relisation of a umt on douala: feasability and prospects by rodrigue aimé feumba, fotsing, kandé...

RELISATION OF A UMT ON DOUALA: FEASABILITY AND PROSPECTS

By Rodrigue Aimé Feumba, Fotsing, Kandé

PLAN1- Brief presentation of DOUALA2- presentation of the evolution of the town3- UMT or geographical units in Douala ( attributes and associated fonctions)4- Realisation of a transect5- indicatif agenda for the task and expected results

Main features of Douala - a coastal town , built at the Wouri estuary (24 Km to the Atlantic Ocean) in low land (0=100m); high temperatures ( above 25 °C,) abondant rainfall ( 4000 mm from march to November…)- High frequence of floods and wind storms-post colonial town exist before 1884 (German protectorat in Cameroon) = the oldest town of the country- 2,5 millions inhabitants (BUCREP, 2010, CUD, 2011) With a 5% growth rate per year 5 millions in 2025 -surface area: 300 km2 -The economical Capital of the country with the biggest port industries

BRIEF EVOLUTION OF THE TOWN

Années Population Superficie

(Ha)

Densités de

population/ha

1955 115 000 1098 105

1961 155 000 1336 115

1965 200 000 1534 130

1970 320 000 1992 160

1980 750 000 4800 208

1990 1 500 000 9456 212

2000 2 000 000 17 850 2242010 2 500 000 30 000

• Tab. 24 -Projection de la population de Douala à l’horizon 2025 (en 1000)

• 1964 1976 1987 2005 2010 2015 2020 2025• Hypothèse tendancielle 229 458 810 1 907 2 370 2 888 3 458 4 074• Hypothèse haute 229 458 810 1 907 2 419 3 069 3 893 4 937• Hypothèse basse 229 458 810 1 907 2 364 2 798 3 233 3 659• Hypothèse tendancielle 5,94% 5,31% 4,87% 4,43% 4,03% 3,67%

3,34%• Hypothèse haute 5,94% 5,31% 4,87% 4,87% 4,87% 4,87% 4,87%• Hypothèse basse 5,94% 5,31% 4,87% 4,38% 3,63% 3,12% 2,67%

Evolution of the population and projections

Evolution spatiale de Douala de 1964 à 1974

Fig. 8 – Etapes d'urbanisation et zones d'habitat spontané

élargissement à l’horizon 2025

3- UMT or geographical units in Douala ( attributes and associated fonctions)

- Port area ( 1000 ha)- Industrial areas- Administratif zone- Planned residentials areas- Unplanned, informal or sponteneous residential areas ( 35%)- markets, - Other Publics places (stadia…)- Mangroves- Forest ( relics or surrounding)- Cultivated parcels ( to provide food and incomes…)- Green spaces/parks ( put in place and preserve by the local governance autirity)- Transports infrastructures: roads, rail ways, bridges ( 1 km)- River Wouri, scanty water- Sand ( plages)- Poubelles sauvages ( tas d’ordures)

1-Port areaAttribute: 1000 ha; 500 exploited. Estuary Port;Fonction: 95% of importations of Cameroon and the central africa

Port de Douala: situation Projet de développement)

2- industrial areas: near the port in the old town and in Bonabéri ( rigth site of Wouri)

- Attributes: grouped in 2-3 zones- Fonction: 70 % des industries

Unit attributes fonction

Habitat structuré

Habitat spontannée

Voies routières et ferroviairesInstallations portuaires et industrielles

Zone administrative

Espace vert:Sauvage ( mangrove, jacinthe…

Espace vert planté et entrtenu

Zone d’agriculture intra urbaine.

Zone commerciales (marcés)

Principaux points de blocage sur le réseau primaire et pôles économiques

MODELE NUMERIQUE DE TERRAIN

Land use map in Douala

• Transects et delais