**Acknowledgements**

*Tourism*

**Figure 7.**

**72**

**Figure 8.**

their countries and further set upset those on tourist spots, which can efficiently operate with renewable energy sources, ultimately it will also reduce air pollution in the future. Similarly, after once pandemic crises will over, it is also highly recommended that, for local and international tourists, the authorities should arrange those vehicles for traveling purposes which consume renewable energy sources.

*Coal consumption by five generating plants in China. Source: Centre for Research on Energy and Clean Air.*

*Change in NO2 emission due to lockdown in Europe. Source: Centre for Research on Energy and Clean Air.*

This chapter aims to discuss the association between Covid-19's outbreak and the tourism sector. The debate indicates that Covid-19 indicates an adverse effect on tourism activities. Due to the lockdown, thousands of people lost their jobs. Many airlines, restaurants, bars, and hotels are nearly to become bankrupt. On the other hand, our discussion reveals that global lockdown creates a positive impact on environmental sustainability. Also, air and water pollution have been reduced

Further, we predict that in upcoming years, due to the restoration of environmental beauty, the global tourism industry will boom. However, the age of booming may not be very long. Because, once the world engine starts after Covid-19, air and water pollution will occupy the space of greeneries. It is the right time to formulate

significantly, which creates a positive impact on fauna and flora.

**3. Conclusion and recommendations**

This work supported by the China Postdoctoral Science Foundation (No. 2019 M660700), the Beijing Key Laboratory of Megaregions Sustainable Development Modeling, Capital University of Economics and Business (No. MCR2019QN09).
