Vim li cas NPP tseem ceeb?
Vim li cas NPP tseem ceeb?

Video: Vim li cas NPP tseem ceeb?

Video: Vim li cas NPP tseem ceeb?
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Net thawj cov khoom tsim tawm ( NPP ) yog cov pa roj carbon ntau thiab lub zog uas nkag mus rau hauv ecosystems. Nws muab lub zog uas tsav tag nrho cov txheej txheem biotic, suav nrog cov trophic webs uas txhawb nqa cov tsiaj txhu thiab kev ua haujlwm ntawm cov kab mob decomposer uas rov siv cov khoom noj uas xav tau los txhawb kev tsim khoom thawj zaug.

Ib yam li ntawd, tib neeg nug, vim li cas GPP thiab NPP tseem ceeb?

NPP = GPP - ua pa. NPP yog ib tseem ceeb ib feem ntawm cov peev txheej carbon thoob ntiaj teb thiab tau siv los ua qhov ntsuas ntawm kev ua haujlwm hauv ecosystem. NPP tuaj yeem ntsuas ncaj qha los ntawm kev ntsuas cov yam ntxwv ntawm tsob ntoo lossis sau cov khoom cog hauv av, tab sis hla cov cheeb tsam loj uas nyob deb deb pom cov duab tuaj yeem siv los kwv yees NPP.

Qhov thib ob, vim li cas NPP tseem ceeb rau tib neeg? Tus nqi ntawm NPP tsim nyog los ntawm tib neeg yog qhov tseem ceeb vim NPP ntws yog txwv (ib zaug tsim nyog nws tsis tuaj yeem siv dua) thiab yuav tsum txhawb nqa tag nrho lub neej heterotrophic.

Ua ke, dab tsi yog thawj qhov tsim khoom tsim tau thiab yog vim li cas nws thiaj tseem ceeb?

Net Primary Productivity . Nroj tsuag ntes thiab khaws lub hnub ci zog los ntawm photosynthesis. Thaum lub sij hawm photosynthesis, cov nroj tsuag muaj sia hloov cov pa roj carbon dioxide hauv huab cua mus rau hauv cov piam thaj molecules lawv siv rau zaub mov. Hauv cov txheej txheem ntawm kev ua lawv tus kheej cov zaub mov, cov nroj tsuag kuj muab cov pa oxygen uas peb xav tau ua pa.

Dab tsi ua rau NPP?

Muaj ntau txoj kev tshawb fawb tshuaj xyuas qhov cuam tshuam yam ntawm NPP , xws li nag lossis daus, kub thiab huab cua cov pa roj carbon dioxide ntau ntxiv (Melton li al. 2013). Qee cov kws tshawb fawb txiav txim siab tias av noo yog qhov tseem ceeb ntawm kev tswj hwm NPP piv nrog dej nag txhua xyoo (Raich li al. 1991).

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