{"id":163835,"date":"2026-10-01T09:30:00","date_gmt":"2026-10-01T02:30:00","guid":{"rendered":"https:\/\/www.forestsnews.org\/163835\/africa-cities-urban-forestry-trees"},"modified":"2026-10-01T22:04:27","modified_gmt":"2026-10-01T15:04:27","slug":"villes-africaines-foresterie-urbaines-arbres","status":"publish","type":"post","link":"https:\/\/www.forestsnews.org\/fr\/163835\/villes-africaines-foresterie-urbaines-arbres","title":{"rendered":"Pourquoi les villes africaines commencent \u00e0 planter et entretenir des arbres"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Lorsqu\u2019une autoroute \u00e0 quatre voies a \u00e9t\u00e9 construite pr\u00e8s du domicile de <a href=\"https:\/\/www.forestsnews.org\/author\/cwatson\" target=\"_blank\" rel=\"noreferrer noopener\">Cathy Watson<\/a>, conseill\u00e8re principale de Landscape Alliance, \u00e0 Nairobi en 2019, la terre rouge laiss\u00e9e \u00e0 nu sur les emprises routi\u00e8res l\u2019a interpell\u00e9e. <em>\u00ab Il n\u2019y avait aucune plantation : pas m\u00eame un brin d\u2019herbe, seulement du b\u00e9ton et de la boue, avec des rigoles qui se formaient \u00bb<\/em>, raconte-t-elle. Elle savait que ces rigoles annon\u00e7aient de s\u00e9rieux probl\u00e8mes dans une ville o\u00f9, \u00e0 chaque saison des pluies, des vies sont perdues, des routes et des ponts endommag\u00e9s et des familles d\u00e9plac\u00e9es.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u00ab C\u2019\u00e9tait une formidable occasion de planter des arbres, d\u2019exp\u00e9rimenter diff\u00e9rentes esp\u00e8ces, de cr\u00e9er des emplois et de faire \u00e9merger quelque chose de magnifique pour les populations et la nature \u00bb<\/em>, explique-t-elle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Watson a obtenu l\u2019autorisation de la Kenya Urban Roads Authority et, en janvier 2020, a r\u00e9uni son \u00e9quipe pour commencer \u00e0 planter des arbres sur les emprises de la nouvelle route, la Waiyaki Way-Red Hill Link Road. Un forestier senior \u00e0 la retraite a \u00e9t\u00e9 recrut\u00e9 pour planifier la disposition des arbres, tandis qu\u2019une \u00e9quipe d\u2019ouvriers a pr\u00e9par\u00e9 les sols et assur\u00e9 l\u2019entretien du site : arrosage, tuteurage, paillage, d\u00e9sherbage et apport d\u2019amendements organiques tels que le fumier et le paillis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Six ans et demi plus tard, le tron\u00e7on \u00ab trait\u00e9 \u00bb compte environ 2 500 arbres appartenant \u00e0 163 esp\u00e8ces : 142 esp\u00e8ces indig\u00e8nes, dont 21 rares et neuf menac\u00e9es, ainsi que 21 esp\u00e8ces exotiques, pour la plupart issues de r\u00e9g\u00e9n\u00e9rations naturelles \u00e0 partir de graines apport\u00e9es par le vent ou contenues dans le paillis utilis\u00e9. Des arbustes, des fleurs et des gramin\u00e9es compl\u00e8tent \u00e9galement la v\u00e9g\u00e9tation.<\/p>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-baaca9a6 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"2560\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-scaled.jpg\" alt=\"Bare red-soil slopes beside a newly constructed paved road in October 2019.\" class=\"wp-image-163367\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-scaled.jpg 1920w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-300x400.jpg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-311x415.jpg 311w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-768x1024.jpg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-135x180.jpg 135w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-1152x1536.jpg 1152w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_6014-1536x2048.jpg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Avant la restauration, les talus en bordure de route \u00e9taient en grande partie constitu\u00e9s de sol nu en octobre 2019. Photo : Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"2560\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-scaled.jpeg\" alt=\"A tree-covered roadside slope beside a paved road, with diverse vegetation and undergrowth.