Qhov Tseem Ceeb Qhov txawv - Eutrophication vs Biological Magnification
Tib neeg kev ua ub no tau ua rau muaj kev cuam tshuam ntawm ib puag ncig kev sib npaug uas tau ua rau muaj kuab paug uas cuam tshuam rau ntau theem ntawm biosphere. Cov kev ua ub no muaj xws li tso cov pa roj carbon dioxide ntau dhau, emissions ntawm tsev cog khoom gases, tso tawm cov pa roj xws li sulfur dioxide thiab nitrogen dioxide thiab tso cov dej phwj tuaj thiab cov dej khib nyiab los ntawm ob qho tib si kev lag luam thiab kev siv hauv tsev, thiab lwm yam. Eutrophication thiab biological magnification yog ob qho kev puas tsuaj. ntawm ib puag ncig muaj kuab paug. Biological magnification yog cov txheej txheem uas cov theem ntawm concentration ntawm cov tshuaj lom compound nce thiab accumulates nyob rau hauv ib tug zaub mov saw mus rau qib siab dua thaum eutrophication yog cov txheej txheem los ntawm kev loj hlob ntawm algae tshwm sim vim tso tawm cov as-ham xws li nitrates thiab phosphates rau hauv dej hauv lub cev. qhov ntau dua. Qhov no yog qhov sib txawv tseem ceeb ntawm Eutrophication thiab Biological Magnification.
Eutrophication yog dab tsi?
Eutrophication yog txheej txheem uas tshwm sim vim tso tawm ntau dhau ntawm cov as-ham rau hauv dej. Nutrient enrichment tsim los ntawm kev tso tawm ntau dhau ntawm cov chiv xws li nitrates thiab phosphates, kev lag luam thiab cov dej phwj hauv tsev, cov tshuaj ntxuav tes, thiab lwm yam. Qhov no ua rau kev loj hlob ntawm algae (algal Bloom). Qhov kev loj hlob ntawm algal ntau dhau ua rau muaj teeb meem sib txawv. Txij li thaum cov algae loj hlob ntau dhau lawm, nws thaiv kev nkag mus ntawm lub hnub ci mus rau hauv qab ntawm cov dej hauv qab. Qhov no ua rau kev tuag ntawm cov nroj tsuag sib txawv xws li algae vim tsis muaj hnub ci rau photosynthesis. Kev tuag ntawm cov nroj tsuag ua rau microbial decomposition. Decomposing microorganisms ua rau cov nroj tsuag tuag uas hloov cov organic as-ham rau hauv cov ntaub ntawv inorganic. Decomposing cov nroj tsuag tuag ua rau tso tawm cov khoom sib txawv rau cov dej. Vim muaj kev ua ntawm decomposing microorganisms nyob rau hauv loj, lub BOD (biological oxygen xav tau) qib ntawm cov dej nce.
Daim duab 01: Eutrophication
BOD yog cov pa oxygen hauv cov dej uas xav tau rau kev decomposing microorganisms los hloov cov organic teeb meem rau hauv cov teeb meem inorganic. Vim muaj cov pa oxygen tsis txaus hauv dej thiab muaj cov tshuaj lom, ua rau cov ntses thiab cov ntses tuag. Vim yog qhov tshwm sim no, cov haujlwm ntawm decomposing microorganisms nce ntxiv uas ua rau tsim cov tshuaj lom ntau dua thiab tso tawm cov ntxhiab tsw phem. Lwm cov tsiaj xws li tib neeg uas cuam tshuam nrog eutrophic dej lub cev kuj raug cuam tshuam. Eutrophication tshwm sim los ntawm tib neeg kev ua ub no xws li kev siv ntau dhau ntawm cov chiv uas tso rau hauv dej thiab tso tawm cov khoom pov tseg hauv tsev thiab kev lag luam nrog rau cov dej phwj tuaj thiab cov tshuaj ntxuav tes. Kev sib sau ntawm ntau tshaj nitrates thiab phosphates tam sim no nyob rau hauv pov tseg effluents thiab chiv yog qhov tseem ceeb ua rau eutrophication. Qhov no kuj ua rau txo qis ntawm tus nqi zoo nkauj ntawm lub cev dej.
Yam kev loj hlob yog dab tsi?
