1. WEEK4 TOPIC :NIGERIAN VEGETATION, FOREST AND FOREST USES
NIGERIA VEGETATION
Nigeria is a large country with varying vegetation belts. The variations are found from North to South with the belts running from East to West. Climatic factors such as rainfall, temperature, and relative humidity account for these variations, other factors include topography and human activities on land. The type of agricultural activities to be engaged in a particular area depends on the environment.
NIGERIAN VEGETATION BELTS
There are two major types of vegetation in Nigeria. These are the ;
Forest zones
Savanna zones
FOREST ZONES : The forest vegetation is found in the southern part of the country and comprises of : a. Mangrove forest
b. Rain forest
MANGROVE FOREST: It is found around swamps of the coastal creeks, estuaries and lagoons of southern Nigeria
- Trees found are : red and white mangroves ,palm and lianas (climbing and twining plant)
- Animals found are: fish, crocodiles, snakes and birds.

3. B. RAIN FOREST: This area is characterized with rainfall of about 1500mm-2000mm within 8-9 months of rainfall
- Found around Ogun ,Oyo , Ondo, Delta, Anambra, Akwa Ibom
Trees found in this area are oil palm ,iroko, mahogamy, rubber, walnut,obeche.
Animals found in this area are, monkeys, antelopes, wart-hogs, snails,grasscutters e.t.c t
SAVANNA ZONES: This covers as much as 80% of the country from the northern edge of the rain forest to the southern edge of the Sahara desert. The savanna zone is subdivided into : a. Derived savanna
b. Guinea savanna
c. Sudan savanna
d. Sahel savanna
(A) DERIVED SAVANNA : In this zone, farming activities have combined to degrade the original forest vegetation, leaving behind some fire-tolerant savanna species and a few forest trees. Animals found in the derived savanna include antelopes, giant rats, monkey e.t.c
(B) GUINEA SAVANNA : This is the largest vegetation belt in Nigeria: It covers the sparsely populated areas of the middle belts. This region is characterized by natural grassland, sparse woodland or trees. This region is dominated by tubers and grain crops. Animals found here include large animals like buffaloes, elephant, lions kept in game reserve, while smaller animals like giant rats , rabbits and wild cats etc. move about freely.

4. © SUDAN SAVANNA: This area is characterized by:
sparsely distributed short trees, with short and seasonal grass cover
Rainfall last only 2-3 months and relative humidity is low.
Long and more severe dry season or period than the guinea savanna
Feathery grasses and give a continuous land cover
Common plant found is baobab and shea butter
Animals found are similar to those of the guinea savanna but fewer in number due to lack of food(pasture)
(D) SAHEL SAVANNA: This is the most northern vegetation zone, found in the Eastern corners of Kano and Borno states. It is characterized with:
Barely 500mm of rainfall annually with about 9-10 months of dry season.
Very sparse vegetation ,with sparse thorny trees
plants found varying from low growing shrubs in some part ,trees varieties include raphia palm acacia and the major crops are millet and sorghum,while vegetables and sugar cane are grown along the river bed
Note: irrigation is widely practised in this area due to the inadequate water supply.
ASSIGNMENT
State the two major vegetation zones in Nigeria
Mention the savanna sub zones
List 5 common animals and plants found in the rain forest zones.