\" class=\"wp-image-163372\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-scaled.jpeg 1920w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-300x400.jpeg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-311x415.jpeg 311w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-768x1024.jpeg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-135x180.jpeg 135w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-1152x1536.jpeg 1152w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0555-1536x2048.jpeg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Six ans apr\u00e8s la restauration, les talus sont recouverts d\u2019une v\u00e9g\u00e9tation diversifi\u00e9e compos\u00e9e d\u2019arbres et de sous-bois, en septembre 2026. Photo : Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u00ab J\u2019ai \u00e9t\u00e9 stup\u00e9fait par la transformation \u00bb<\/em>, t\u00e9moigne <a href=\"https:\/\/www.landscapealliance.org\/research-staff\/zakayo-kinyanjui\/\" target=\"_blank\" rel=\"noreferrer noopener\">Zakayo Kinyanjui<\/a>, physiologiste des semences \u00e0 Landscape Alliance, qui a particip\u00e9 \u00e0 plusieurs des premi\u00e8res op\u00e9rations de plantation d\u2019arbres le long de la voie de liaison et qui s\u2019y est rendu \u00e0 nouveau il y a quelques semaines. Le corridor fournit d\u00e9sormais toute l\u2019ann\u00e9e de la nourriture et un habitat \u00e0 un grand nombre d\u2019oiseaux et d\u2019autres animaux qui le fr\u00e9quentent, observe-t-il.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Et l\u2019endroit n\u2019est plus isol\u00e9 ni d\u00e9sert. Les habitants ont investi les lieux, vendant des meubles, des paniers et d\u2019autres produits sous les arbres. Deux kiosques vendent du th\u00e9 et des chapatis et r\u00e9alisent une activit\u00e9 importante aupr\u00e8s des chauffeurs Uber, des agents de s\u00e9curit\u00e9 et des conducteurs de <em>boda boda<\/em> [motos-taxis]. <em>\u00ab Les vendeurs et les pi\u00e9tons profitent de cet espace vert. Il est s\u00fbr, et les arbres les prot\u00e8gent du soleil et de la pluie \u00bb<\/em>, explique Watson.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une grande partie de Nairobi est extr\u00eamement dens\u00e9ment peupl\u00e9e et 60 % de ses habitants vivent dans des bidonvilles. Les espaces publics ext\u00e9rieurs arbor\u00e9s ont donc une valeur consid\u00e9rable, souligne <a href=\"https:\/\/www.landscapealliance.org\/research-staff\/david-lelei\/\" target=\"_blank\" rel=\"noreferrer noopener\">David Lelei<\/a>, sp\u00e9cialiste des sols \u00e0 Landscape Alliance. <em>\u00ab En visitant ces espaces pendant la journ\u00e9e, on voit de nombreuses personnes autour des arbres : elles dorment, lisent, se d\u00e9tendent, pique-niquent, se rencontrent et prient. \u00bb<\/em><\/p>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-baaca9a6 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2096\" height=\"2560\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-scaled.jpeg\" alt=\"A young man in a reflective vest holds a bottle of water beside newly planted trees protected by green mesh along a roadside.\" class=\"wp-image-163382\" style=\"aspect-ratio:3\/4;object-fit:cover\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-scaled.jpeg 2096w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-328x400.jpeg 328w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-340x415.jpeg 340w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-768x938.jpeg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-147x180.jpeg 147w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-1258x1536.jpeg 1258w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_7028-1677x2048.jpeg 1677w\" sizes=\"auto, (max-width: 2096px) 100vw, 2096px\" \/><figcaption class=\"wp-element-caption\">Un jeune issu du bidonville de Kibera est r\u00e9mun\u00e9r\u00e9 pour entretenir les arbres plant\u00e9s par Mazingira Yetu le long de Lusaka Road. Il tient une bouteille contenant suffisamment d\u2019eau pour irriguer un arbre pendant plusieurs jours. Photo : Sam Dindi.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"2560\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-scaled.jpeg\" alt=\"People work at furniture stalls beneath mature trees along a red-soil roadside, with vehicles and other roadside businesses visible in the background.