Savana
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    Savana Savana Presentation Transcript

    •  
      • Savana - forma ţiune ierboasă cu specii vegetale xerofile care ajung la câţiva metri;unde ploile sunt frecvente sunt prezenţi arbori: baobabi,accacii,palmieri in Africa,eucalipt in Australia
      • Răspândire:5-15 grade lat.N si S
      • -America de Sud:Brazilia-campo-cerrado si caatinga(tufişuri spinoase xerofite)şi Venezuela-lianos;
      • -Australia-scrub
      • -Africa intertropicala
      • -in lungul râurilor mari apar păduri galerii
      • animale:ierbivore :antilope gnu,impala,zebre ,girafe (Africa),elefanţi,rinoceri(Asia,Africa)carnivore:lei,leoparzi,gheparzi,hiene,şacali(Africa),păsări: struţ-Africa, nandu-Am.de sud,emu in Australia
      • Factorii geoecologici:
      • -Climat cu 2 sezoane,ploios si secetos,temperaturi 20-28 grade,precipitaţii500-1000mm anual,soluri roşii de savană relativ fertile
      • Au loc frecvent incendii (de brusă)datorita temperaturilor ridicate,dar vegetaţia se reface rapid
    • Harta zonelor biopedoclimatice
    • Sol rosu de savana
    • baobabul Africa
    • termite
    • Campos cerrados-Brazilia
    • Animale in savana africana
    • Animale din savanele sud americane
    • Animale carnivore
    • Animale din savana Australiei Ciinele dingo
      • Bibliografie
      • I nternet
      • M anual geografie ed.Humanitas şi
      • Niculescu