Cov txheej txheem:
- Lub zog npaum li cas yog ntes thawj qhov tsim tawm?
- Dab tsi yog qhov sib npaug rau cov khoom lag luam tseem ceeb?
- Lub ntsiab ntawm lub zog yog dab tsi hauv thawj qhov khoom lag luam?
- Yuav ua li cas yog thawj lub zog?
Video: Rau cov khoom lag luam tseem ceeb ntawm lub zog ntes yog?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Tag nrho cov khoom tsim tawm, lossis GPP, yog tus nqi ntawm lub hnub ci lub zog raug ntes hauv cov piam thaj molecules thaum lub sijhawm photosynthesis-zog ntes ib cheeb tsam ntawm ib chav tsev ib lub sijhawm. … Net thawj cov khoom tsim tau, lossis NPP, yog tag nrho cov khoom lag luam tseem ceeb rho tawm tus nqi ntawm lub zog poob rau cov metabolism thiab kev saib xyuas
Lub zog npaum li cas yog ntes thawj qhov tsim tawm?
Ntawm qhov nruab nrab, cov cog qoob loo tag nrho hauv ntiaj teb yog kwv yees li 5.83 x 10 6 cal m- 2 yr-1 Qhov no yog kwv yees li 0.06% ntawm lub hnub ci zog poob ib square meter nyob rau sab ntug ntawm lub ntiaj teb huab cua ib xyoos twg (txhais tias yog lub hnub ci tas li thiab sib npaug rau 1.05 x 10 10 cal m-2 yr- 1).
Dab tsi yog qhov sib npaug rau cov khoom lag luam tseem ceeb?
Txoj kev tsim khoom tag nrho ntawm lub kaw lus tuaj yeem pom nyob rau hauv ib qho kev sib npaug qhov twg Net Primary Production, lossis NPP, yog sib npaug rau Tag Nrho Cov Tseem Ceeb Ntau Lawm, lossis GPP, rho tawm Kev Ua Phem, lossis R. Cov qauv yogNPP=GPP - R NPP yog tag nrho cov txiaj ntsig ntawm cov nroj tsuag hauv ecosystem.
Lub ntsiab ntawm lub zog yog dab tsi hauv thawj qhov khoom lag luam?
Cov neeg tsim khoom tseem ceeb siv lub zog los ntawm lub hnub los tsim lawv tus kheej cov zaub mov hauv daim ntawv ntawm cov piam thaj, thiab tom qab ntawd cov neeg tsim khoom tseem ceeb tau noj los ntawm cov neeg siv khoom thawj zaug uas tau noj los ntawm cov neeg siv khoom thib ob., thiab lwm yam, kom lub zog ntws los ntawm ib qib trophic, lossis qib ntawm cov saw hlau, mus rau lwm qhov.
Yuav ua li cas yog thawj lub zog?
Pib tsim yog kev tsim cov tshuaj zog hauv cov organic tebchaw los ntawm cov kab mob nyobLub hauv paus tseem ceeb ntawm lub zog no yog lub hnub ci tab sis ib feeb ib feem ntawm cov khoom tsim tawm yog tsav los ntawm cov kab mob lithotrophic siv cov tshuaj lom neeg lub zog ntawm inorganic molecules.
Pom zoo:
Cov khoom lag luam tseem ceeb dab tsi yog muab los ntawm conifers?
Conifers muab tag nrho lub ntiaj teb cov ntoo ntoo, cov ntoo loj ntawm thaj chaw sov, thiab txog 45 feem pua ntawm lub ntiaj teb cov ntoo txhua xyoo. Softwoods yeej ib txwm muaj ntau daim ntawv thov dav dav thiab tshwj xeeb . Cov khoom lag luam tseem ceeb dab tsi yog tsim los ntawm lwm cov gymnosperms?
Puas yog cov khoom lag luam nyiaj txiag nce cov tswv lag luam kev ncaj ncees?
Tsev Nyiaj Txiag yog ib qho kev sib npaug ntawm tus account uas tau sau tseg rau hauv tus tswv cuab qhov sib npaug ntawm daim ntawv tshuav nyiaj. Vim tias cov khoom lag luam nyiaj txiag sawv cev rau tus naj npawb ntawm cov khoom lag luam rov qab los ntawm kev lag luam qhib, nws txo tus tswv lag luam kev ncaj ncees los ntawm tus nqi them rau cov Tshuag .
Vim li cas cov khoom lag luam tseem ceeb hauv khw muag khoom?
Planning Assortment muab koj muaj kev taw qhia meej txog yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau muab txhua lub khw muag khoom muaj txiaj ntsig, uas txhawb nqa lawv muag, haum rau lawv qhov chaw thiab ua haujlwm rau lawv lub zog .
Puas yog cov khoom lag luam newell yog cov khoom lag luam zoo los yuav?
NWL tam sim no ntaus pob ncaws pob Zacks Qib ntawm 2 (Yuav), nrog rau tus nqi qib ntawm A. Cov Tshuag muaj Forward P / E piv ntawm 14.76. Qhov no piv rau nws qhov kev lag luam qhov nruab nrab Forward P / E ntawm 22.55. Tshaj li 52 lub lis piam dhau los, NWL's Forward P/E tau siab li 17.
Vim li cas cov tuam txhab lag luam tseem ceeb rau cov lag luam?
Kev ua lag luam tseem ceeb, vim nws muaj muaj peev xwm txhim kho cov qauv kev ua neej thiab tsim kev nplua nuj, tsis yog rau cov neeg ua lag luam nkaus xwb tab sis kuj rau cov lag luam cuam tshuam. Cov neeg lag luam kuj tseem pab txhawb kev hloov pauv nrog kev tsim kho tshiab, qhov twg cov khoom tshiab thiab txhim kho kom muaj kev lag luam tshiab tsim .