\" class=\"wp-image-163468\" style=\"aspect-ratio:3\/4;object-fit:cover\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-scaled.jpeg 1920w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-300x400.jpeg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-311x415.jpeg 311w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-768x1024.jpeg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-135x180.jpeg 135w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-1152x1536.jpeg 1152w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0557-1536x2048.jpeg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Des fabricants de meubles travaillent sous les arbres le long de la voie de liaison de Nairobi. Photo : Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\n<figure class=\"wp-block-image alignwide size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1728\" height=\"1086\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Struggling-to-apply-manure.png\" alt=\"A worker in a high-visibility vest carries a sack of manure through vegetation planted on a landscaped slope beside the Wayaki Way Link Road in Nairobi.\" class=\"wp-image-163387\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Struggling-to-apply-manure.png 1728w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Struggling-to-apply-manure-566x356.png 566w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Struggling-to-apply-manure-660x415.png 660w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Struggling-to-apply-manure-768x483.png 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Struggling-to-apply-manure-220x138.png 220w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Struggling-to-apply-manure-1536x965.png 1536w\" sizes=\"auto, (max-width: 1728px) 100vw, 1728px\" \/><figcaption class=\"wp-element-caption\">Un ouvrier apporte du fumier aux arbres plant\u00e9s sur un rond-point le long de la voie de liaison \u00e0 Nairobi. Photo: Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Alors que la plupart des travaux de recherche, des investissements et des actions de restauration foresti\u00e8re se concentrent sur les zones rurales, les donn\u00e9es montrant les multiples b\u00e9n\u00e9fices des arbres en ville sont de plus en plus nombreuses. Les espaces verts contribuent \u00e0 la sant\u00e9 physique et mentale et r\u00e9duisent la pollution atmosph\u00e9rique et sonore. Ils am\u00e9liorent \u00e9galement la structure des sols et r\u00e9duisent la s\u00e9dimentation dans les cours d\u2019eau voisins, une fonction essentielle \u00e0 Nairobi. <em>\u00ab Alors que nous nous pr\u00e9parons aux pluies li\u00e9es \u00e0 El Ni\u00f1o, avec de nombreux syst\u00e8mes de drainage obstru\u00e9s, une catastrophe est en train de se pr\u00e9parer \u00bb<\/em>, estime Lelei. <em>\u00ab Mais planter des arbres et restaurer l\u2019environnement le long de nos routes urbaines permet de r\u00e9duire ces probl\u00e8mes gr\u00e2ce \u00e0 une meilleure recharge des nappes souterraines. \u00bb<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u00ab La foresterie urbaine a souvent \u00e9t\u00e9 rel\u00e9gu\u00e9e au second plan dans les politiques de d\u00e9veloppement \u00bb<\/em>, explique Watson. <em>\u00ab Les gens pensaient que les arbres n\u2019\u00e9taient pas synonymes de progr\u00e8s : ce qui comptait, c\u2019\u00e9taient les b\u00e2timents. Mais aujourd\u2019hui, beaucoup de personnes sont tr\u00e8s pr\u00e9occup\u00e9es : lorsqu\u2019un grand arbre est abattu \u00e0 Nairobi, l\u2019information se retrouve partout sur Internet. \u00bb<\/em><\/p>\n\n\n\n<details class=\"wp-block-details\"><summary><em><code><mark style=\"background-color:rgba(0, 0, 0, 0);color:#87d552\" class=\"has-inline-color is-layout-flow wp-block-details-is-layout-flow\"><strong>QU\u00c9SACO?<\/strong> La for\u00eat urbaine, une d\u00e9finition<\/mark><\/code><\/em><\/summary>\n<h4 id=\"h-urban-forests-nbsp-can-be-defined-as-networks-or-systems-comprising-all-woodlands-groups-of-trees-and-individual-trees-located-in-urban-and-peri-urban-areas-they-include-therefore-forests-street-trees-trees-in-parks-and-gardens-and-trees-in-derelict-corners-urban-forests-are-the-backbone-of-the-green-infrastructure-bridging-rural-and-urban-areas-and-ameliorating-a-city-s-environmental-footprint-source-fao\" class=\"wp-block-heading\"><strong>Urban forests<\/strong>&nbsp;can be defined as networks or systems comprising all woodlands, groups of trees, and individual trees located in urban and peri-urban areas; they include, therefore, forests, street trees, trees in parks and gardens, and trees in derelict corners. Urban forests are the backbone of the green infrastructure, bridging rural and urban areas and ameliorating a city\u2019s environmental footprint. (Source: <a href=\"https:\/\/www.fao.org\/forestry-fao\/urbanforestry\/87025\/en\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">FAO<\/a>)<\/h4>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\">Le