Dab tsi yog 3 yam ntawm kev tshawb fawb ntawm cov pej xeem?
Dab tsi yog 3 yam ntawm kev tshawb fawb ntawm cov pej xeem?

Video: Dab tsi yog 3 yam ntawm kev tshawb fawb ntawm cov pej xeem?

Video: Dab tsi yog 3 yam ntawm kev tshawb fawb ntawm cov pej xeem?
Video: 6 Nqi Lus Qhia Kev Ua neej ( leej twg mloog lub neej yuav zoo tuaj) 2024, Kaum ib hlis
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Cov kawm ntawm demography yeej muaj peb yam : kev tuag, fertility, thiab tsiv teb tsaws, tab sis tsuas yog thawj ob tau txais kev saib xyuas ntau hauv niaj hnub no kev kawm ntawm lub ntiaj teb thaum ub.

Ntawm no, 3 yam ntawm cov pejxeem loj hlob yog dab tsi?

Qhov loj cov ntsiab lus ntawm kev loj hlob ntawm cov pejxeem yog Birth Rate, Death Rate thiab Migration. Kev yug me nyuam yog tus naj npawb ntawm yug nyob rau ib txhiab tus neeg hauv ib xyoos. Nws yog ib qho loj tiv thaiv kev loj hlob. Kev tuag yog tus naj npawb ntawm cov neeg tuag ib txhiab tus neeg hauv ib xyoos.

Qhov thib ob, qhov muaj pes tsawg leeg ntawm cov pejxeem yog dab tsi? Cov pejxeem muaj pes tsawg leeg yog qhov piav qhia ntawm pej xeem txhais los ntawm cov yam ntxwv xws li hnub nyoog, haiv neeg, poj niam txiv neej los yog txij nkawm. Cov lus piav qhia no tuaj yeem tsim nyog rau kev nkag siab txog kev sib raug zoo ntawm kev tshawb fawb keeb kwm thiab kev sib piv. Cov ntaub ntawv no feem ntau muab piv nrog a pej xeem pyramid.

Ib yam li ib tug yuav nug, qhov kev kawm ntawm cov pejxeem hu ua dab tsi?

Demography - cov kawm ntawm tib neeg cov pejxeem . Demography yog tus kawm ntawm tib neeg cov pejxeem - lawv qhov loj me, muaj pes tsawg leeg thiab kev faib tawm thoob plaws qhov chaw - thiab cov txheej txheem los ntawm qhov ntawd cov pejxeem hloov. Yug, tuag thiab tsiv teb tsaws yog 'peb loj' ntawm cov pej xeem, sib koom ua ke pej xeem stability lossis hloov.

Kev kawm txog cov yam ntxwv ntawm pej xeem yog dab tsi?

Kev tshawb fawb txog kev sau thiab tshuaj xyuas cov lej no yog hu ua pej xeem demographics, tseem hu ua demography. Kev txhais dav dav, demography yog tus kawm ntawm yam ntxwv ntawm cov pejxeem . Nws muab ib tug lej piav qhia txog yuav ua li cas cov yam ntxwv hloov raws sijhawm.

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