Ib txoj kev tshawb fawb tshiab qhia tau hais tias cov pa phem los ntawm tib neeg kev ua ub ua no cuam tshuam rau lawv lub peev xwm nrhiav paj
Raws li txoj kev tsis khoom, cov seem ntawm lub tsheb tso rau hauv cov huab cua, ntawm lawv cov nitrogen oxides thiab ozone. Cov pa phem no, uas tseem tso tawm los ntawm ntau qhov chaw tsim khoom thiab cov chaw tsim hluav taws xob, ntab hauv huab cua rau ntau teev rau xyoo. Cov kws tshawb fawb tau paub ntev tias cov tshuaj no ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv. Tab sis tam sim no, ib lub cev loj hlob ntawm cov pov thawj qhia tias tib cov kuab paug no kuj ua rau lub neej nyuaj rau cov kab pollinators thiab cov nroj tsuag uas cia siab rau lawv.
Ntau hom huab cua muaj kuab paug tawm tsam nrog cov tshuaj uas ua rau lub paj tus ntxhiab, hloov cov nyiaj thiab cov ntsiab lus ntawm cov tebchaw nyob rau hauv ib txoj kev uas impedes ib tug pollinator lub peev xwm los nrhiav paj. Ntxiv nrog rau kev nrhiav pom cues xws li paj lub duab los yog xim, kab nyob ntawm tus ntxhiab "daim ntawv qhia," kev sib xyaw ntawm cov ntxhiab molecules tshwj xeeb rau txhua hom paj, nrhiav lawv cov nroj tsuag xav tau. Hauv av-theem ozone thiab nitrogen oxides hnov mob nrog cov ntxhiab tsw ntxhiab molecules, tsim cov tshuaj tshiab uas ua haujlwm txawv.
Ben Langford, tus kws tshawb fawb txog huab cua ntawm UK Center for Ecology thiab Hydrology uas tshawb fawb txog qhov teeb meem no tau hais tias "Nws yog qhov hloov pauv tus ntxhiab tsw uas cov kab tab tom nrhiav."
Pollinators kawm koom nrog ib qho kev sib xyaw tshwj xeeb ntawm cov tshuaj uas cov paj tso tawm nrog cov hom tshwj xeeb thiab nws cov nqi zog qab zib. Thaum cov khoom tawg yooj yim no nkag mus rau hauv kev sib cuag nrog cov pa phem heev, cov tshuaj tiv thaiv hloov cov naj npawb ntawm cov ntxhiab tsw ntxhiab molecules nrog rau cov txheeb ze ntawm txhua hom molecule, hloov tus ntxhiab tsw.
Cov kws tshawb fawb paub tias ozone tawm tsam ib hom carbon daim ntawv cog lus pom nyob rau hauv cov ntxhiab tsw ntxhiab molecules. Ntawm qhov tod tes, nitrogen oxides yog me ntsis ntawm enigma, thiab nws tseem tsis tau meej meej npaum li cas floral ntxhiab molecules chemically reacts nrog hom tshuaj no. James Ryalls, tus kws tshawb fawb ntawm University of Reading tau hais tias "Daim ntawv qhia tsw ntxhiab no tseem ceeb heev rau cov pollinators, tshwj xeeb tshaj yog cov ya pollinators," said James Ryalls. "Muaj qee cov bumblebees, piv txwv li, uas tuaj yeem pom lub paj tsuas yog thaum lawv nyob deb tshaj li ib meter deb ntawm lub paj, yog li ntxhiab tsw tseem ceeb heev rau lawv rau kev noj zaub mov."