projet de la Waiyaki Way-Red Hill Link Road constitue une source d\u2019apprentissage pour d\u2019autres groupes. Dans toute la ville, des projets de restauration se connectent et \u00e9changent sur le choix des esp\u00e8ces, les options d\u2019entretien, les risques pour la s\u00e9curit\u00e9 et bien d\u2019autres aspects. Sam Dindi, directeur de l\u2019organisation environnementale communautaire \u00e0 but non lucratif Mazingira Yetu, m\u00e8ne un projet similaire dans la zone industrielle de la ville. Celui-ci a jusqu\u2019\u00e0 pr\u00e9sent permis de planter 250 arbres appartenant \u00e0 30 esp\u00e8ces indig\u00e8nes. <em>\u00ab Ce que nous avons retenu du projet de la voie de liaison, c\u2019est le mod\u00e8le de r\u00e9mun\u00e9ration des ouvriers occasionnels et la mani\u00e8re dont les travailleurs sont accompagn\u00e9s pour prendre soin des arbres. \u00bb<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les scientifiques de <a href=\"https:\/\/www.landscapealliance.org\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Landscape Alliance<\/a> utilisent l\u2019<a href=\"https:\/\/worldagroforestry.org\/output\/regreening-africa-app\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">application Regreening<\/a>, un outil de science citoyenne con\u00e7u pour suivre les efforts de restauration, afin de surveiller la survie des arbres, la diversit\u00e9 des esp\u00e8ces et les progr\u00e8s de la restauration au fil du temps le long de la voie de contournement, explique <a href=\"https:\/\/www.landscapealliance.org\/research-staff\/leigh-ann-winowiecki\/\" target=\"_blank\" rel=\"noreferrer noopener\">Leigh Winowiecki<\/a>, responsable mondiale de la recherche sur la sant\u00e9 des sols et des terres.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nairobi n\u2019est pas la seule ville africaine o\u00f9 des militants et des communaut\u00e9s se tournent vers les \u00ab infrastructures vertes \u00bb. Sur tout le continent, des populations prennent elles-m\u00eames en main le reverdissement urbain. Certaines de leurs approches sont pr\u00e9sent\u00e9es dans le premier ouvrage consacr\u00e9 aux for\u00eats urbaines d\u2019Afrique, <a href=\"https:\/\/www.iufro.org\/publication\/urban-forests-and-green-spaces-in-africa-case-studies-and-lessons-from-across-the-continent\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Urban Forests and Green Spaces in Africa : Case Studies from Across the Continent<\/em><\/a>, dirig\u00e9 par Watson. Le livre pr\u00e9sente 34 r\u00e9cits provenant de 30 villes de 14 pays.<\/p>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-baaca9a6 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"2560\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-scaled.jpeg\" alt=\"Close-up of a tree trunk with large sections of bark stripped away, surrounded by grass and other roadside vegetation.\" class=\"wp-image-163394\" style=\"aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-scaled.jpeg 1920w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-300x400.jpeg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-311x415.jpeg 311w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-768x1024.jpeg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-135x180.jpeg 135w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-1152x1536.jpeg 1152w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8813-1536x2048.jpeg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Un arbre de <em>Zanthoxylum<\/em> spp. fortement \u00e9corc\u00e9 le long de la voie de liaison de Nairobi montre que les arbres restent vuln\u00e9rables \u00e0 l\u2019exploitation, m\u00eame lorsque les zones plant\u00e9es se r\u00e9g\u00e9n\u00e8rent. Photo : Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1920\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-scaled.jpeg\" alt=\"Dense vegetation including young trees, shrubs and grasses growing on a steep roadside slope beside Nairobi\u2019s link road.