I-COVID-19 Lockdown Iholela Ekwehlisweni kwe-PM2.5 Ku-11 Kwayi-12 Emadolobheni Amakhulu WaseChina
Ukuvalwa kwezwe okubangelwe wubhubhane lwe-COVID-19 kubangeleamanani amaloli namabhasi emgwaqeni ayanciphango-77% no-36%, ngokulandelana.Amakhulu amafekthri nawo avalwa isikhathi eside.
Naphezu kokuhlaziywa okubonisa ukwandaPM2.5 amazinga ngoFebhuwari, Lapho bekuyimibikoukuthi phakathi nesikhathi esisuka kuMasingana kuya kuMbasa, amazinga e-PM2.5 ehle ngo-18%.
Kunengqondo ukuthi i-PM 2.5 yehla eChina ngoMashi, kodwa ingabe kunjalo?
Ihlaziye amadolobha amakhulu aseChina ayishumi nambili ukubona ukuthi amazinga awo e-PM2.5 ahamba kanjani ngesikhathi sokuvalwa.
Emadolobhaneni ayi-12 ahlaziywe, wonke abone ukwehla kwamazinga e-PM2.5 ngoMashi no-April, uma kuqhathaniswa nonyaka odlule, ngaphandle kwaseShenzhen.
I-Shenzhen ibone ukunyuka okuncane kumazinga e-PM2.5 ukusuka onyakeni ongaphambili ngo-3%.
Amadolobha abone ukwehliswa okukhulu kumazinga e-PM2.5 kwakuyiBeijing, iShanghai, iTianjin, neWuhan, amazinga e-PM2.5 ehle afika ku-34% eBeijing naseShanghai.
Ukuhlaziywa Kwenyanga Nenyanga
Ukuthola umbono ocacile wokuthi amazinga e-PM2.5 aseChina abelokhu eshintsha kanjani ngesikhathi sokuvalwa kwe-coronavirus, singakwazi ukuhlukanisa idatha ngenyanga.
Mashi 2019 vs. Mashi 2020
NgoMashi, iChina yayisavaliwe kakhulu, namadolobha amaningi avaliwe futhi nokuhamba kunqunyelwe.Amadolobha ayi-11 ehle ngo-PM2.5 ngoMashi.
Idolobha okuwukuphela kwalo elibone ukwenyuka kwamazinga e-PM2.5 ngalesi sikhathi kwakuyi-Xi'an, amazinga e-PM2.5 enyuke ngo-4%.
Ngokwesilinganiso, amazinga e-PM2.5 wamadolobha angu-12 ehle ngo-22%, okushiya i-Xi'an ingumkhiqizi omkhulu.
Ephreli 2020 vs. Ephreli 2019
U-April ubone ukwelula izindlela zokuvala izivalo endaweni emadolobheni amaningi aseChina, lokhu kuhambisana ne-ukwanda kokusetshenziswa kukagesi ngo-April.Idatha ka-April ye-PM2.5 ihambisana nokukhuphuka kokusetshenziswa kukagesi, okubonisa amazinga aphezulu e-PM2.5 futhi kupenda isithombe esihluke ngokuphelele kuMashi.
Amadolobha ayi-6 kwangu-12 ahlaziywe abone ukunyuka kwamazinga e-PM2.5.Uma kuqhathaniswa nokwehliswa okumaphakathi kwamazinga e-PM2.5 (unyaka nonyaka) ngama-22% ngoMashi, u-April kube nokukhuphuka okumaphakathi kumazinga e-PM2.5 angama-2%.
Ngo-Ephreli, amazinga e-PM2.5 ka-Shenyang akhuphuke ngokuphawulekayo esuka kuma-microgram angu-49 ngo-March 2019 aya kuma-micrograms angu-58 ngo-April 2020.
Eqinisweni, u-Ephreli 2020 ube ngu-Ephreli omubi kakhulu kusukela ngo-Ephreli 2015 eShenyang.
Izizathu ezingaba khona zokwenyuka okumangalisayo kwe-Shenyang kumazinga e-PM2.5 kungaba ngenxa ye-ukwanda kwethrafikhi, amaza abandayo kanye nokuqalwa kabusha kwamafekthri.
Imiphumela ye-Coronavirus Lockdown ku-PM2.5
Kuyacaca ukuthi uMashi - ngenkathi imingcele yokuhamba nomsebenzi isekhona eChina - amazinga okungcola ehla uma kuqhathaniswa nonyaka odlule.
Ukuhlaziywa okuhlangene kwamazinga e-China e-PM2.5 ngosuku ekupheleni kuka-March shayela leli phuzu (amachashazi aluhlaza amaningi asho ikhwalithi yomoya engcono).
Kusekude UkuhlanganaIthagethi Yekhwalithi Yomoya ye-WHO
Isilinganiso samaleveli e-PM2.5 emadolobheni angu-12 sehle sisuka ku-42μg/m3 saya ku-36μg/m3 uma siqhathanisa no-2019 kuya ku-2020. Lokho kuyisenzo esimangalisayo.
Nokho, naphezu kwe-Lockdown,Amazinga okungcoliswa komoya eChina abesengaphezulu ngokuphindwe izikhathi ezi-3.6 kunomkhawulo wonyaka we-World Health Organization ongu-10μg/m3.
Alikho nelilodwa lamadolobha ayi-12 ahlaziywe elalingaphansi komkhawulo wonyaka we-WHO.
Ngezansi: Amazinga e-PM2.5 aseChina Ngesikhathi Sokuvalwa Kwe-COVID-19
Isilinganiso samazinga e-PM2.5 emadolobheni amakhulu angu-12 ase-China sehle ngo-12%, ngoMashi-April, uma kuqhathaniswa nonyaka odlule.
Kodwa-ke, amazinga e-PM2.5 ayesesesilinganisweni esiphindwe izikhathi ezi-3.6 kunomkhawulo wonyaka we-WHO.
Ngaphezu kwalokho, ukuhlaziywa kwenyanga nenyanga kukhombisa ukukhuphuka kabusha kumazinga e-PM2.5 ngo-Ephreli 2020.
Isikhathi sokuthumela: Jun-12-2020
