{"id":1273,"date":"2019-01-09T11:33:12","date_gmt":"2019-01-09T10:33:12","guid":{"rendered":"http:\/\/acager.org\/?p=1273"},"modified":"2019-02-27T22:55:39","modified_gmt":"2019-02-27T21:55:39","slug":"cartographie-libre-pour-aider-la-ville-de-ngaoundere-a-sadapter-aux-changements-climatiques","status":"publish","type":"post","link":"https:\/\/acager.org\/en\/cartographie-libre-pour-aider-la-ville-de-ngaoundere-a-sadapter-aux-changements-climatiques\/","title":{"rendered":"Free mapping to help the city of Ngaound\u00e9r\u00e9 adapt to climate change"},"content":{"rendered":"<div style=\"width: 100%;\">\n<p><iframe loading=\"lazy\" title=\"Open Cities Ngaound\u00e9r\u00e9 : la cartographie libre pour aider \u00e0 s&#039;adapter au changement climatique\" width=\"1080\" height=\"810\" src=\"https:\/\/www.youtube.com\/embed\/binFRCfg71w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<\/div>\n<blockquote>\n<p style=\"text-align: justify;\"><strong>Authors :<\/strong>\u00a0Michel Tchotsoua ; Simon Pierre Petnga Nyamen ; Prosper Innocent Ndjeuto Tchouli ; Arabo Mohamadou ; Issouhou Mouhaman ; Ahmad Barngawi Mohammad ; Gabriel Amougou Amougou et Grace Doherty.<\/p>\n<\/blockquote>\n<p style=\"text-align: justify;\">The city of Ngaoundere faces recurring challenges related to the risks of natural disasters, which increase as its rapid and unplanned urban growth continues. Between 2005 and 2015, the city's population increased from 180,763 to nearly 270,000, and its urban footprint nearly doubled from 3,648 ha to just over 6,381 ha.<\/p>\n<p style=\"text-align: justify;\">Its urbanization has taken place, largely spontaneously, resulting in increasing occupation of many flood-prone wetlands each year, from May to September, and mountain slopes at the risk of rock boulders without prior arrangements. . Given its location in the Sudano-Sahelian environment, the city of Ngaound\u00e9r\u00e9 is also exposed to the extreme effects of climate change.<\/p>\n<p><a href=\"http:\/\/acager.org\/index.php\/2019\/01\/09\/cartographie-libre-pour-aider-la-ville-de-ngaoundere-a-sadapter-aux-changements-climatiques\/carographie-riques\/\"><img loading=\"lazy\" width=\"4608\" height=\"3456\" class=\"img-responsive wp-image-1281\" title=\"Maisons expos\u00e9es aux risques g\u00e9omorphologiques\" src=\"http:\/\/acager.org\/wp-content\/uploads\/2019\/01\/carographie-riques.jpg\" alt=\"maisons exposees\" \/><\/a> <em style=\"font-size: 0.9em;\">Houses exposed to geomorphological risks at Socaret @ ACAGER, Tchotsoua, October 2018<\/em><\/p>\n<p style=\"text-align: justify;\">While a Master Plan d'Urbanisme (PDU) and land-use plans were approved in 2016 to guide its future urbanization, the Ngaound\u00e9r\u00e9 City Council lacks basic tools to effectively guide land use. and maintain the various existing basic infrastructures. The Urban Community of Ngaound\u00e9r\u00e9 (CUN), which does not yet have an operational Geographic Information System (GIS) of the city, is limited to the use of physical maps, most of which are obsolete.<\/p>\n<p style=\"text-align: justify;\">Thus, the challenge is to facilitate access to up-to-date georeferenced information, in particular on basic infrastructure (urban equipment, roads, drainage, land use, etc.), in the form of physical and digital maps, to help better decision making by analyzing this data on the one hand, and helping interactive urban planning and management on the other.<\/p>\n<p style=\"text-align: justify;\">In order to meet these challenges, the Urban Community of Ngaound\u00e9r\u00e9, in partnership with the\u00a0<a href=\"http:\/\/projects.banquemondiale.org\/P156210?lang=fr\">World Bank<\/a>, the\u00a0<a href=\"http:\/\/gfdrr.org\/\">Global Facility for Disaster Resilience and Recovery<\/a>\u00a0(GFDRR), the\u00a0<a href=\"http:\/\/www.minhdu.gov.cm\/\">Ministry of Housing and Urban Development<\/a>\u00a0(MINHDU) by the Inclusive and Resilient Cities Development Project (PDVIR), the\u00a0<a href=\"http:\/\/labogeomatique-un.org\/\">Geomatics Laboratory of the University of Ngaoundere,<\/a>\u00a0civil society organizations and people living in risk areas, have pooled their efforts through the project\u00a0<a href=\"https:\/\/opencitiesproject.org\/ngaoundere\/\">Open Cities Africa \u2013 Ngaound\u00e9r\u00e9<\/a>, to systematically collect data on the exposure and vulnerability of the inhabitants of Ngaound\u00e9r\u00e9 to the risk of natural disasters. The aim is to enable the various stakeholders to better anticipate and prioritize investments to prepare the city to cope with floods, falling rocks, soil erosion and \/ or rockfall.