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Volume 40 Issue 6
Dec.  2021
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PAN Tianwang,SHI Wenqiang,LIANG Jianping,et al.Influencing factors of the air environment in the Reed Flute Cave under the background of COVID-19 in Guilin[J].Carsologica Sinica,2021,40(06):1006-1013. doi: 10.11932/karst20210610
Citation: PAN Tianwang,SHI Wenqiang,LIANG Jianping,et al.Influencing factors of the air environment in the Reed Flute Cave under the background of COVID-19 in Guilin[J].Carsologica Sinica,2021,40(06):1006-1013. doi: 10.11932/karst20210610

Influencing factors of the air environment in the Reed Flute Cave under the background of COVID-19 in Guilin

doi: 10.11932/karst20210610
Funds:

 DD20190672

  • Received Date: 2021-04-30
  • Publish Date: 2021-12-25
  • When natural caves develop into tourist caves, the energy and material input into caves by human activities will affect the environment. The objective of this study is to explore the characteristics of cave air environment and its influencing factors of the Reed Flute Cave, and the impact of tourism activities on the cave environment and cave self-purification capacity under the background of COVID-19. From September 1 to October 8,2020, the cave temperature, humidity, CO2 and the number of tourists were selected as key parameters to observe the changes of key elements of the cave environment and their relationships. The results show as follows, (1) The number of tourists during the observation period significantly reduced compared with that of that in the same period previous years. The impact of tourist activities on temperature and humidity of tourist caves was not obvious. The curve changes of temperature and humidity inside the cave, mainly affected by the change of air environment outside, tend to be consistent with those curve changes outside the cave; (2) CO2 concentration in the cave still changes regularly with the increase of tourists during peak hours. After tourism activities, CO2 concentration in the cave can quickly return to the background value of the cave environment, and no obvious CO2 accumulation is observed; (3) The Reed Flute Cave shows its self-purification capacity. During the observation period, the decrease of temperature outside the cave due to the rainfall and cooling weather makes the ventilation mode change, thus strengthening air exchange between the inside and outside of the cave. The airflow exchange improves the self-purification capacity of the cave environment.

     

  • PAN Tianwang,SHI Wenqiang,LIANG Jianping,et al.Influencing factors of the air environment in the Reed Flute Cave under the background of COVID-19 in Guilin[J].Carsologica Sinica,2021,40(06):1006-1013.
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