Langford thiab lwm tus tswvcuab ntawm nws pab pawg tau npaj kom nkag siab tias ozone hloov pauv cov duab ntawm lub paj tus ntxhiab plume li cas. Lawv siv lub qhov cua thiab cov sensors los ntsuas cov qauv ntawm cov huab cua ntxhiab uas paj tsim thaum lawv tawm lawv cov ntxhiab tsw qab. Cov kws tshawb fawb tom qab ntawd tso tawm ozone ntawm ob qhov ntau, ib qho zoo ib yam li UK tau ntsib thaum lub caij ntuj sov thaum ozone qib siab dua, mus rau hauv qhov av nrog cov ntxhiab tsw ntxhiab molecules. Lawv pom tias ozone noj tam sim ntawm cov npoo ntawm plume, ua kom qhov dav thiab ntev.
Cov kws tshawb fawb tau coj kom zoo dua ntawm honeybee reflex hu ua proboscis extension. Ntau yam zoo li Pavlov tus dev, uas yuav salivate ntawm lub suab nrov noj hmo, honeybees yuav ntev ib feem ntawm lawv lub qhov ncauj uas ua raws li lub raj pub mis, hu ua proboscis, teb rau cov ntxhiab tsw lawv koom nrog cov nqi zog qab zib. Thaum cov kws tshawb fawb nthuav tawm cov muv no nrog cov ntxhiab tsw lawv ib txwm hnov txog rau meters ntawm lub paj, lawv daig tawm lawv cov proboscis 52 feem pua ntawm lub sijhawm. Qhov no txo qis mus rau 38 feem pua ntawm lub sijhawm rau cov ntxhiab tsw uas sawv cev rau qhov tsw qab 12 meters ntawm lub paj.
Txawm li cas los xij, thaum lawv siv tib qho kev hloov pauv rau cov ntxhiab tsw uas yuav tshwm sim hauv cov plume degraded los ntawm ozone, cov muv tsuas teb 32 feem pua ntawm lub sij hawm ntawm 6-meter cim thiab 10 feem pua ntawm lub sij hawm ntawm 12-meter cim. Langford tau hais tias "Koj pom cov kev poob qis heev ntawm cov muv uas tuaj yeem paub qhov tsw," Langford tau hais.
Ntau qhov kev tshawb fawb ntawm cov ncauj lus no tau ua tiav hauv qhov chaw kuaj mob, tsis yog nyob hauv thaj teb lossis ib qho chaw nyob hauv ntuj. Txhawm rau hais txog qhov kev paub dhau los no, cov kws tshawb fawb hauv University of Reading tau teeb tsa cov twj uas thawb ozone lossis diesel tso rau hauv ntu ntawm cov nplej. Cov kev sim tau teeb tsa hauv 26-ko taw qhib cua rings pab cov kws tshawb fawb soj ntsuam qhov cuam tshuam ntawm huab cua phem rau ntau hom pollinators.
Ib pab neeg tshawb fawb tau saib xyuas cov nroj tsuag mustard hauv thaj av rau kev mus ntsib pollinator. Qee chav tsev muaj cov pa hluav taws xob tso rau hauv cov qib qis dua EPA cov qauv huab cua zoo. Hauv cov chaw no, muaj txog li 90 feem pua txo cov kab 'muaj peev xwm los nrhiav cov paj uas lawv tso siab rau zaub mov. Tsis tas li ntawd, cov nroj tsuag mustard siv nyob rau hauv txoj kev tshawb no, txawm hais tias nws tus kheej-pollinating paj, muaj txog li 31 feem pua txo qis hauv qee qhov kev ntsuas ntawm kev loj hlob ntawm cov noob zoo li, tej zaum yuav tshwm sim los ntawm kev txo qis pollination los ntawm huab cua paug.
Cov kev tshawb pom no qhia tias cov kab pollinators lawv tus kheej ntsib cov teeb meem tshwj xeeb vim yog cov pa phem tam sim no. Tab sis thaum ua hauj lwm hauv kev hais kwv txhiaj nrog lwm cov kev cov nyom uas ntsib cov kab no, cov pa phem yuav tsim teeb meem hauv
Peb tuaj yeem muab cov sensors los ntsuas cov roj ntau ntau
Post lub sij hawm: Aug-08-2024