Zadzai fomu riri pazasi uye tichakutumirai email yePDF yeRiverside Soils Are the Local Storage of Nitrate Pollution.
Vaongorori vekuNagoya University muJapan vanoti nitrates dzinoungana muvhu pedyo nenzizi dzinoita basa guru mukuwedzera huwandu hwenitrate mumvura yerwizi panguva yemvura. Zvakawanikwa zvavo, zvakaburitswa mujenari reBiogeoscience, zvinogona kubatsira kuderedza kusvibiswa kwenitrogen uye kuvandudza kunaka kwemvura munzvimbo dziri pedyo nerwizi dzakadai semadziva nemvura dziri pamhenderekedzo yegungwa.
MaNitrates chinhu chakakosha pamiti ne phytoplankton, asi huwandu hwakawanda hwemaNitrates munzizi hunogona kuderedza kunaka kwemvura, zvichikonzera eutrophication (kuwedzerwa kwemvura nezvinovaka muviri zvakanyanya), uye zvinogona kuisa njodzi kuhutano hwemhuka nevanhu. Kunyangwe huwandu hwenitrates munzizi huchizivikanwa kuti hunokwira kana mvura yanaya, hazvizivikanwe kuti sei.
Kune dzidziso mbiri huru pamusoro pekuti nitrate inowedzera sei kana mvura yanaya. Sekureva kwedzidziso yekutanga, nitrate dzemumhepo dzinonyungudika mumvura yemvura dzopinda zvakananga munzizi. Dzidziso yechipiri ndeyekuti kana mvura yanaya, nitrate dzemuvhu dziri munzvimbo yakaganhurana nerwizi, dzinozivikanwa senzvimbo yerwizi, dzinopinda mumvura yerwizi.
Kuti vaongorore zvakanyanya kwakabva nitrates, chikwata chekutsvagisa chakatungamirwa naProfessor Urumu Tsunogai weGraduate School of Environmental Studies, pamwe chete neAsian Center for Air Pollution Research, vakaita ongororo yekuongorora shanduko mukugadzirwa kwenitrogen ne oxygen isotopes muma nitrates uye panguva yekunaya kwemvura yakawanda. Kuwedzera kwehuwandu hwe nitrates munzizi.
Ongororo dzakapfuura dzakaratidza kuwedzera kukuru kwehuwandu hwenitrate panguva yemadutu murwizi rwuri kumusoro kweRwizi rweKaji muNiigata Prefecture kuchamhembe kwakadziva kumadokero kweJapan. Vaongorori vakaunganidza sampuro dzemvura kubva kunzvimbo yeKajigawa, kusanganisira kubva munzizi dziri kumusoro kwerwizi. Munguva yemadutu matatu, vakashandisa maautosampler kuenzanisa nzizi dzemvura awa yega yega kwemaawa makumi maviri nemana.
Chikwata chakayera huwandu hwenitrates mumvura yerwizi, ndokuzoenzanisa zvabuda nehuwandu hwenitrates dziri muvhu munzvimbo yegungwa yerwizi. Nekuda kweizvozvo, vakaona kuti nitrates zhinji dzinobva muvhu kwete mumvura inonaya.
"Takagumisa kuti kusukwa kwenitrates dzemuvhu dzemumahombekombe munzizi nekuda kwekuwedzera kwehuwandu hwenzizi nemvura yepasi ndiyo yakanyanya kukonzera kuwedzera kwenitrates munzizi panguva yemadutu," akadaro Dr. Weitian Ding weNagoya University, munyori weongororo iyi.
Chikwata chevaongorori chakaongororawo mhedzisiro yenitrate yemumhepo pakuwedzera kwenitrate panguva yemadutu. Huremu hwenitrate yemumhepo mumvura yerwizi hahuna kuchinja, kunyangwe mvura yakawedzera, izvo zvinoratidza kuti pane kukanganiswa kudiki kwenzvimbo dzenitrate dzemumhepo.
Vaongorori vakaonawo kuti nitrate dzemuvhu dzemumahombekombe dzinogadzirwa netupukanana twemuvhu. "Zvinotendwa kuti nitrate dzetupukanana dzinowanikwa muvhu remumahombekombe chete muzhizha nemumatsutso muJapan," vanotsanangura kudaro Purofesa Tsunogai. "Kubva pamaonero aya, tinogona kufanotaura kuti kuwedzera kwenitrate murwizi nekuda kwemvura kuchaitika chete mumwaka uno."
Reference: Dean W, Tsunogai W, Nakagawa F, nevamwe. Kutevera kwakabva nitrates munzizi dzesango kwakaratidza kuwanda kwakanyanya panguva dzezviitiko zvemadutu. Biogeoscience. 2022;19(13):3247-3261. doi: 10.5194/bg-19-3247-2022
Nyaya iyi yakatorwa kubva muzvinyorwa zvinotevera. Cherechedza. Zvinyorwa zvinogona kunge zvakagadziriswa zvichienderana nehurefu uye zviri mukati. Kuti uwane rumwe ruzivo, ona kwakanyorwa.