Lettuce

Tropical climate. low annual rainfall spread over 4 months (December to March). On the plateaus, tropical ferruginous soils, low lateritic soils, waterlogged soils on alluvial soils halomorphic underlying. Vegetations composed of dense forests with moss and lichens (North), dense deciduous forests (West), shrublands or palms, savannah grasslands Hyparrhenia (North), mangroves (coastal western part).

Tropical climate of altitude. 2 distinct seasons (rainy season from November to March, dry season from April to October, Existence of frosts during the dry season from June to August). Humidity decreases from east to west, temperature increases from North to South. ferrallitic yellow / red, red, volcanic soils, ferruginous tropical soils, soil slightly evolved alluvial dapport, waterlogged soils. vegetations made up of dense rainforest (East) of forest scléropylle Uapaca (West) of savoka (East), meadows and steppes of Aristida (West) of grassland Hyparrhenia (West).

Climate transition from warm climate and western semi-arid and South and the tropical climate of the highlands. average temperature 22 ° C. rain average 1.450mm, distribution 150 days. Tanety are dominated by lateritic soil moyennent desaturated, medium fertility. The lowlands are FOMES of waterlogged soils. Vegetations composed of dense rain forests (Southeast), sclerophyllous forests Uapaca (Center), grassy Hyparrhenia savannas (Eastern center), savannahs and steppes of Aristida (Southeast, middle), savannah grasslands Hyparrhenia (West) of bushland or palms (south wester), shrublands (south)

hot and humid tropical climate. large and irregular rain (ranging from 1.700 to 3.500mm / year). 2 distinct seasons (rainy season or vatomandry, hot and humid from December to May, dry season or hosy, cool and dry from June to November). ferrallitic yellow / red and red soil unsophisticated dunes and sandy, organic hydromorphic soils and minerals. vegetations composed of dense forest ombrophie (center west), coastal meadows (iS), savannahs and steppes of Aristida (East), savoka (Center), savannah grasslands Hyparrhenia (Southwest).

Tropical climate of semi-arid, dry season very strong (May to October). Rainfall average 600mm / year, uneven distribution, high concentration of rain from December to March. Average temperature 28 ° C. altitude <100m. Soils formed of recent fluvial material (silt-sandy soils, waterlogged clay limestone soils, heavy baiboho), ferruginous tropical soils with sandy rocks, soils calcimorphic, mangroves and salty soils. vegetations composed of dense deciduous forests (North), sclerophyllous forests Uapaca (Center), bush type xerophilous thickets (West, South), savannah grasslands heteeropogon (South), savannah grasslands Hyparrhenia (Center), shrublands or palm (North), savannas arbusitves (South)