<\/p>\n<p>Organized in three main stages, the collaborative mapping campaign began with the collection of basic data on the city of Ngaoundere. Led by experienced community mappers\u00a0<a href=\"https:\/\/wiki.openstreetmap.org\/wiki\/WikiProject_Cameroon\">OpenStreetMap Cameroon<\/a>, a dozen young mappers consisting of students from the University of Ngaound\u00e9r\u00e9 and trainees from the Urban Community of Ngaound\u00e9r\u00e9 have published more than 20,000 objects (buildings, rivers and streets) under OSM in 2 months.<\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 50%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-1273 gallery-columns-2 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/acager.org\/en\/cartographie-libre-pour-aider-la-ville-de-ngaoundere-a-sadapter-aux-changements-climatiques\/cartographie-participative\/'><img width=\"300\" height=\"225\" src=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/cartographie-participative-300x225.jpg\" class=\"attachment-medium size-medium\" alt=\"cartographie participative\" loading=\"lazy\" aria-describedby=\"gallery-1-1278\" srcset=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/cartographie-participative-300x225.jpg 300w, https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/cartographie-participative.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-1278'>\n\t\t\t\tParticipatory mapping session with residents of the Mardock district. \u00a9 ACAGER, Moutsina, August 2018.\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/acager.org\/en\/cartographie-libre-pour-aider-la-ville-de-ngaoundere-a-sadapter-aux-changements-climatiques\/photo-mappeurs\/'><img width=\"300\" height=\"300\" src=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/photo-mappeurs-300x300.jpg\" class=\"attachment-medium size-medium\" alt=\"photo des mappeurs\" loading=\"lazy\" aria-describedby=\"gallery-1-1277\" srcset=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/photo-mappeurs-300x300.jpg 300w, https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/photo-mappeurs-150x150.jpg 150w, https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/photo-mappeurs.jpg 480w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-1277'>\n\t\t\t\tFamily photo of the Mappers with the trainers of the OpenStreetMap Cameroon Community. \u00a9 ACAGER, Fotsing, October 2018.\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p style=\"text-align: justify;\">During this first phase, the team alternated between digitization, quality control and the validation of data mapped under OSM. In addition, some data collected as part of its previous activities by the &nbsp;<a href=\"http:\/\/acager.org\/en\/\">Association for Cartography and Resource Management<\/a>\u00a0(ACAGER) and those collected in the field by the mappers using the application\u00a0<a href=\"http:\/\/www.qfield.org\/\">QField<\/a>, just over 3,000 point objects, were all loaded on OSM. In addition, using the Java OpenStreetMap tool (JOSM), the main types of land use in the city of Ngaound\u00e9r\u00e9 were mapped offline and uploaded to OSM.<\/p>\n<p style=\"text-align: justify;\">The second step of the collaborative mapping campaign of the urban space of Ngaound\u00e9r\u00e9 consisted in the characterization of the buildings located in the zones at risk of floods and morphological. This work was done using QField integrated survey forms. Ten tablets Samsung Tab A6 were mobilized for this purpose. This collection was conducted in the field by students who were associated with some inhabitants of risk areas.<\/p>\n<p style=\"text-align: justify;\">The third part of the implementation of the Open Cities Initiative in Ngaoundere consisted in the preparation and realization of the drone coverage of four districts located in the flood zone (Gadamabanga, Djalingo, Sabongari 3 and North CIFAN), and the mountains. Ngaound\u00e9r\u00e9 on which are built neighborhoods Onaref, Socaret, Bamyanga and B\u00e9ka Hoss\u00e9r\u00e9.