\" class=\"wp-image-163399\" style=\"aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-scaled.jpeg 2560w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-533x400.jpeg 533w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-553x415.jpeg 553w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-768x576.jpeg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-220x165.jpeg 220w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-1536x1152.jpeg 1536w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_8463-2048x1536.jpeg 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><figcaption class=\"wp-element-caption\">Le talus plant\u00e9 le long de la voie de liaison de Nairobi \u00e9volue vers un ensemble diversifi\u00e9 d\u2019arbres, d\u2019arbustes et de gramin\u00e9es. Photo : Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"2560\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-scaled.jpeg\" alt=\"Young trees and other vegetation growing on a steep roadside slope beside Nairobi\u2019s link road, with a pedestrian walking near the road above.\" class=\"wp-image-163405\" style=\"aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-scaled.jpeg 1920w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-300x400.jpeg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-311x415.jpeg 311w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-768x1024.jpeg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-135x180.jpeg 135w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-1152x1536.jpeg 1152w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_3873-1536x2048.jpeg 1536w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">Plant\u00e9 en mai 2024, ce talus en bordure de route le long de la voie de liaison de Nairobi abrite d\u00e9j\u00e0 de jeunes arbres et d\u2019autres v\u00e9g\u00e9taux. Le talus abrupt, \u00e9quip\u00e9 de barri\u00e8res, est moins susceptible d\u2019\u00eatre p\u00e2tur\u00e9 ou construit. Photo : Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30)\">\n<figure class=\"wp-block-image alignwide size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1920\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-scaled.jpeg\" alt=\"Three men sit on wooden benches beneath mature trees in a planted roadside space along Nairobi\u2019s link road, with the road visible behind them.\" class=\"wp-image-163413\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-scaled.jpeg 2560w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-533x400.jpeg 533w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-553x415.jpeg 553w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-768x576.jpeg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-220x165.jpeg 220w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-1536x1152.jpeg 1536w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_IMG_0551-2048x1536.jpeg 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><figcaption class=\"wp-element-caption\">Des habitants s\u2019assoient et discutent sous les arbres plant\u00e9s le long de la voie de liaison de Nairobi. Photo : Cathy Watson \/ Landscape Alliance.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<h2 id=\"h-etude-de-cas-1-harare-qui-beneficie-des-arbres-d-une-ville\" class=\"wp-block-heading\"><strong><strong>\u00c9tude de cas 1 : Harare \u2014 Qui b\u00e9n\u00e9ficie des arbres d\u2019une ville ?<\/strong><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les b\u00e9n\u00e9fices des espaces verts urbains sont souvent r\u00e9partis de mani\u00e8re in\u00e9gale. Pour Tafadzwa Gwini, innovateur dans le domaine de l\u2019action climatique et organisateur communautaire au Zimbabwe, cette r\u00e9alit\u00e9 est devenue \u00e9vidente lorsqu\u2019il a commenc\u00e9 \u00e0 faire quotidiennement le trajet entre le quartier populaire et dens\u00e9ment peupl\u00e9 de Kuwadzana et l\u2019Universit\u00e9 du Zimbabwe, situ\u00e9e dans le quartier r\u00e9sidentiel ais\u00e9 et peu dense de Mt Pleasant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u00ab Dans mon quartier, il faisait chaud et l\u2019air \u00e9tait poussi\u00e9reux, mais d\u00e8s que j\u2019arrivais \u00e0 Mt Pleasant, il faisait soudainement plus frais et l\u2019air \u00e9tait incroyablement pur \u00bb, <\/em>raconte-t-il.<em> \u00ab J\u2019ai eu le sentiment que les populations des quartiers \u00e0 faibles revenus \u00e9taient confront\u00e9es \u00e0 une injustice environnementale. Les arbres et les autres espaces verts, comme les parcs, sont des infrastructures essentielles de sant\u00e9 publique. \u00bb<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En 2020, Gwini a donc d\u00e9cid\u00e9 de diriger des actions de restauration dans les quartiers populaires de Harare. Au cours des six derni\u00e8res ann\u00e9es, le projet qu\u2019il appelle d\u00e9sormais Green the Ghetto a plant\u00e9 et entretenu plus de 15 000 arbres, cr\u00e9\u00e9 des parcs r\u00e9cr\u00e9atifs communautaires