Puas dej hiav txwv muaj npp siab?

Cov txheej txheem:

Puas dej hiav txwv muaj npp siab?
Puas dej hiav txwv muaj npp siab?

Video: Puas dej hiav txwv muaj npp siab?

Video: Puas dej hiav txwv muaj npp siab?
Video: sab ntuj no los nag xauv npo npauj kub xyooj nkauj tawm tshiab 2024, Hlis ntuj nqeg
Anonim

Cov tswv yim yooj yim - NPP hauv marine ecosystems Marine ecosystems feem ntau muaj cov khoom lag luam qis. Lub nto ntawm dej hiav txwv tau txais lub teeb txaus rau qhov siab ntawm photosynthesis (tsuas yog 5% ntawm qhov teeb meem tshwm sim) thiab cov yaj CO 2qib feem ntau tsis txwv.

NPP ntawm dej hiav txwv yog dab tsi?

"Net thawj tsim" (NPP) yog GPP rho tawm autotrophs tus kheej tus nqi ua pa; Nws yog li no tus nqi uas tag nrho cov metabolism ntawm phytoplankton tsim biomass. … "Net ecosystem production" (NEP) yog GPP rho tawm ua pa los ntawm txhua yam kab mob hauv ecosystem.

Vim li cas dej hiav txwv thiaj muaj NPP qis?

NPP nruab nrab ntawm dej hiav txwv qis heev vim dej hiav txwv ntim (feem ntau qhib qhov chaw) piv rau cov neeg tsim khoom loj heev.

Puas yog NPP ntawm lub hiav txwv qhib siab?

Marine NPP ranges ntawm 50 - 1200 g C m-2 y-1, qis tshaj plaws hauv dej hiav txwv qhib, siab tshaj plaws hauv thaj chaw ntug dej hiav txwv • NPP ntawm hav zoov hav zoov thaj tsam li ntawm 400-800 g C m-2 y-1, thaum cov suab puam nruab nrab yog 80 g C m-2 y-1. "Thaum koj nruab nrab tus nqi tsim khoom thoob plaws ntiaj teb, dej hiav txwv ('s NPP) yog kwv yees sib npaug rau thaj av. "

NPP siab tshaj qhov twg?

Cov khoom lag luam siab tshaj plaws hauv thaj av ib puag ncig tshwm sim hauv swamps thiab marshes thiab tropical rainforests; qhov qis tshaj tshwm sim hauv cov suab puam.

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