<\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-2 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-2 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 50%;\n\t\t\t}\n\t\t\t#gallery-2 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-2 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-2' class='gallery galleryid-1273 gallery-columns-2 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/acager.org\/en\/marquage-points\/'><img width=\"225\" height=\"300\" src=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/marquage-points-225x300.jpg\" class=\"attachment-medium size-medium\" alt=\"marquage des poitns\" loading=\"lazy\" aria-describedby=\"gallery-2-1280\" srcset=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/marquage-points-225x300.jpg 225w, https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/marquage-points.jpg 480w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-1280'>\n\t\t\t\tMarking ground control points for the preparation of the drone cover. Professor Tchotsoua explains to people the purpose of this marking so that the cross does not sow doubt in the minds. \u00a9 ACAGER, Petnga Nyamen, November 2018.\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/acager.org\/en\/lancement-drone\/'><img width=\"225\" height=\"300\" src=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/lancement-drone-225x300.jpg\" class=\"attachment-medium size-medium\" alt=\"lancement du drone\" loading=\"lazy\" aria-describedby=\"gallery-2-1279\" srcset=\"https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/lancement-drone-225x300.jpg 225w, https:\/\/acager.org\/wp-content\/uploads\/2019\/01\/lancement-drone.jpg 768w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-1279'>\n\t\t\t\tLaunch of the drone to cover areas with natural hazards. SO-GEO has also allowed ACAGER members to learn how to use their equipment. \u00a9 ACAGER, Petnga Nyamen, November 2018.\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p style=\"text-align: justify;\">In the end, <strong>the Open Cities Africa Ngaoundere project<\/strong> will respectively permit :<\/p>\n<ul>\n<li style=\"text-align: justify;\">to produce new, up-to-date, open-access data on the risks of floods, falling rocks, water erosion and bank collapse,<\/li>\n<li style=\"text-align: justify;\">to use new tools \/ products (Atlas) to examine them,<\/li>\n<li style=\"text-align: justify;\">to build the capacity of local people and,<\/li>\n<li style=\"text-align: justify;\">to forge new partnerships between the different stakeholders.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">For more information on the open cities project in Ngaound\u00e9r\u00e9 (Open Cities Ngaound\u00e9r\u00e9), follow our progress on\u00a0<a href=\"https:\/\/opencitiesproject.org\/ngaoundere\">https:\/\/opencitiesproject.org\/ngaoundere<\/a>.<\/p>\n<p style=\"text-align: justify;\"><strong>End note :<\/strong> Open Cities Africa is funded by the Disaster Risk Reduction Financing Program in Africa for ACP-EU cooperation countries founded by the European Union and managed by the Global Facility for Disaster Reduction and Recovery.<\/p>\n<p>\u00a0<a href=\"http:\/\/acager.org\/en\/logo-eu-acp\/\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-1282\" src=\"http:\/\/acager.org\/wp-content\/uploads\/2019\/01\/logo-eu-acp.png\" alt=\"\" width=\"300\" height=\"212\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Auteurs :\u00a0Michel Tchotsoua ; Simon Pierre Petnga Nyamen ; Prosper Innocent Ndjeuto Tchouli ; Arabo Mohamadou ; Issouhou Mouhaman ; Ahmad Barngawi Mohammad ; Gabriel Amougou Amougou et Grace Doherty. La ville de Ngaound\u00e9r\u00e9 fait face \u00e0 des d\u00e9fis r\u00e9currents li\u00e9s aux risques de catastrophes naturelles, qui augmentent au fur et \u00e0 mesure que sa [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/posts\/1273"}],"collection":[{"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/comments?post=1273"}],"version-history":[{"count":11,"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/posts\/1273\/revisions"}],"predecessor-version":[{"id":1381,"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/posts\/1273\/revisions\/1381"}],"wp:attachment":[{"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/media?parent=1273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/categories?post=1273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/acager.org\/en\/wp-json\/wp\/v2\/tags?post=1273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}