Video: Yuav ua li cas ib tug capita tus nqi ntawm cov pejxeem loj hlob muaj feem xyuam rau cov pejxeem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pejxeem kev loj hlob yog ntsuas tus naj npawb ntawm cov neeg hauv a pej xeem (N) dhau sijhawm (t). Per capita txhais tau tias rau tus kheej, thiab cov per capita kev loj hlob tus nqi suav nrog tus lej yug thiab tuag hauv a pej xeem . Lub logistic kev loj hlob equation xav tias K thiab r ua tsis hloov raws sijhawm nyob rau hauv ib pej xeem.
Tom qab ntawd, vim li cas ob qho tib si tag nrho cov pejxeem kev loj hlob thiab qhov kev loj hlob ntawm ib tus neeg tsawg zuj zus raws li qhov loj ntawm cov pejxeem nce?
Thaum lub per capita tus nqi ntawm nce (r) siv tus nqi zoo tib yam tsis hais txog qhov pejxeem loj , ces peb tau exponential kev loj hlob . Thaum lub per capita tus nqi ntawm nce (r) txo raws li cov pejxeem nce mus rau qhov siab tshaj plaws txwv, ces peb tau txais logistic kev loj hlob.
Ib yam li ntawd, yog qhov instantaneous per capita tus nqi ntawm cov pejxeem kev loj hlob? Tab sis ntawm txhua tus nqi zoo ntawm r, tus per capita tus nqi ntawm nce yog tas li, thiab a pej xeem loj hlob exponentially. Nws kev loj hlob yog ib txoj haujlwm ntawm pej xeem loj, nrog cov pej xeem loj hlob sai li N ua loj.
| Taxon | Kab |
|---|---|
| Hom | Ptinus tectus |
| rmax | 0.057 |
| Lub sij hawm tiam (T) | 102 |
Xav txog qhov no, koj ua li cas thiaj nrhiav tau qhov kev loj hlob ntawm ib tus neeg ntawm cov pejxeem?
Qhov tiav qauv rau txhua xyoo per capita kev loj hlob tus nqi yog: ((G / N) * 100) / t, qhov twg t yog pes tsawg xyoo. Nrhiav lub xyoo per capita kev loj hlob tus nqi , as opposed to xwb tus nqi rau tag nrho lub sijhawm, ua kom yooj yim rau kev kwv yees yav tom ntej pej xeem hloov vim nws cuam tshuam rau lub sijhawm thiab tag nrho pej xeem.
Kev nqa peev xwm cuam tshuam li cas rau kev loj hlob ntawm pej xeem?
Kev piav qhia: Lub peev xwm nqa tau yog hais txog tus naj npawb siab tshaj plaws ntawm cov tib neeg ntawm qee hom ib puag ncig tuaj yeem tswj tau nyob rau lub sijhawm ntev. Yog li, yoov tshaj cum cov pejxeem yuav ib ntus nce raws li cov nqa peev rau lawv tso cai rau cov lej siab dua.
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