Zadza fomu riri pazasi uye tichakutumira email yePDF version yeRiverside Soils Ndiyo Yakakosha Kunobva Nitrate Pollution.
Nitrates inoungana muvhu pedyo nenzizi inoita basa rinokosha mukuwedzera mazinga e nitrate mumvura yerwizi panguva yekunaya kwemvura, vatsvakurudzi veNagoya University muJapan vanoshuma.Zvavakawana, zvakaburitswa mupepanhau reBiogeoscience, zvinogona kubatsira kuderedza kusvibiswa kwenitrogen uye kuvandudza kunaka kwemvura munzvimbo dzepasi pemvura dzakaita semadziva nemvura yemumahombekombe.
Nitrates chinhu chakakosha chemiti yemiti uye phytoplankton, asi huwandu hwenitrate munzizi hunogona kukanganisa kunaka kwemvura, zvichiita kuti eutrophication (kuwedzerwa-kuwedzerwa kwemvura ine zvinovaka muviri), uye kuisa njodzi kumhuka uye hutano hwevanhu.Kunyangwe mazinga e nitrate muhova achizivikanwa nekukwira kana kuchinaya, hazvisi pachena kuti nei.
Pane dzidziso mbiri huru dzekuti nitrate inowedzera sei kana kuchinaya.Maererano nedzidziso yekutanga, atmospheric nitrates inonyungudika mumvura inonaya uye inopinda zvakananga muhova.Tsananguro yechipiri ndeyokuti kana kuchinaya, ivhu renitrate munzvimbo yakatarisana nerwizi, inozivikanwa seriparian zone, inopinda mumvura yerwizi.
Kuenderera mberi nekuongorora kwakabva nitrate, boka rekutsvagisa rinotungamirwa naProfessor Urumu Tsunogai weGraduate School of Environmental Studies, vachibatsirana neAsia Center for Air Pollution Research, vakaita chidzidzo chekuongorora shanduko mukuumbwa kwenitrogen uye oksijeni isotopes mu. nitrate uye panguva yekunaya kukuru.Kuwedzera kuwanda kwenitrate munzizi.
Zvidzidzo zvakapfuura zvakashuma kuwedzera kukuru kwehuwandu hwenitrate panguva yemadutu murwizi kumusoro kweRwizi rweKaji muNiigata Prefecture kuchamhembe kwakadziva kumadokero kweJapan.Vatsvakurudzi vakaunganidza sampuli dzemvura kubva munzvimbo yeKajigawa, kusanganisira kubva kuhova dziri kumusoro kwerwizi.Munguva yemadutu matatu, vakashandisa autosamplers kuenzanisa hova dzemvura awa yega kwemaawa makumi maviri nemana.
Chikwata chakayera kusungirirwa uye isotopic kuumbwa kwenitrate mumvura yerukova, uye ndokuenzanisa mhedzisiro neconcentration uye isotopic kuumbwa kwenitrate muvhu munzvimbo yemahombekombe erukova.Somugumisiro, vakawana kuti manitrate mazhinji anobva muvhu kwete mumvura inonaya.
"Takagumisa kuti kushambidzwa kwevhu regungwa nitrate muhova nekuda kwekukwira kwehova uye mvura yepasi ndiyo chikonzero chikuru chekuwedzera kwenitrate muhova panguva yemadutu," akadaro Dr. Weitian Ding weNagoya University, munyori wekudzidza.
Chikwata chekutsvagisa chakaongororawo maitiro eatmospheric nitrate pakuwedzera kwenitrate flux panguva yemadutu.Izvo zviri mukati meatmospheric nitrates mumvura yerwizi zvakaramba zvisina kuchinjwa, pasinei nekuwedzera kwekunaya, izvo zvinoratidza simba shoma rezvinyorwa zveatmospheric nitrate.
Vatsvakurudzi vakawanawo kuti ivhu remahombekombe nitrate rinogadzirwa nehutachiona hwevhu.“Zvinofungidzirwa kuti manitrates eutachiona huduku hunoungana muivhu remumhenderekedzo yegungwa chete muzhizha nomumatsutso muJapan,” anotsanangura kudaro Purofesa Tsunogai."Nemaonero aya, tinogona kufanotaura kuti kuwedzera kwenitrate murwizi nekuda kwekunaya kwemvura kuchaitika chete mumwaka uno."
Reference: Dean W, Tsunogai W, Nakagawa F, et al.Kutsvaga kwainobva nitrates muhova dzesango kwakaratidza kukwirisa kwakanyanya panguva yezviitiko zvedutu.Biogeoscience.2022;19(13):3247-3261.doi: 10.5194/bg-19-3247-2022
Chinyorwa ichi chakatsikiswa kubva pane zvinotevera.Cherechedza.Zvinyorwa zvinogona kunge zvakagadziridzwa kureba uye zviri mukati.Kuti uwane rumwe ruzivo, ona iyo yakanyorwa kwakanyorwa.