00bb, \u00e9crivent-ils.<\/p>\n<p>Les auteurs pr\u00e9viennent que les donn\u00e9es du PEN sont fond\u00e9es sur les perceptions des populations par rapport aux changements qui touchent leurs for\u00eats, plut\u00f4t que sur des mesures scientifiques des stocks de ressources. Cependant, Wunder affirme que la coh\u00e9rence des r\u00e9sultats dans un si grand nombre de villages indique que ces perceptions sont probablement valables.<\/p>\n<p>N\u00e9anmoins, il ajoute que des \u00e9tudes comparatives avec mesures sur le terrain de la qualit\u00e9 des ressources foresti\u00e8res pourraient livrer des enseignements suppl\u00e9mentaires sur l\u2019ampleur de la d\u00e9gradation, ses moteurs et l\u2019impact sur les moyens de subsistance des habitants.<\/p>\n<p>Hermans-Neumann explique qu\u2019elle aimerait examiner de plus pr\u00e8s l\u2019\u00e9volution de la population, et surtout \u00ab pourquoi on constate une immigration et dans quelle mesure l\u2019utilisation des ressources par les nouveaux arrivants est diff\u00e9rente de celle de la population locale. \u00bb<\/p>\n<p>En attendant, les conclusions de cette \u00e9tude peuvent tirer la sonnette d\u2019alarme pour les d\u00e9cideurs et les gestionnaires des for\u00eats qui id\u00e9alisent peut-\u00eatre la situation, imaginant que les petits exploitants et les communaut\u00e9s vivent en harmonie avec leurs ressources naturelles sans les \u00e9puiser.<\/p>\n<p>\u00ab Apparemment, l\u2019usage que font globalement les communaut\u00e9s locales des for\u00eats et de leurs produits n\u2019est pas enti\u00e8rement durable \u00bb, pr\u00e9cise Hermans-Neumann. \u00ab La gestion foresti\u00e8re communautaire peut parfois rem\u00e9dier avec succ\u00e8s \u00e0 cela, mais ce n\u2019est pas toujours le cas. Maintenant que nous en savons davantage sur les moteurs de la d\u00e9gradation, nous sommes mieux en mesure de nous atteler aux priorit\u00e9s en vue d\u2019une gestion am\u00e9lior\u00e9e. \u00bb<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans les pays en d\u00e9veloppement, les petits exploitants et les communaut\u00e9s rurales tirent environ un quart de leurs revenus de la for\u00eat environnante. Mais une \u00e9tude r\u00e9cente indique que ces ressources se rar\u00e9fient et que leur volume est en diminution. La hausse de la consommation des produits forestiers et la d\u00e9forestation sont les principales raisons [&hellip;]<\/p>\n","protected":false},"author":84,"featured_media":51829,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1072],"tags":[],"language":[2170],"location":[12217],"tag-bahasa":[],"tag-espanol":[],"tag-francais":[],"type-espanol":[],"type-bahasa":[],"type-english":[],"type-francais":[3001],"coauthors":[831],"class_list":["post-51828","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landscapes","language-francais","location-global","type-francais-a-la-une"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>La rar\u00e9faction des produits forestiers et ses causes - Landscape Alliance Forests News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.forestsnews.org\/fr\/51828\/la-rarefaction-des-produits-forestiers-et-ses-causes\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La rar\u00e9faction des produits forestiers et ses causes\" \/>\n<meta property=\"og:description\" content=\"Dans les pays en d\u00e9veloppement, les petits exploitants et les communaut\u00e9s rurales tirent environ un quart de leurs revenus de la for\u00eat environnante. 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La hausse de la consommation des produits forestiers et la d\u00e9forestation sont les principales raisons [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.forestsnews.org\/fr\/51828\/la-rarefaction-des-produits-forestiers-et-ses-causes\" \/>\n<meta property=\"og:site_name\" content=\"Landscape Alliance Forests News\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/CIFORICRAF\" \/>\n<meta property=\"article:published_time\" content=\"2017-09-18T16:05:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-09-27T16:15:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2017\/09\/36147260765_9c58858164_k.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1362\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Barbara Fraser\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@barbara_fraser\" \/>\n<meta name=\"twitter:site\" content=\"@CIFOR_ICRAF\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/fr\\\/51828\\\/la-rarefaction-des-produits-forestiers-et-ses-causes#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/fr\\\/51828\\\/la-rarefaction-des-produits-forestiers-et-ses-causes\"},\"author\":{\"name\":\"Barbara Fraser\",\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/fr#\\\/schema\\\/person\\\/3f84c53b70c9b8fa7a5689aaa3c5076f\"},\"headline\":\"La rar\u00e9faction des produits forestiers et ses causes\",\"datePublished\":\"2017-09-18T16:05:25+00:00\",\"dateModified\":\"2017-09-27T16:15:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/fr\\\/51828\\\/la-rarefaction-des-produits-forestiers-et-ses-causes\"},\"wordCount\":1160,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/fr#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/fr\\\/51828\\\/la-rarefaction-des-produits-forestiers-et-ses-causes#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.forestsnews.org\\\/wp-content\\\/uploads\\\/2017\\\/09\\\/36147260765_9c58858164_k.jpg\",\"articleSection\":[\"Landscapes\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.forestsnews.org\\\/fr\\\/51828\\\/la-rarefaction-des-produits-forestiers-et-ses-causes#respond\"]}],\"copyrightYear\":\"2017\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.forestsnews.org\\\/fr\\\/51828\\\/la-rarefaction-des-produits-forestiers-et-ses-causes\",\"url\":\"https:\\\/\\\/www.forestsnews.org\\\/fr\\\/51828\\\/la-rarefaction-des-produits-forestiers-et-ses-causes\",\"name\":\"La rar\u00e9faction des produits forestiers et ses causes - 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