et organis\u00e9 une centaine d\u2019activit\u00e9s de sensibilisation utilisant la danse, la musique, la po\u00e9sie, le th\u00e9\u00e2tre et l\u2019art de rue. En septembre de cette ann\u00e9e, le projet a remport\u00e9 le prix du meilleur nouveau projet lors du salon national du jardinage gr\u00e2ce \u00e0 son concept de \u00ab jardinage en seaux \u00bb, qui permet aux personnes n\u2019ayant pas acc\u00e8s \u00e0 la terre de cultiver des aliments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le projet, qui ne plante que des esp\u00e8ces indig\u00e8nes, fait n\u00e9anmoins face \u00e0 des difficult\u00e9s, notamment le manque de financement pour des \u00e9quipements de base tels que les outils et le mat\u00e9riel d\u2019arrosage. Gwini \u00e9voque notamment un incendie r\u00e9cent qui s\u2019est d\u00e9clar\u00e9 dans un micro-parc am\u00e9nag\u00e9 par le groupe \u00e0 Kuwadzana et a d\u00e9truit les 32 arbres qui y avaient \u00e9t\u00e9 plant\u00e9s. <em>\u00ab Cela aurait pu \u00eatre \u00e9vit\u00e9 si nous avions eu des d\u00e9broussailleuses pour nettoyer efficacement le terrain et cr\u00e9er des pare-feu \u00bb<\/em>, explique-t-il.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gwini continue n\u00e9anmoins de voir grand<em>. \u00ab Nous esp\u00e9rons nous \u00e9tendre \u00e0 tous les quartiers dens\u00e9ment peupl\u00e9s du Zimbabwe d\u2019ici 2030 \u00bb, <\/em>affirme-t-il. <em>\u00ab Nous esp\u00e9rons \u00e9galement trouver davantage de partenaires afin de nous faciliter la t\u00e2che. \u00bb<\/em><\/p>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-baaca9a6 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"810\" height=\"1080\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_GWINI-.jpg\" alt=\"Tafadzwa Gwini, leader of Green the Ghetto, speaks into a microphone at an outdoor event, with several people standing behind him under trees.\" class=\"wp-image-163419\" style=\"aspect-ratio:4\/3;object-fit:cover\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_GWINI-.jpg 810w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_GWINI--300x400.jpg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_GWINI--311x415.jpg 311w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_GWINI--768x1024.jpg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_GWINI--135x180.jpg 135w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><figcaption class=\"wp-element-caption\">Tafadzwa Gwini, responsable de Green the Ghetto, s\u2019exprime lors d\u2019une activit\u00e9 en plein air. Photo : Green the Ghetto.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1950\" height=\"1462\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Screenshot-2026-03-05-at-11.13.15.png\" alt=\"A barber stands beneath a leafy tree outside a makeshift barbershop, with chairs, water containers and other equipment nearby.\" class=\"wp-image-163424\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Screenshot-2026-03-05-at-11.13.15.png 1950w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Screenshot-2026-03-05-at-11.13.15-534x400.png 534w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Screenshot-2026-03-05-at-11.13.15-554x415.png 554w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Screenshot-2026-03-05-at-11.13.15-768x576.png 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Screenshot-2026-03-05-at-11.13.15-220x165.png 220w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_Screenshot-2026-03-05-at-11.13.15-1536x1152.png 1536w\" sizes=\"auto, (max-width: 1950px) 100vw, 1950px\" \/><figcaption class=\"wp-element-caption\">Un coiffeur se tient sous un arbre plant\u00e9 par Green the Ghetto. Photo : Green the Ghetto.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 id=\"h-etude-de-cas-2-dakar-que-se-passe-t-il-apres-la-plantation\" class=\"wp-block-heading\"><strong><strong>\u00c9tude de cas 2 : Dakar \u2014 Que se passe-t-il apr\u00e8s la plantation ?<\/strong><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Chaude et s\u00e8che, Keur Massar Nord est une commune en pleine expansion situ\u00e9e \u00e0 la p\u00e9riph\u00e9rie nord de Dakar. Elle dispose de tr\u00e8s peu d\u2019arbres et affiche une densit\u00e9 de population impressionnante de 17 058 habitants\/km\u00b2. Elle est \u00e9galement confront\u00e9e aux inondations, \u00e0 la pollution li\u00e9e au trafic routier et \u00e0 la contamination provenant de l\u2019immense d\u00e9charge de Mbeubeuss.