Kev nthuav dav lom neeg lom neeg yog txheej txheem los ntawm cov txheej txheem uas cov tshuaj tsis tu ncua khaws cia thiab nce hauv cov ntaub so ntswg ntawm cov kab mob hauv cov qib siab ntawm cov khoom noj sib cais. Kev sib sau thiab nce cov tshuaj lom neeg raws li cov khoom noj khoom haus tuaj yeem tshwm sim vim muaj qhov sib txawv; persistence (tsis muaj peev xwm ntawm cov khoom mus rau catabolized los ntawm cov txheej txheem ib puag ncig sib txawv, lub zog ntawm cov khoom noj khoom haus (progressive increment of concentration of substances when moves along the food chain to high-level) thiab vim tsis muaj peev xwm degradation thiab excretion ntawm cov khoom uas tshwm sim feem ntau yog vim li cas. Qhov loj ntawm cov pa phem uas nthuav tawm thiab ua rau cov xwm txheej no yog POP s (Persistent Organic Pollutants). Lawv yog cov tebchaw uas pheej nyob hauv ib puag ncig thiab ua rau muaj kev phom sij rau tsiaj nrog rau tib neeg vim nws cov khoom sib txuam nrog cov khoom noj. POP feem ntau muaj cov tshuaj xws li DDT; tshuaj tua kab, PCBs (Polychlorinated Biphenyls); ib qho kev lag luam chemical effluent, dioxins, thiab furans; unintentional industrial by-products.
Daim duab 02: Kev Loj Hlob Loj
POPs yog lipophilic uas tsis degrade yooj yim. Txij li thaum cov kab mob tsis muaj yav dhau los raug rau POPs (feem ntau yog cov tshuaj organic tshiab) lawv tsis muaj cov txheej txheem txhawm rau txhawm rau tshem tawm lossis tshem tawm cov tshuaj lom. Cov tebchaw no nkag mus rau hauv cov dej hauv lub cev, ua rau eutrophication thiab nkag mus rau hauv cov khoom noj khoom haus uas thiab txav mus rau theem ua tiav. Cov kab mob nyob rau qib siab tau cuam tshuam ntau dua vim qhov kev nce qib ntawm cov concentration ntawm cov khoom thaum tsiv raws cov khoom noj mus rau qib siab dua.
Dab tsi yog qhov zoo sib xws ntawm Eutrophication thiab Biological Magnification?
Ob txheej txheej tshwm sim vim muaj kuab paug ib puag ncig thiab cuam tshuam rau tsiaj thiab tib neeg tsis zoo
Dab tsi yog qhov txawv ntawm Eutrophication thiab Biological Magnification?
Eutrophication vs Biological Magnification |
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| Eutrophication yog cov txheej txheem uas kev loj hlob ntawm algae tshwm sim vim qhov kev nplua nuj ntawm cov dej hauv lub cev los ntawm nitrates thiab phosphates hauv cov khoom loj uas cuam tshuam rau ntau theem hauv lub cev dej. | Kev nthuav dav lom neeg lom neeg yog txheej txheem uas cov concentration ntawm POPs sib sau ua ke thiab nce hauv cov ntaub so ntswg ntawm cov kab mob hauv cov qib siab ntawm cov khoom noj. |
| Tshuaj muaj pes tsawg leeg | |
| Nitrates, phosphates yog lub luag haujlwm rau eutrophication. | DDT, PCB, dioxins, furans yog lub luag haujlwm rau kev loj hlob lom neeg. |
| Txoj Kev | |
| Algal tawg, tso tawm cov co toxins vim decomposition thiab nce hauv BOD tshwm sim vim eutrophication. | Kev sib sau ntawm cov tshuaj lom nyob rau hauv cov khoom noj khoom haus mus txog qib siab tshaj plaws tshwm sim vim kev nthuav dav lom neeg. |
Summary – Eutrophication vs Biological Magnification
Tib neeg cov dej num ua rau muaj kuab paug rau ib puag ncig. Eutrophication thiab Biological magnification yog ob txheej txheem uas tshwm sim vim muaj kuab paug ib puag ncig. Eutrophication ua rau algal blooms vim qhov kev nplua nuj ntawm cov dej hauv lub cev los ntawm nitrates thiab phosphates hauv cov khoom loj dua uas cuam tshuam rau ntau theem hauv lub cev dej. Biological magnification yog ib txoj kev uas cov concentration ntawm POPs accumulates thiab nce nyob rau hauv cov ntaub so ntswg ntawm cov kab mob nyob rau hauv nyias muaj nyias ib theem siab ntawm cov zaub mov. Qhov no yog qhov sib txawv ntawm eutrophication thiab biological magnification. Ob qho txheej txheem muaj kev cuam tshuam rau tsiaj thiab tib neeg.
Download the PDF Version of Eutrophication vs Biological Magnification
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv Ntawm Eutrophication thiab Biological Magnification
