Dab tsi ua rau biodiversity hotspot?
Dab tsi ua rau biodiversity hotspot?

Video: Dab tsi ua rau biodiversity hotspot?

Video: Dab tsi ua rau biodiversity hotspot?
Video: Ua Dab Tsi Txhaum Koj - David Yang (New Song 2021) 2024, Kaum ib hlis
Anonim

A biodiversity hotspot yog ib cheeb tsam biogeographic uas yog ob qho tib si tseem ceeb reservoir biodiversity thiab raug hem nrog kev puas tsuaj. Lub sij hawm biodiversity hotspot tshwj xeeb yog hais txog 25 thaj chaw nplua nuj nyob hauv ntiaj teb uas tau ploj yam tsawg kawg 70 feem pua ntawm lawv qhov qub chaw nyob.

Hais txog qhov no, dab tsi yog cov txheej txheem rau kev txiav txim siab txog biodiversity hotspot?

Txhawm rau tsim nyog raws li biodiversity hotspot ntawm Myers 2000 ib tsab ntawm hotspot-daim ntawv qhia, cheeb tsam yuav tsum ua tau raws li ob txoj cai nruj: nws yuav tsum muaj tsawg kawg yog 0.5% lossis 1,500 hom nroj tsuag vascular raws li cov kab mob endemics, thiab nws yuav tsum tau poob tsawg kawg 70% ntawm nws thawj cov nroj tsuag. Thoob plaws ntiaj teb, 36 thaj chaw tsim nyog raws li cov ntsiab lus no.

Tsis tas li ntawd, muaj pes tsawg biodiversity hotspots muaj? IUCN npaj 'Red Data Book'. Nyob ntawd yog 34 thaj chaw thoob ntiaj teb uas tsim nyog raws li Biodiversity hotspots . Cov no hotspots sawv cev tsuas yog 2.3% ntawm tag nrho lub ntiaj teb thaj av. Cov no hotspots tseem ceeb vim Biodiversity underpins tag nrho lub neej nyob rau hauv lub ntiaj teb no.

Yog li ntawd, dab tsi ua rau biodiversity hotspots?

Biodiversity hotspots Tam sim no npog tsuas yog 1.4% ntawm thaj av hauv ntiaj teb, thaum lawv pib npog 12% ntawm thaj av [10]. Cov xwm txheej, xws li kev ua qias tuaj, kev siv av, kab mob invasive, deforestation, thiab kev hloov huab cua yog qhov ua rau ua rau ntawm vaj tse poob thiab kev puas tsuaj [11].

Cov piv txwv ntawm biodiversity hotspots yog dab tsi?

Piv txwv ntawm biodiversity hotspots yog hav zoov hav zoov raws li lawv niaj hnub ntsib kev puas tsuaj thiab degradation vim kev txiav txim siab tsis raug cai, muaj kuab paug thiab ua hav zoov. Raws li Myers 2000 tsab ntawm lub hotspot -map, ib cheeb tsam tsuas yog tsim nyog raws li a biodiversity hotspot yog nws ntsib ob yam.

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