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En 2023, le Comit\u00e9 environnemental de la commune a collabor\u00e9 avec le gouvernement central et des associations communautaires locales pour planter des jeunes arbres indig\u00e8nes dans les espaces publics et les \u00e9coles de chacun de ses 105 quartiers. Conscient des difficult\u00e9s li\u00e9es \u00e0 l\u2019entretien de chaque arbre plant\u00e9, le comit\u00e9 a recrut\u00e9 un parrain local dans la maison ou le commerce le plus proche d\u2019un point d\u2019eau afin d\u2019assurer sa protection. Il a \u00e9galement prot\u00e9g\u00e9 les arbres contre le b\u00e9tail, le vandalisme et le vol en les entourant de dispositifs de protection en fer, en grillage et en ciment. Les arbres ont \u00e9t\u00e9 g\u00e9or\u00e9f\u00e9renc\u00e9s \u00e0 l\u2019aide de l\u2019application mobile KoboCollect, tandis que des actions de sensibilisation ont \u00e9t\u00e9 men\u00e9es pour mieux faire conna\u00eetre les b\u00e9n\u00e9fices des arbres et renforcer l\u2019adh\u00e9sion et l\u2019appropriation locales.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette strat\u00e9gie demande beaucoup de main-d\u2019\u0153uvre et de ressources financi\u00e8res, et le nombre d\u2019arbres plant\u00e9s \u00e0 ce jour \u2014 2 137 \u2014 peut sembler modeste. Mais elle s\u2019av\u00e8re plus efficace que de planter de grandes quantit\u00e9s d\u2019arbres qui ne survivent pas : 94 % des arbres ont surv\u00e9cu \u00e0 leur premi\u00e8re ann\u00e9e, soit le taux de survie le plus \u00e9lev\u00e9 document\u00e9 dans l\u2019ouvrage <a href=\"https:\/\/www.iufro.org\/publication\/urban-forests-and-green-spaces-in-africa-case-studies-and-lessons-from-across-the-continent\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Urban Forests and Green Spaces in Africa<\/em><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le projet vise \u00e0 planter 15 000 arbres d\u2019ici la fin de 2027, explique Alioune Badara Gueye, responsable municipal de la planification, des ressources naturelles et du d\u00e9veloppement durable, et \u00e0 les maintenir en vie gr\u00e2ce \u00e0 cette combinaison particuli\u00e8re de personnes, de ressources et de soins.<\/p>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-baaca9a6 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1922\" height=\"2560\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-scaled.jpg\" alt=\"A man stands beside a young tree planted in a sandy urban public space, supported by tyres around its base.\" class=\"wp-image-163344\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-scaled.jpg 1922w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-300x400.jpg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-312x415.jpg 312w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-768x1023.jpg 768w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-135x180.jpg 135w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-1153x1536.jpg 1153w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000250494-1538x2048.jpg 1538w\" sizes=\"auto, (max-width: 1922px) 100vw, 1922px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"960\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341687.jpg\" alt=\"Community members carry young trees and planting tools during a tree-planting activity in an urban neighbourhood.\" class=\"wp-image-163350\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341687.jpg 720w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341687-300x400.jpg 300w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341687-311x415.jpg 311w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341687-135x180.jpg 135w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">\n<figure class=\"wp-block-image alignwide size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"480\" src=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341621.jpg\" alt=\"Children and adults plant young trees in a sandy open space in an urban neighbourhood.\" class=\"wp-image-163355\" srcset=\"https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341621.jpg 720w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341621-566x377.jpg 566w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341621-623x415.jpg 623w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341621-263x176.jpg 263w, https:\/\/www.forestsnews.org\/wp-content\/uploads\/2026\/09\/0515_1000341621-220x147.jpg 220w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><figcaption class=\"wp-element-caption\">De gauche \u00e0 droite : un acajou d\u2019Afrique prosp\u00e8re sur la place centrale, et d\u2019autres arbres se d\u00e9veloppent bien \u00e0 Keur Massar Nord, en p\u00e9riph\u00e9rie de Dakar. Plant\u00e9s sous forme de jeunes arbres d\u00e9j\u00e0 bien d\u00e9velopp\u00e9s et prot\u00e9g\u00e9s par des dispositifs physiques, ils b\u00e9n\u00e9ficient \u00e9galement des soins et de la protection de responsables locaux. Photos : Alioune Badara Gueye.