Cov txheej txheem:
Video: Qhov qub kev loj hlob hav zoov txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Laus - hav zoov loj hlob yog ntuj hav zoov uas tau tsim nyob rau lub sijhawm ntev, feem ntau tsawg kawg yog 120 xyoo (DNR txhais thiab ua raws li cov lus txhais rau sab hnub tuaj Tebchaws Meskas), tsis muaj kev cuam tshuam loj heev, kev hloov chaw hloov chaw - hluav taws kub, cua daj cua dub, lossis kev nkag.
Ib yam li ntawd, ib tug yuav nug, dab tsi yog qhov qub kev loj hlob hav zoov zoo li?
Hom yam ntxwv ntawm laus - hav zoov loj hlob suav nrog muaj nyob ntawm cov ntoo laus , cov cim qhia tsawg kawg ntawm tib neeg kev cuam tshuam, kev sib xyaw-hnub nyoog sawv ntsug, muaj qhov qhib qhov qhib vim ntoo ntog, qhov av-thiab-mound topography, ntoo hauv ntau theem ntawm kev lwj, sawv snags (tuag ntoo ), multilayered canopies, cov av tsis zoo, muaj kev noj qab haus huv
Ib yam li ntawd, muaj pes tsawg lub hav zoov loj hlob lawm? Raws li ib qho kev kwv yees, sawv ntawm ib puas xyoo- qub hav zoov tam sim no tus account tsuas yog 7% ntawm hav zoov npog hauv Tebchaws Meskas (USDA-FS 2000). Txij xyoo 1600, 90% ntawm cov nkauj xwb hav zoov uas ib zaug npog ntau ntawm 48 lub xeev qis tau raug tshem tawm.
Kuj tseem yuav paub, dab tsi yog qhov qub hav zoov loj hlob thiab vim li cas cov hav zoov no muaj kev pheej hmoo?
Kev tswj hluav taws. Cov hav zoov qub hauv tus reserves teem nyob rau hauv tus Northwest Hav zoov Npaj ntsej muag ob hom pheej hmoo : Sudden poob los ntawm qhov hluav taws kub hnyav, thiab qeeb qeeb ntawm ecology- complexity los ntawm kev tua hluav taws kub, uas yog qhov tseem ceeb hauv tus kev loj hlob ntawm qhuav hom laus loj hlob.
Cov hav zoov loj hlob nyob qhov twg?
Tshawb nrhiav 5 ntawm Teb Chaws Asmeskas Qub-Growth Forests
- Tongass National Forest, Alaska.
- Chattahoochee National Forest, South Carolina thiab Georgia.
- Heart's Content Recreation Area, Allegheny National Forest, Pennsylvania.
- Adirondack State Park, New York.
- Jedediah Redwoods State Park, California.
Pom zoo:
Dab tsi yog qhov biotic thiab abiotic yam ntawm cov hav zoov hav zoov sov?
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Kev nyab xeeb cuam tshuam li cas rau cov hav zoov hav zoov sov?
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Cov nroj tsuag zoo li cas hauv hav zoov hav zoov hav zoov?
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Dab tsi yog qhov txawv ntawm hav zoov boreal thiab hav zoov temperate?
Temperate/Boreal Forest Av. Borealforests yog cov hav zoov ntsuab uas nyob deb mus rau sab qaum teb, thiab hloov mus rau hauv tundras. Kuj tseem muaj hav zoov hav zoov hav zoov, uas yog sib xyaw ntawm cov nroj tsuag coniferous thiab deciduous. Temperate forests yog feem ntau deciduous
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