Qee lub sij hawm nruab nrab ntawm 11, 000 thiab 5, 000 xyoo dhau los, tom qab lub hnub nyoog dej khov kawg tas lawm, Sahara Desert hloov pauv.
Sahara ua ntej suab puam yog dab tsi?
Ib qho kev vam meej tshaj plaws uas tau nyob hauv suab puam yog kiffian kev vam meej. Kiffians nyob hauv cov suab puam qee qhov 10,000 xyoo dhau los thaum lub sijhawm uas cov suab puam tab tom mus rau theem ntub dej. suav tias yog Hnub Nyoog Hnub Nyoog kev vam meej, Kiffian seem tau pom nyob rau xyoo 2000 ntawm qhov chaw hu ua Gobero, uas nyob hauv Niger.
Vim li cas cov suab puam Sahara nyob?
Tab sis ntawm 8,000 txog 4,500 xyoo dhau los, muaj ib yam dab tsi txawv txawv: Kev hloov pauv ntawm av mus rau qhuav tau tshwm sim sai dua hauv qee thaj chaw ntau dua li tau piav qhia los ntawm orbital precession ib leeg, ua rau cov suab puam Sahara raws li peb paub niaj hnub no.
Puas yog Sahara loj hlob?
Desertification yog ib qho teeb meem loj zuj zus ntxiv vim kev hloov pauv huab cua hloov pauv huab cua, ua rau tib neeg cuam tshuam nrog cov mob hyperarid. Cov suab puam Sahara tsis muaj qhov tshwj xeeb, tsis tu ncua loj hlob thoob 11 lub tebchaws thiab sai sai los npog ntau dua.
Sahara puas ntsuab dua?
Qhov kev hloov ntawm hnub ci hluav taws xob tau maj mam, tab sis cov toj roob hauv pes hloov tam sim ntawd. … Tom ntej no Northern Hemisphere lub caij ntuj sov insolation siab tshaj plaws - thaum Green Sahara tuaj yeem rov tshwm sim - tau npaj yuav tshwm sim dua kwv yees 10,000 xyoo txij li tam sim no hauv AD 12000 lossis AD 13000.