<\/figcaption><\/figure>\n<\/div>\n\n\n\n<h2 id=\"h-des-infrastructures-qui-poussent-d-elles-memes\" class=\"wp-block-heading\"><strong>Des infrastructures qui poussent d\u2019elles-m\u00eames<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Alors que les changements climatiques et la croissance rapide des populations exercent une pression croissante sur les villes africaines, le besoin de projets de reverdissement diversifi\u00e9s, cr\u00e9atifs, techniquement solides et fond\u00e9s sur les connaissances scientifiques ne fera que cro\u00eetre, estime Lelei. <em>\u00ab Les habitants sont confront\u00e9s \u00e0 la hausse des temp\u00e9ratures, \u00e0 la pollution atmosph\u00e9rique, aux inondations, \u00e0 l\u2019\u00e9rosion des sols, \u00e0 la perte de biodiversit\u00e9 et \u00e0 un acc\u00e8s limit\u00e9 aux espaces verts r\u00e9cr\u00e9atifs \u00bb<\/em>, explique-t-il.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsque la voie de liaison de Nairobi a \u00e9t\u00e9 construite, un arboretum d\u2019esp\u00e8ces indig\u00e8nes et une mini-for\u00eat sur les emprises routi\u00e8res, dont certaines atteignent huit m\u00e8tres de profondeur, ne figuraient pas dans les plans. Pourtant, ils constituent d\u00e9j\u00e0 une composante pr\u00e9cieuse du syst\u00e8me routier : ils ralentissent l\u2019\u00e9coulement de l\u2019eau, favorisent la biodiversit\u00e9, fournissent de l\u2019ombre et cr\u00e9ent des espaces s\u00fbrs pour les populations. Le projet rappelle ainsi que les infrastructures urbaines essentielles peuvent aussi \u00eatre plant\u00e9es et cultiv\u00e9es, et pas seulement construites en b\u00e9ton.<\/p>\n\n\n\n<div style=\"height:221px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><em><em>Pour plus d\u2019informations sur ce projet, veuillez contacter Cathy Watson :<\/em> <a href=\"mailto:c.watson@landscapealliance.org\"><em>c.watson@landscapealliance.org<\/em><\/a>.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Pour t\u00e9l\u00e9charger<\/em> Urban Forests and Green Spaces in Africa: Case Studies and Lessons from Across the Continent, <a href=\"https:\/\/www.iufro.org\/publication\/urban-forests-and-green-spaces-in-africa-case-studies-and-lessons-from-across-the-continent\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><em>cliquez ici<\/em><\/a>. <em>Pour plus d\u2019informations sur l\u2019African Forum on Urban Forests, consultez<\/em> <a href=\"https:\/\/afuf.co.za\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><em>ce lien<\/em><\/a><em>.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans les villes africaines, les communaut\u00e9s plantent et entretiennent des arbres le long des routes, dans les quartiers et autour des \u00e9coles. Elles cr\u00e9ent ainsi des espaces publics plus verts, tout en contribuant \u00e0 limiter les inondations, \u00e0 pr\u00e9server la biodiversit\u00e9 et \u00e0 offrir de l\u2019ombre.<\/p>\n","protected":false},"author":264,"featured_media":163363,"comment_status":"closed","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":[12111,12051,12056],"tags":[13591,13691,13594,13692,13690,13694,13695,13592,13693,13689],"language":[2170],"location":[12246,13687,13688],"tag-bahasa":[],"tag-espanol":[],"tag-francais":[],"type-espanol":[],"type-bahasa":[],"type-english":[2432],"type-francais":[],"coauthors":[7144],"class_list":["post-163835","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forests-news-fr","category-gestion-et-restauration-forestiere","category-paysages","tag-african-cities","tag-biodiversite-urbaine","tag-community-led-restoration","tag-foresterie-urbaine","tag-plantation-darbres","tag-restauration-des-paysages-menees-par-les-communautes-locales","tag-reverdissement-urbain","tag-urban-biodiversity","tag-vegetalisation-urbaine","tag-villes-africaines","language-francais","location-africa","location-senegal","location-zimbabwe","type-english-feature"],"acf":[],"yoast_head":"<!-- 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