How to respond effectively to COVID-19? Reports based on environmental changes in Wuhan and Shanghai

Abstract The δ -variant of COVID-19 is blowing to globle economy, hummen’s life and health. The infection rates of δ -variant is twice of the original variants. It is putting the world in a harsher state. Lockdown policy is still powerful in stopping spread of virus. This paper aims to evaluate the lockdown impact on NO 2 , SO 2 , O 3 , PM 2.5 and PM 10 in Wuhan, which reported the first OVID-19 infection case. We analyzed data of the whole periods including before, during and after blokade. Generally, lockdown has significant decreasing effects on all the 5 pollutants except for surface ozone. The reasons for the pollutants’ changes are discussed from the aspects including social policy, people's living habits and Chinese character. To assess the extensive impact of lockdown policy on urban environment, we also studied the same pollutants in Shanghai, which is one of the biggest and central city in China and almost locates at the same latitude with Wuhan. Better results were obtained compared with those of Wuhan with all the pollutants decreasing their concentration and a better air quality. This effects even last after the blockade. This is mainly because Shanghainese have formed more prudent living habits and attach more importance to environmental protection during the lockdown period. Althgough COVID-19 brings bad effect on globle socio-economy and humen’s health, people get chance to rethink the value of life: We should sustainablely develop and pursuing spiritual instead of excessive material enjoyment. It can sustain a healthy living enviroment.